{"id":41465,"date":"2023-12-10T13:13:07","date_gmt":"2023-07-27T20:29:30","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e6%9c%89%e5%85%b3%e4%bb%8eoracle%e8%bf%81%e7%a7%bb%e5%88%b0postgresql%e7%9a%84%e9%97%ae%e9%a2%98\/"},"modified":"2024-05-04T12:56:41","modified_gmt":"2024-05-04T04:56:41","slug":"%e6%9c%89%e5%85%b3%e4%bb%8eoracle%e8%bf%81%e7%a7%bb%e5%88%b0postgresql%e7%9a%84%e9%97%ae%e9%a2%98","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e6%9c%89%e5%85%b3%e4%bb%8eoracle%e8%bf%81%e7%a7%bb%e5%88%b0postgresql%e7%9a%84%e9%97%ae%e9%a2%98\/","title":{"rendered":"\u6709\u5173\u4eceOracle\u8fc1\u79fb\u5230PostgreSQL\u7684\u95ee\u9898"},"content":{"rendered":"<h1>\u9996\u5148<\/h1>\n<p>\u8fd9\u662f2019\u5e74PostgreSQL Advent Calendar\u7684\u7b2c\u516b\u5929\u7684\u6587\u7ae0\u3002<br \/>\n\u8fd9\u7bc7\u6587\u7ae0\u662f\u6211\u81ea\u5df1\u5728\u4eceOracle\u8fc1\u79fb\u5230PostgreSQL\u8fc7\u7a0b\u4e2d\u6240\u8c03\u67e5\u7684\u5185\u5bb9\u3002<\/p>\n<p>\u53bb\u5e74\u5f00\u59cb\u51c6\u5907\u4e86\u670d\u52a1\u5668\u66ff\u6362\u5de5\u4f5c\uff08\u4eceWindows Server 2008R2 + Oracle 11g \u5230 Windows Server 2016 + PostgreSQL 9.6\uff09\uff0c\u4ece\u4eca\u5e749\u6708\u5f00\u59cb\u9010\u6b65\u5c55\u5f00\u3002<br \/>\n\u6700\u521d\u8003\u8651\u7684\u662f\u4f7f\u7528 Oracle 12c\uff0c\u4f46\u95ee\u9898\u4e3b\u8981\u51fa\u5728\u8bb8\u53ef\u8d39\u7528\u4e0a\uff082016\u5e74\u53d1\u751f\u4e86 Oracle Database \u8bb8\u53ef\u8d39\u7684\u5927\u5e45\u6539\u52a8\uff09\u3002\u7531\u4e8e\u6211\u4eec\u670925\u4e2a\u5730\u70b9\uff0c\u6210\u672c\u975e\u5e38\u9ad8\u6602\u3002\u56e0\u6b64\u4e3a\u4e86\u964d\u4f4e\u6210\u672c\uff0c\u6211\u4eec\u51b3\u5b9a\u8f6c\u5411\u4f7f\u7528PostgreSQL\u3002<\/p>\n<p>\u4e0d\u4f7f\u7528EDB Postgres\uff08\u4e0eOracle\u517c\u5bb9\u7684\u9ad8\u7248\u672cPostgreSQL\uff09\uff0c\u800c\u662f\u4ed4\u7ec6\u7b5b\u9009\u4e86\u5927\u7ea620\u4e2a\u73b0\u6709\u5e94\u7528\u7a0b\u5e8f\u7684SQL\uff0c\u5e76\u4eceOracle\u8fc1\u79fb\u81f3PostgreSQL\u3002<\/p>\n<h1>PostgreSQL\u7684\u6982\u8ff0<\/h1>\n<p>\u8fd9\u4e2a\u8bcd\u7684\u53d1\u97f3\u662f\u201cPostgres QL\u201d\u3002\u5b83\u662fIngres\u7684\u4e0b\u4e00\u7248\u672c(Post)\u5e76\u88ab\u547d\u540d\u4e3aPostgres\u3002QL\u662fQuery Language\u7684\u7f29\u5199\u3002<\/p>\n<p>PostgreSQL\u91c7\u7528\u4e86\u8ffd\u52a0\u578b\u67b6\u6784\u3002\u5373\u4f7f\u6570\u636e\u6709\u53d8\u5316\uff0c\u4e5f\u4e0d\u4f1a\u76f4\u63a5\u7269\u7406\u5220\u9664\u539f\u59cb\u8bb0\u5f55\uff0c\u800c\u662f\u6dfb\u52a0\u65b0\u884c\u5e76\u5c06\u539f\u59cb\u8bb0\u5f55\u6807\u8bb0\u4e3a\u65e0\u6548\u3002\u8981\u5c06\u672a\u4f7f\u7528\u7684\u7a7a\u95f4\u91cd\u65b0\u5229\u7528\uff0c\u9700\u8981\u4f7f\u7528VACUUM\u547d\u4ee4\u3002<\/p>\n<p>\u5c06\u6765\uff0cEnterpriseDB\u5e0c\u671b\u653e\u5f03\u589e\u91cf\u5f0f\u67b6\u6784\uff0c\u5e76\u5b9e\u65bd\u50cf\u5176\u4ed6\u6570\u636e\u5e93\u4e00\u6837\u62e5\u6709UNDO\u65e5\u5fd7\u7684\u5f00\u53d1\u4e2d\u7684\u201czHeap\u201d\u6280\u672f\u3002\u4f5c\u4e3a\u4e00\u4e2a\u6570\u636e\u5e93\uff0c\u4f5c\u4e3a\u4e00\u4e2a\u5f00\u653e\u6e90\u4ee3\u7801\u9879\u76ee\uff0c\u4f5c\u4e3a\u4e00\u4e2a\u793e\u533a &#8211; \u77f3\u4e95\u9054\u592b\u5148\u751f\u8c08\u5230\u4e86PostgreSQL\u7684\u4f18\u52bf\u548c\u6311\u6218\u3002<\/p>\n<p>\u30102021\/08\/03\u8865\u5145\u3011\u6839\u636e\u201czheap\u7684\u73b0\u72b6\u201d\uff0c\u7531\u4e8ezheap\u7684\u4e3b\u8981\u5f00\u53d1\u8005Amit\u79bb\u5f00\u4e86EDB\uff0c\u53ef\u60dc\u5730\uff0c\u201czheap\u201d\u76ee\u524d\u9677\u5165\u505c\u6ede\u3002<\/p>\n<h2>\u652f\u6301\u7ed3\u675f\u65e5\u671f (EOL = \u7ed3\u675f\u751f\u547d\u5468\u671f)<\/h2>\n<div>\n<div class=\"post-table\">\u30d0\u30fc\u30b8\u30e7\u30f3\u521d\u671f\u30ea\u30ea\u30fc\u30b9\u65e5\u30b5\u30dd\u30fc\u30c8\u7d42\u4e86\u671f\u9650152022\u5e7410\u670813\u65e52027\u5e7411\u670811\u65e5142021\u5e7409\u670830\u65e52026\u5e7411\u670812\u65e5132020\u5e7409\u670824\u65e52025\u5e7411\u670813\u65e5122019\u5e7410\u670803\u65e52024\u5e7411\u670814\u65e5112018\u5e7410\u670818\u65e52023\u5e7411\u670809\u65e5102017\u5e7410\u670805\u65e52022\u5e7411\u670810\u65e59.62016\u5e7409\u670829\u65e52021\u5e7411\u670811\u65e5<\/div>\n<\/div>\n<p>\u30102021\/06\/25\u9644\u6ce8\u3011<br \/>\n\u7531\u4e8e PostgreSQL 9.6 \u7684\u652f\u6301\u671f\u9650\u5373\u5c06\u5230\u671f\uff0c\u6211\u4eec\u8ba1\u5212\u5c06\u5176\u5347\u7ea7\u5230\u67d0N\u516c\u53f8\u6700\u65b0\u652f\u6301\u7684 PostgreSQL 12\u3002<br \/>\n\u30102021\/08\/02\u9644\u6ce8\u3011<br \/>\n\u5df2\u64b0\u5199\u4e00\u7bc7\u5173\u4e8e\u5347\u7ea7\u5230 PostgreSQL 12 \u7684\u6587\u7ae0\u3002<\/p>\n<p>&nbsp;<\/p>\n<h2>\u66f4\u6539\u540d\u79f0<\/h2>\n<p>\u30102021\/08\/02\u66f4\u65b0\u3011<br \/>\n\u5728PostgreSQL 10\u4e2d\uff0c\u6709\u4e00\u4e9b\u76ee\u5f55\u540d\u79f0\u548c\u51fd\u6570\u540d\u79f0\u7b49\u53d1\u751f\u4e86\u66f4\u6539\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30ed\u30b0\u30d5\u30a1\u30a4\u30eb\u51fa\u529b\u5148\u306e\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u540d\u304cpg_log\u304b\u3089log\u3078\u5909\u66f4<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">WAL\u306b\u95a2\u9023\u3059\u308b\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\uff0f\u95a2\u6570\uff0f\u30b3\u30de\u30f3\u30c9\u306a\u3069\u3067xlog\u304cwal\u3001location\u304clsn\u306b\u5909\u66f4<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u30b3\u30df\u30c3\u30c8\u30ed\u30b0\u306e\u51fa\u529b\u5148\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u540d\u304cpg_clog\u304b\u3089pg_xact\u3078\u5909\u66f4<\/ul>\n<div>\n<div class=\"post-table\">PostgreSQL 9.6\u4ee5\u524d\u306e\u540d\u79f0PostgreSQL 10\u4ee5\u964d\u306e\u540d\u79f0pg_loglogpg_xlogpg_walpg_clogpg_xactpg_current_xlog_locationpg_current_wal_lsnpg_xlogdumppg_waldumppg_receivexlogpg_receivewal<\/div>\n<\/div>\n<h1>\u73af\u5883<\/h1>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Windows Server 2016<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">PostgreSQL 9.6<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">.NET\u30e9\u30a4\u30d6\u30e9\u30ea\u300cNpgsql\u300d<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">psqlodbc ODBC\u30c9\u30e9\u30a4\u30d0\u30fc(UNICODE\u7248)<\/ul>\n<p>\u7531\u4e8e\u5728\u51c6\u5907\u5f00\u59cb\u65f6\uff0cPostgreSQL 9.6\u662f\u5728\u8fd8\u672a\u53d1\u5e03PostgreSQL 10.0\u4e4b\u524d\u7684\u7248\u672c\u3002<br \/>\n\u73b0\u5728\u5df2\u7ecf\u53d1\u5e03\u4e86 PostgreSQL 12\uff082019\/10\/3\uff09\u548c PostgreSQL 13\uff082020\/09\/24\uff09\u3002<\/p>\n<p>\u8fde\u63a5\u9a71\u52a8\u7a0b\u5e8f\u5df2\u66f4\u6539\u4e3a.NET\u7684\u5e94\u7528\u7a0b\u5e8f\u4f7f\u7528&#8221;Npgsql&#8221;\uff0c\u800cClassic ASP\u5e94\u7528\u7a0b\u5e8f\uff0832\u4f4d\uff09\u4f7f\u7528psqlodbc\uff08Unicode\u7248\u672c\uff09\u3002<\/p>\n<p>\u5728\u7ba1\u7406\u5de5\u5177\u7684&#8221;ODBC\u6570\u636e\u6e90\u7ba1\u7406\u5458(32\u4f4d)&#8221;\u4e2d\u6ce8\u518c\u5e76\u4f7f\u7528&#8221;PostgreSQL35W PostgreSQL Unicode&#8221;\u4f5c\u4e3a\u7cfb\u7edfDNS\u3002<br \/>\n\u7531\u4e8ePostgreSQL OLDDB\u9a71\u52a8\u7a0b\u5e8f\u6162\u4e14\u65e0\u6cd5\u6b63\u786e\u83b7\u53d6PostgreSQL\u7684numeric\u7c7b\u578b\u5b57\u6bb5\u503c\u7b49\u95ee\u9898\uff0c\u56e0\u6b64\u4f7f\u7528ODBC\u9a71\u52a8\u7a0b\u5e8f\u3002<br \/>\n\u4e0d\u5efa\u8bae\u4f7f\u7528PostgreSQL\u7684OLEDB\u8fde\u63a5\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">Session<\/span><span class=\"p\">(<\/span><span class=\"s\">\"ConnectionString\"<\/span><span class=\"p\">)<\/span> <span class=\"o\">=<\/span> <span class=\"s\">\"DSN=PostgreSQL35W;Server=localhost;Database=db_test;UID=fuga;PWD=hoge;Port=5432;\"<\/span>\r\n<\/code><\/pre>\n<h2>\u5efa\u7acb<\/h2>\n<h3>\u4ed6\u9700\u8981\u5bf9\u4e3b\u673a\u8fdb\u884c\u8bbe\u7f6e\u66f4\u6539\u4ee5\u8fdb\u884c\u8fde\u63a5\u3002<\/h3>\n<pre class=\"post-pre\"><code><span class=\"n\">listen_addresses<\/span> = <span class=\"s1\">'*'<\/span>\t\t<span class=\"c\"># what IP address(es) to listen on;\r\n<\/span><span class=\"n\">port<\/span> = <span class=\"m\">5432<\/span>\t\t\t<span class=\"c\"># (change requires restart)\r\n<\/span><\/code><\/pre>\n<p>\u203b\u66f4\u6539\u540e\uff0c\u91cd\u65b0\u542f\u52a8PostgreSQL\u670d\u52a1\u3002<\/p>\n<p>\u53d6\u6d88\u8bc4\u8bba\u3002\u5c06&#8221;localhost&#8221;\u66f4\u6539\u4e3a&#8221;*&#8221;\u3002\u5982\u679c\u4e0d\u8fd9\u6837\u505a\uff0c\u53ea\u80fd\u8fde\u63a5\u5230\u672c\u5730\u4e3b\u673a\u3002<br \/>\n\u4e3a\u4e86\u4ece\u5176\u4ed6\u4e3b\u673a\u8fde\u63a5\uff0c\u9700\u8981\u8fdb\u884c\u4ee5\u4e0b\u8bbe\u7f6e\u3002<\/p>\n<h3>\u8bbe\u5b9a\u53ef\u4ee5\u8fde\u63a5\u7684\u5ba2\u6237\u7aef<\/h3>\n<p>\u5728pg_hda.conf\u4e2d\u6dfb\u52a0\u914d\u7f6e\u3002<\/p>\n<p>\u5141\u8bb8\u6765\u81ea\u6240\u6709\u5ba2\u6237\u7aef\u7535\u8111\u7684\u8fde\u63a5\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"c\"># IPv4 local connections:\r\n<\/span><span class=\"n\">host<\/span> <span class=\"n\">all<\/span> <span class=\"n\">all<\/span> <span class=\"m\">0<\/span>.<span class=\"m\">0<\/span>.<span class=\"m\">0<\/span>.<span class=\"m\">0<\/span>\/<span class=\"m\">0<\/span> <span class=\"n\">md5<\/span>\r\n<\/code><\/pre>\n<p>\u9650\u5236\u4f86\u81ea\u5ba2\u6236\u7aef\u8a08\u7b97\u6a5f\u7684\u9023\u63a5\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"c\"># IPv4 local connections:\r\n<\/span><span class=\"n\">host<\/span> <span class=\"n\">all<\/span> <span class=\"n\">all<\/span> <span class=\"m\">192<\/span>.<span class=\"m\">168<\/span>.<span class=\"m\">64<\/span>.<span class=\"m\">0<\/span>\/<span class=\"m\">24<\/span> <span class=\"n\">md5<\/span>\r\n<\/code><\/pre>\n<p>\u203b\u8a8d\u8a3c\u65b9\u5f0f trust: \u53ef\u4ee5\u4f7f\u7528\u4efb\u610f\u89d2\u8272\u540d\u65e0\u9700\u5bc6\u7801\u8fde\u63a5\uff0cmd5: \u4f7f\u7528\u5bc6\u7801\u8ba4\u8bc1<br \/>\n\u203b\u66f4\u6539\u540e\uff0c\u4e0d\u9700\u8981\u91cd\u65b0\u542f\u52a8PostgreSQL\u670d\u52a1<\/p>\n<h3>\u5730\u5340<\/h3>\n<p>lc_collate\u548clc_ctype\u7684\u9ed8\u8ba4\u8bbe\u7f6e\u662f\u201cC\u201d\uff0c\u800clc_messages\u3001lc_monetary\u3001lc_numeric\u548clc_time\u5c06\u5728\u6b64\u6b21\u8fd0\u884c\u4e2d\u7edf\u4e00\u8bbe\u5b9a\u4e3a\u201cC\u201d\u3002<br \/>\n* \u4e0d\u5229\u7684\u4e00\u9762\u662f\uff0c\u8f93\u51fa\u5230pg_log\u7684\u65e5\u5fd7\u6d88\u606f\u5c06\u4e0d\u4f1a\u662f\u65e5\u8bed\uff0c\u800c\u662f\u82f1\u8bed\u3002<\/p>\n<h3>\u6309\u7167\u76f8\u540c\u7684\u987a\u5e8f\u5bf9\u7167\u7247\u8fdb\u884c\u5339\u914d\u3002<\/h3>\n<p>\u5982\u679c\u4e0d\u8bbe\u7f6e\u6392\u5e8f\u987a\u5e8f\uff0c\u5f88\u5bb9\u6613\u88ab\u5ffd\u89c6\uff0c\u522b\u4eba\u4f1a\u8bf4\u6392\u5e8f\u4e0d\u5bf9\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"o\">{<\/span>A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,\uff21,\uff22,\uff23,\uff24,\uff25,\uff26,\uff27,\uff28,\uff29,\uff2a,\uff2b,\uff2c,\uff2d,\uff2e,\uff2f,\uff30,\uff31,\uff32,\uff33,\uff34,\uff35,\uff36,\uff37,\uff38,\uff39,\uff3a<span class=\"o\">}<\/span>\r\n \r\n\u6587\u5b57\u30b3\u30fc\u30c9\u9806\r\n\u306f\uff08\u6e05\u97f3\uff09\r\n\u3070\uff08\u6fc1\u97f3\uff09\r\n\u3071\uff08\u534a\u6fc1\u97f3\uff09\r\n\u30cf\uff08\u6e05\u97f3\uff09\r\n\u30d0\uff08\u6fc1\u97f3\uff09\r\n\u30d1\uff08\u534a\u6fc1\u97f3\uff09\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><span class=\"o\">{<\/span>a,A,\uff21,b,B,\uff22,c,C,\uff23,d,D,\uff24,e,E,\uff25,f,F,\uff26,g,G,\uff27,h,H,\uff28,i,I,\uff29,j,J,\uff2a,k,K,\uff2b,l,L,\uff2c,m,M,\uff2d,n,N,\uff2e,o,O,\uff2f,p,P,\uff30,q,Q,\uff31,r,R,\uff32,s,S,\uff33,t,T,\uff34,u,U,\uff35,v,V,\uff36,w,W,\uff37,x,X,\uff38,y,Y,\uff39,z,Z,\uff3a<span class=\"o\">}<\/span>\r\n \r\n\u30a2\u30a4\u30a6\u30a8\u30aa\u4e00\u3064\u305a\u3064\u300c\u30ab\u30bf\u30ab\u30ca \u2192 \u3072\u3089\u304c\u306a\u300d\u306e\u9806\u306b\u4e26\u3073\u307e\u3059\u3002\r\n\u30cf\uff08\u6e05\u97f3\uff09\r\n\u306f\uff08\u6e05\u97f3\uff09\r\n\u30d0\uff08\u6fc1\u97f3\uff09\r\n\u3070\uff08\u6fc1\u97f3\uff09\r\n\u30d1\uff08\u534a\u6fc1\u97f3\uff09\r\n\u3071\uff08\u534a\u6fc1\u97f3\uff09\r\n<\/code><\/pre>\n<h2>\u66f4\u6539\u65e5\u5fd7\u8f93\u51fa\u8bbe\u7f6e<\/h2>\n<p>\u5c06logging_collector\u4ece&#8221;off&#8221;\u66f4\u6539\u4e3a&#8221;on&#8221;\uff0c\u5e76\u5c06\u65e5\u5fd7\u8f93\u51fa\u5230pg_log\u6587\u4ef6\u5939\u3002<br \/>\n\u5e94\u8be5\u8bbe\u7f6e\u4e09\u4e2a\u4e0e\u65e5\u5fd7\u76f8\u5173\u7684\u53c2\u6570\u4ee5\u5e94\u5bf9\u6545\u969c\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">logging_collector<\/span> = <span class=\"n\">on<\/span>\t\t<span class=\"c\"># Enable capturing of stderr and csvlog\r\n<\/span><span class=\"n\">log_line_prefix<\/span>=<span class=\"s1\">'[%t] %u %d %p[%l] '<\/span>\t<span class=\"c\"># special values:\r\n<\/span><\/code><\/pre>\n<p>\u203b\u6539\u52a8\u540e\uff0c\u8bf7\u91cd\u65b0\u542f\u52a8PostgreSQL\u670d\u52a1\u3002<\/p>\n<pre class=\"post-pre\"><code>[2019-04-25 14:37:08 JST]  7496[1] LOG:  database system was shut down at 2019-04-25 14:37:06 JST\r\n[2019-04-25 14:37:08 JST]  7496[2] LOG:  MultiXact member wraparound protections are now enabled\r\n[2019-04-25 14:37:08 JST]  6592[3] LOG:  database system is ready to accept connections\r\n[2019-04-25 14:37:08 JST]  3240[1] LOG:  autovacuum launcher started\r\n<\/code><\/pre>\n<p>\u30102020\/04\/03\u8865\u5145\u3011<br \/>\n\u5f53\u53d1\u751f\u9519\u8bef\u65f6\uff0c\u77e5\u9053\u5ba2\u6237\u7aefIP\u548c\u5e94\u7528\u7a0b\u5e8f\u4f1a\u66f4\u5bb9\u6613\u8ffd\u8e2a\u5230\u9519\u8bef\u7684\u539f\u56e0\u3002<br \/>\n%r\uff1a\u8f93\u51fa\u5ba2\u6237\u7aefIP\u5730\u5740<br \/>\n%a\uff1a\u8f93\u51fa\u5e94\u7528\u7a0b\u5e8f\uff0c\u4f8b\u5982psql pgAdmin III\uff0c\u5927\u90e8\u5206\u662f\u672a\u77e5[unknown]\u7684\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">log_line_prefix<\/span>=<span class=\"s1\">'[%t] %u %d %p[%l] %r %a '<\/span>\t<span class=\"c\"># special values:\r\n<\/span><\/code><\/pre>\n<pre class=\"post-pre\"><code>[2020-03-30 17:42:57 JST] hoge test 5912[1] 127.0.0.1(65080) psql ERROR: \u00a0duplicate key value violates unique constraint \"pk_sno\"\r\n[2020-03-31 10:26:21 JST] hoge test 4172[1] 10.20.30.1(54228) pgAdmin III- ?????????????????? ERROR: \u00a0syntax error at or near \"elect\" at character 1\r\n[2020-03-31 16:21:20 JST] hoge test 7424[1] 192.168.0.105(49160) [unknown] LOG: \u00a0could not receive data from client: An existing connection was forcibly closed by the remote host.\r\n<\/code><\/pre>\n<p>\u7531\u4e8e\u4f7f\u5ba2\u6237\u7aefIP\u53ef\u89c1\uff0c\u6211\u4eec\u80fd\u591f\u786e\u5b9a\u8fde\u63a5\u88ab\u7ec8\u6b62\u7684IP\u5730\u5740\u662f\u672c\u5730\uff08127.0.0.1\uff09\uff0c\u800c\u4e0d\u662f\u8fdc\u7a0b\u5730\u5740\u3002\u8fd9\u6837\u6211\u4eec\u5c31\u80fd\u627e\u51fa\u95ee\u9898\u7684\u539f\u56e0\u4e86\u3002\u539f\u6765\uff0c\u670d\u52a1\u5668\u76d1\u63a7\u8f6f\u4ef6\u5728300\u79d2\u8d85\u65f6\u540e\u4f1a\u5f3a\u5236\u65ad\u5f00\u8fde\u63a5\u3002<\/p>\n<h2>\u7701\u7565\u8f93\u5165psql\u5bc6\u7801<\/h2>\n<p>\u8981\u5728\u6ca1\u6709\u8f93\u5165\u5bc6\u7801\u7684\u60c5\u51b5\u4e0b\u6267\u884cpsql\uff0c\u9700\u8981\u5728\u4e0b\u9762\u7684\u6587\u4ef6\u5939\u4e2d\u7684&#8221;pgpass.conf&#8221;\u4e2d\u8bbe\u7f6e\u5bc6\u7801\u3002<br \/>\n%APPDATA%\\postgresql\\pgpass.conf<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">localhost<\/span>:<span class=\"m\">5432<\/span>:*:<span class=\"n\">postgres<\/span>:(\u30d1\u30b9\u30ef\u30fc\u30c9)\r\n<\/code><\/pre>\n<p>\u4f5c\u4e3a\u53e6\u4e00\u79cd\u9009\u62e9\uff0c\u867d\u7136\u5728\u5b89\u5168\u6027\u4e0a\u4e0d\u63a8\u8350\uff0c\u4f46\u53ef\u4ee5\u5728\u6279\u5904\u7406\u6587\u4ef6\u4e2d\u8bbe\u7f6e\u73af\u5883\u53d8\u91cf\uff08PGPASSWORD\uff09\u7136\u540e\u8fd0\u884c\u3002<\/p>\n<pre class=\"post-pre\"><code>SET <span class=\"nv\">PGPASSWORD<\/span><span class=\"o\">=(<\/span>\u30d1\u30b9\u30ef\u30fc\u30c9<span class=\"o\">)<\/span>\r\npsql <span class=\"nt\">-U<\/span> <span class=\"o\">(<\/span>\u30e6\u30fc\u30b6\u30fc<span class=\"o\">)<\/span> <span class=\"nt\">-f<\/span> xxxxx.sql \r\n<\/code><\/pre>\n<h1>\u66f4\u6539\u7684\u6570\u636e\u7c7b\u578b\uff0c\u51fd\u6570<\/h1>\n<h2>\u6570\u636e\u7c7b\u578b<\/h2>\n<p>\u5728\u521b\u5efa\u8868\u65f6\u9700\u8981\u66f4\u6539\u7684\u6570\u636e\u7c7b\u578b\u5982\u4e0b\u6240\u793a\u3002\u203b\u4ec5\u4ee3\u8868\u4e2a\u4eba\u89c2\u70b9\u3002<\/p>\n<div>\n<div class=\"post-table\">Oracle\u306e\u30c7\u30fc\u30bf\u578bPostgreSQL\u8aac\u660e\u5099\u8003VARCHAR2(n)CHARACTER VARYING(n)\u6700\u5927n\u6587\u5b57\u306e\u9577\u3055\u306e\u6587\u5b57\u5217Oracle\u306f\u30d0\u30a4\u30c8\u6570\u3060\u304cPostgreSQL\u306f\u6587\u5b57\u6570\u3068\u306a\u308bNUMBERNUMERIC\u6700\u59271000\u6841\u3001\u30e6\u30fc\u30b6\u6307\u5b9a\u7cbe\u5ea6<br \/>\nDATETIMESTAMPDATE\u306e\u307e\u307e\u3060\u3068\u65e5\u4ed8\u306e\u307f\u306b\u306a\u308b<br \/>\nSYSDATEcurrent_timestamp<br \/>\n\u203bSQL92\u306b\u5f93\u3044now()\u306f\u4f7f\u308f\u306a\u3044\u73fe\u5728\u306e\u65e5\u4ed8\/\u6642\u523b\u3092\u53d6\u5f97\u3059\u308b\u95a2\u6570HH24MMSS \u2192 HH24MISSROWIDoid32bit(\u7d0443\u5104)\u3067\u4e00\u5468\u3057\u3066\u3057\u307e\u3046Create\u6587\u3067WITH OIDS\u3068\u8a2d\u5b9a\u3057\u306a\u3044\u3068\u4f7f\u7528\u3067\u304d\u306a\u3044\u3002PostgreSQL12\u4ee5\u964d\u306fWITH OIDS\u5ec3\u6b62<\/div>\n<\/div>\n<p>\u8bf7\u4f7f\u7528\u4ee5\u4e0b\u53c2\u7167\u8fdb\u884cOracle_fdw\u7684\u6570\u636e\u7c7b\u578b\u6620\u5c04\u3002<\/p>\n<h3>\u8bf7\u7559\u610f<\/h3>\n<p>Oracle\u4e2d\u7684VARCHAR2\u662f\u4ee5\u5b57\u8282\u8ba1\u7b97\u7684\uff0c\u800cPostgreSQL\u4e2d\u7684CHARACTER VARYING\u662f\u4ee5\u5b57\u7b26\u8ba1\u7b97\u7684\u3002<br \/>\n\u5c06Oracle\u7684NUMBER\u7c7b\u578b\u76f4\u63a5\u8f6c\u6362\u4e3aPostgreSQL\u7684NUMERIC\u7c7b\u578b\u5b58\u5728\u4e00\u4e9b\u5f0a\u7aef\u3002<br \/>\n\u5982\u679c\u53ea\u80fd\u5b58\u653e\u6574\u6570\uff0c\u53ef\u80fd\u66f4\u597d\u7684\u9009\u62e9\u662f\u76f4\u63a5\u4f7f\u7528smallint\u7c7b\u578b\u6216integer\u7c7b\u578b\u3002<\/p>\n<p>\u5728.NET\u5e94\u7528\u7a0b\u5e8f\u4e2d\uff0c\u7531\u4e8e\u7c7b\u578b\u8f6c\u6362\u9519\u8bef\u5bfc\u81f4\u9700\u8981\u4fee\u590d\u7a0b\u5e8f\u3002<br \/>\n\u5728Oracle\u4e2d\uff0cNumber\u7c7b\u578b\u4ec5\u9650\u6574\u6570\uff0c\u56e0\u6b64\u4e4b\u524d\u4f7f\u7528(int)\u8fdb\u884c\u7c7b\u578b\u8f6c\u6362\uff0c\u4f46\u5728PostgreSQL\u4e2d\uff0cNUMERIC\u7c7b\u578b\u5c06\u8f6c\u6362\u4e3aDecimal\u7c7b\u578b\uff0c\u5982\u679c\u5728\u4f7f\u7528DataRow\u65f6\u4f7f\u7528(int)\u8fdb\u884c\u7c7b\u578b\u8f6c\u6362\uff0c\u5c06\u4f1a\u53d1\u751f\u7c7b\u578b\u8f6c\u6362\u9519\u8bef\u3002\u56e0\u6b64\uff0c\u6211\u8fdb\u884c\u4e86\u4fee\u6b63\uff0c\u4f7f\u7528Convert.ToInt32\u8fdb\u884c\u7c7b\u578b\u8f6c\u6362\u3002<br \/>\n\u53c2\u8003\uff1a\u5f53\u4eceDataRow\u4e2d\u63d0\u53d6\u503c\u65f6\uff0c\u65e0\u6cd5\u5c06\u5176\u8f6c\u6362\u4e3adecimal\u7c7b\u578b\u3002<\/p>\n<h2>\u51fd\u6570<\/h2>\n<p>\u5728\u521b\u5efa\u8868\u65f6\u9700\u8981\u66f4\u6539\u7684\u51fd\u6570\u5982\u4e0b\u6240\u793a\u3002<\/p>\n<div>\n<div class=\"post-table\">Oracle\u6f14\u7b97\u5b50PostgreSQL\u306e\u6f14\u7b97\u5b50\u8aac\u660eNVL(\u6587\u5b57\u5217,\u5909\u63db\u6587\u5b57\u5217)COALESCE(\u6587\u5b57\u5217,\u5909\u63db\u6587\u5b57\u5217)\u6587\u5b57\u5217\u304cNULL\u306e\u5834\u5408\u306f\u3001\u5909\u63db\u6587\u5b57\u5217\u3092\u8fd4\u3059\u3001NULL\u3067\u306a\u3051\u308c\u3070\u6587\u5b57\u5217\u3092\u8fd4\u3059\u3002INSTR(\u6587\u5b57\u5217,\u691c\u7d22\u6587\u5b57\u5217)POSITION(\u691c\u7d22\u6587\u5b57\u5217,IN \u6587\u5b57\u5217)\u6587\u5b57\u5217\u304b\u3089\u691c\u7d22\u6587\u5b57\u5217\u3067\u59cb\u307e\u308b\u4f4d\u7f6e\u3092\u8fd4\u3059\u3002DECODE(expr, cmp_expr1, ret_expr1, cmp_expr2, ret_expr2, default_expr)CASE expr<br \/>\nWHEN cmp_expr1 THEN ret_expr1<br \/>\nWHEN cmp_expr2 THEN ret_expr2<br \/>\nELSE default_expr ENDexpr\u304ccmp_expr1\u3068\u540c\u5024\u306a\u3089ret_expr1\u3092\u8fd4\u3059\u3001cmp_expr2\u3068\u540c\u5024\u306a\u3089ret_expr2\u3092\u8fd4\u3059\u3001\u305d\u308c\u4ee5\u5916\u306a\u3089default_expr\u3092\u8fd4\u3059\u3002SELECT t1.key1, t1.name1, t2.name2 FROM table t1, table t2 WHERE t1.key1 = t2.key2(+)SELECT t1.key1, t1.name1, t2.name2 FROM table t1 LEFT OUTER JOIN table t2 ON t1.key1 = t2.keyt1\u306e\u5217key1\u306b\u3057\u304b\u5b58\u5728\u3057\u306a\u3044\u30c7\u30fc\u30bf\u3092\u691c\u7d22<\/div>\n<\/div>\n<h3>\u6709\u5173SUBSTR\u7684\u5185\u5bb9<\/h3>\n<p>\u5f53\u7b2c2\u53c2\u6570\u7684\u8d77\u59cb\u7d22\u5f15\u4e3a&#8221;0&#8243;\u65f6\uff0c\u5728Oracle\u4e2d\u4e0e\u8d77\u59cb\u7d22\u5f15&#8221;1&#8243;\u76f8\u540c\uff0c\u4f46\u5728PostgreSQL\u4e2d\u4f1a\u5220\u9664\u524d1\u4e2a\u5b57\u7b26\u3002<br \/>\n\u203b\u53ef\u4ee5\u5c06\u7b2c2\u53c2\u6570\u7684\u8d77\u59cb\u7d22\u5f15\u89c6\u4e3a\u4ece&#8221;1&#8243;\u5f00\u59cb\u3002<br \/>\n[\u6570\u636e\u5e93\u6bd4\u8f83]\u5b50\u5b57\u7b26\u4e32\u83b7\u53d6SUBSTR\u7684\u9677\u9631<\/p>\n<pre class=\"post-pre\"><code><span class=\"c1\">-- Oracle<\/span>\r\n<span class=\"k\">SELECT<\/span> <span class=\"n\">SUBSTR<\/span><span class=\"p\">(<\/span><span class=\"s1\">'ABCDE'<\/span><span class=\"p\">,<\/span><span class=\"mi\">0<\/span><span class=\"p\">,<\/span><span class=\"mi\">3<\/span><span class=\"p\">)<\/span> <span class=\"k\">FROM<\/span> <span class=\"n\">DUAL<\/span> <span class=\"o\">-&gt;<\/span> <span class=\"s1\">'ABC'<\/span>\r\n<span class=\"c1\">-- PostgreSQL<\/span>\r\n<span class=\"k\">SELECT<\/span> <span class=\"n\">SUBSTR<\/span><span class=\"p\">(<\/span><span class=\"s1\">'ABCDE'<\/span><span class=\"p\">,<\/span><span class=\"mi\">0<\/span><span class=\"p\">,<\/span><span class=\"mi\">3<\/span><span class=\"p\">)<\/span> <span class=\"o\">-&gt;<\/span> <span class=\"s1\">'AB'<\/span>\r\n<\/code><\/pre>\n<p>\u5982\u679c\u7b2c\u4e8c\u4e2a\u53c2\u6570\u662f\u8d1f\u6570\uff08\u8868\u793a\u8981\u4ece\u53f3\u8fb9\u83b7\u53d6\uff09\uff0c\u9700\u8981\u6ce8\u610f\u3002\u5982\u679c\u60f3\u4ece\u53f3\u8fb9\u83b7\u53d6\uff0c\u53ef\u4ee5\u4f7f\u7528RIGHT\u51fd\u6570\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"c1\">-- Oracle<\/span>\r\n<span class=\"k\">SELECT<\/span> <span class=\"n\">SUBSTR<\/span><span class=\"p\">(<\/span><span class=\"s1\">'123456'<\/span><span class=\"p\">,<\/span> <span class=\"o\">-<\/span><span class=\"mi\">4<\/span><span class=\"p\">,<\/span> <span class=\"mi\">4<\/span><span class=\"p\">)<\/span> <span class=\"k\">FROM<\/span> <span class=\"n\">DUAL<\/span> <span class=\"o\">-&gt;<\/span> <span class=\"s1\">'3456'<\/span>\r\n<span class=\"c1\">-- PostgreSQL<\/span>\r\n<span class=\"k\">SELECT<\/span> <span class=\"n\">SUBSTR<\/span><span class=\"p\">(<\/span><span class=\"s1\">'123456'<\/span><span class=\"p\">,<\/span><span class=\"o\">-<\/span><span class=\"mi\">4<\/span><span class=\"p\">,<\/span> <span class=\"mi\">4<\/span><span class=\"p\">)<\/span> <span class=\"o\">-&gt;<\/span> <span class=\"k\">null<\/span>\r\n<span class=\"k\">SELECT<\/span> <span class=\"k\">RIGHT<\/span><span class=\"p\">(<\/span><span class=\"s1\">'123456'<\/span><span class=\"p\">,<\/span> <span class=\"mi\">4<\/span><span class=\"p\">)<\/span> <span class=\"o\">-&gt;<\/span> <span class=\"s1\">'3456'<\/span>\r\n<\/code><\/pre>\n<h3>\u6587\u5b57\u4e32\u9023<\/h3>\n<p>\u5f53\u5728SELECT\u8bed\u53e5\u4e2d\u8fde\u63a5\u5305\u542bnull\u5b57\u7b26\u4e32\u7684\u5217\u65f6\uff0c\u6574\u4e2a\u7ed3\u679c\u5c06\u53d8\u4e3anull\u3002<br \/>\n\u4e3a\u4e86\u907f\u514d\u8fd9\u79cd\u60c5\u51b5\uff0c\u53ef\u4ee5\u4e3a\u6bcf\u5217\u6307\u5b9a\u66ff\u4ee3null\u7684\u5b57\u7b26\u4e32\u3002<br \/>\n[PostgreSQL] PostgreSQL\u4e2d\u5728SELECT\u8bed\u53e5\u4e2d\u8fde\u63a5Null\u5b57\u7b26\u4e32\u7684\u65b9\u6cd5\u662f\u4ec0\u4e48\uff1f<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">SELECT<\/span> <span class=\"n\">ok_column<\/span> <span class=\"o\">||<\/span> <span class=\"s1\">'-'<\/span> <span class=\"o\">||<\/span> <span class=\"n\">coalesce<\/span><span class=\"p\">((<\/span><span class=\"n\">null_column<\/span><span class=\"p\">,<\/span> <span class=\"s1\">''<\/span><span class=\"p\">)<\/span> <span class=\"k\">FROM<\/span> <span class=\"n\">foo<\/span><span class=\"p\">;<\/span>\r\n<\/code><\/pre>\n<h1>\u89c4\u683c<\/h1>\n<p>\u4ed5\u69d8\u5dee\u6bd4\u529f\u80fd\u5dee\u66f4\u4e3a\u68d8\u624b\u3002<\/p>\n<p>PostgreSQL \u4f01\u4e1a\u8054\u76df\u6280\u672f\u90e8\u95e8\u7b2c2\u5de5\u4f5c\u7ec4<br \/>\n\u4ece\u4e0d\u540c\u79cd\u7c7b\u7684 DBMS \u8fc1\u79fb\u5230 PostgreSQL \u7684\u6570\u636e\u8fc1\u79fb\u548c\u5b57\u7b26\u7f16\u7801\u8f6c\u6362<br \/>\n\u94fe\u63a5\uff1ahttps:\/\/www.pgecons.org\/wp-content\/uploads\/PGECons\/2013\/WG2\/05_DataMigrationResearch_ConvertCharacterCode.pdf<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">SQL\u306e\u89b3\u70b9\u304b\u3089\u300cOracle Database\u300d\u300cPostgreSQL\u300d\u300cMySQL\u300d\u306e\u7279\u5fb4\u3092\u6574\u7406\u3057\u3088\u3046\uff01<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">Oracle\u304b\u3089PostgreSQL\u306b\u4e57\u308a\u63db\u3048\u305f\u3044\u4eba\u306b\u9001\u308b\u4f55\u304b<\/ul>\n<h2>\u5bf9\u4e8eNULL\u548c\u7a7a\u5b57\u7b26\u4e32\u7684\u5904\u7406<\/h2>\n<p>\u5728Oracle\u4e2d\uff0cNULL\u548c\u7a7a\u5b57\u7b26\u4e32\u88ab\u89c6\u4e3a\u76f8\u540c\u7684\uff0c\u4f46\u5728PostgreSQL\u4e2d\u5219\u88ab\u533a\u5206\u4e3a\u4e24\u4e2a\u4e0d\u540c\u7684\u5bf9\u8c61\u3002<\/p>\n<h2>\u9664\u6cd5\u8fd0\u7b97\u4f1a\u4ea7\u751f\u8bef\u5dee\u3002<\/h2>\n<p>\u5982\u679cSQL\u5185\u90e8\u5b9e\u73b0\u4e86\u5305\u542b\u9664\u6cd5\u8fd0\u7b97\u7684\u8ba1\u7b97\uff0c\u7b54\u6848\u5c06\u4e0d\u4e00\u81f4\u3002\u8fd9\u4e0d\u662f\u4e00\u4e2a\u9519\u8bef\uff0c\u800c\u662f\u4e00\u79cd\u89c4\u8303\u3002<\/p>\n<p>\u8981\u4e48\u5141\u8bb8\u8bef\u5dee\uff0c\u8981\u4e48\u5982\u679c\u4e0d\u80fd\u5bb9\u5fcd\u8bef\u5dee\u7684\u8bdd\uff0c\u5e94\u8be5\u5728SQL\u4e2d\u53ea\u5b58\u50a8\u8ba1\u7b97\u7ed3\u679c\u800c\u4e0d\u8fdb\u884c\u8ba1\u7b97\u3002<\/p>\n<div>\n<div class=\"post-table\">OraclePostgreSQL1\u00f73\u00d73=11\u00f73\u00d73=0.999\u20261\/3+1\/3+1\/3=11\/3+1\/3+1\/3=0.999\u2026<\/div>\n<\/div>\n<h2>\u4ea4\u6613\u7ed3\u679c\u4e0d\u540c<\/h2>\n<p>\u5f53\u4f7f\u7528\u591a\u4e2a\u4e8b\u52a1\u65f6\uff0c\u4e8b\u52a1\u7684\u5e76\u53d1\u6267\u884c\u7ed3\u679c\u5c06\u4f1a\u4e0d\u540c\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">PostgreSQL\u3068Oracle Database\u306e\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u69cb\u9020<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u65e5\u7d4cSYSTEMS 2019\/7 \u7279\u96c62 Oracle DB\u3000\u30b3\u30b9\u30c8\u524a\u6e1b\u5927\u4f5c\u6226<\/ul>\n<h1>SQL\u8bed\u53e5\u8fc1\u79fb<\/h1>\n<h2>\u5728\u4e2d\u6587\u4e2d\uff0c\u53ef\u4ee5\u8fd9\u6837\u8868\u8fbe\uff1a<br \/>\n\u8868\u540d\u548c\u5217\u540d\u7684\u5927\u5c0f\u5199\u533a\u5206<\/h2>\n<blockquote><p>\u6ca1\u6709\u5f15\u53f7\u7684\u6807\u8bc6\u7b26\u59cb\u7ec8\u88ab\u89e3\u91ca\u4e3a\u5c0f\u5199\uff0c\u4f46\u901a\u8fc7\u7528\u5f15\u53f7\u62ec\u8d77\u6765\uff0c\u53ef\u4ee5\u533a\u5206\u5927\u5c0f\u5199\u3002\u4f8b\u5982\uff0c\u6807\u8bc6\u7b26FOO\u3001foo\u548c&#8221;foo&#8221;\u5728PostgreSQL\u4e2d\u88ab\u89c6\u4e3a\u76f8\u540c\uff0c\u4f46&#8221;Foo&#8221;\u548c&#8221;FOO&#8221;\u88ab\u89c6\u4e3a\u4e0d\u540c\u7684\u6807\u8bc6\u7b26\uff08\u56e0\u4e3aPostgreSQL\u5c06\u6ca1\u6709\u5f15\u53f7\u7684\u6807\u8bc6\u7b26\u89e3\u91ca\u4e3a\u5c0f\u5199\uff0c\u5e76\u4e0d\u4e0e\u6807\u51c6SQL\u517c\u5bb9\u3002\u6839\u636e\u6807\u51c6SQL\uff0c\u6ca1\u6709\u5f15\u53f7\u7684\u6807\u8bc6\u7b26\u5e94\u8be5\u88ab\u89e3\u91ca\u4e3a\u5927\u5199\u3002\u56e0\u6b64\uff0c\u6839\u636e\u6807\u51c6SQL\uff0cfoo\u5e94\u8be5\u4e0e&#8221;FOO&#8221;\u76f8\u540c\uff0c\u4e0e&#8221;foo&#8221;\u4e0d\u540c\u3002\u5982\u679c\u60f3\u5199\u4e00\u4e2a\u53ef\u79fb\u690d\u7684\u5e94\u7528\u7a0b\u5e8f\uff0c\u5efa\u8bae\u5c06\u7279\u5b9a\u7684\u6807\u8bc6\u7b26\u7edf\u4e00\u5730\u7528\u5f15\u53f7\u62ec\u8d77\u6765\uff0c\u6216\u8005\u5b8c\u5168\u4e0d\u7528\u5f15\u53f7\u62ec\u8d77\u6765\uff09\u3002<\/p><\/blockquote>\n<p>\u5982\u679c\u67e5\u8be2\u6761\u4ef6\u4e2d\u4f7f\u7528\u4e86\u8868\u540d\u6216\u5217\u540d\uff0c\u7531\u4e8ePostgreSQL\u5c06\u5176\u8f6c\u6362\u4e3a\u82f1\u6587\u5c0f\u5199\uff0c\u56e0\u6b64\u9700\u8981\u5c06\u82f1\u6587\u5927\u5199\u5b57\u6bcd\u8f6c\u6362\u4e3a\u5c0f\u5199\u5b57\u6bcd\u3002<\/p>\n<h2>\u6587\u5b57\u578b\u7684\u6570\u503c\u6bd4\u8f83\u4f1a\u51fa\u73b0\u9519\u8bef\u3002<\/h2>\n<p>\u5728PostgreSQL\u7684\u60c5\u51b5\u4e0b\uff0c\u5982\u679c\u5728Numeric\u7c7b\u578b\u540e\u9762\u52a0\u4e0a\u5355\u5f15\u53f7\u6765\u6307\u5b9a\uff0c\u4f1a\u5bfc\u81f4\u9519\u8bef\u3002<br \/>\n\u4fee\u6b63\u793a\u4f8b\uff1aKBN=1 \u2192 KBN=&#8217;1&#8242;<\/p>\n<p>\u5728PostgreSQL\u4e2d\uff0c\u5982\u679c\u6ca1\u6709\u7ed91\u4f4d\u5b57\u7b26\u578b\u7684varchar\u7c7b\u578b\u52a0\u4e0a\u5355\u5f15\u53f7\u8fdb\u884c\u6307\u5b9a\uff0c\u5c31\u4f1a\u51fa\u73b0\u9519\u8bef\u3002<br \/>\n\u4fee\u6b63\u4f8b\uff1aKBN=&#8217;1&#8242; \u2192 KBN=1<\/p>\n<h2>\u6587\u7a3f\u683c\u5f0f<\/h2>\n<p>\u5728 PostgreSQL \u4e2d\uff0cto_char\/to_number \u51fd\u6570\u9700\u8981\u6307\u5b9a\u7b2c2\u4e2a\u53c2\u6570\uff0c\u5982\u679c\u7701\u7565\u5219\u4f1a\u51fa\u9519\u3002<br \/>\n\u8fc1\u79fb\u5230 PostgreSQL<\/p>\n<p>\u5728PostgreSQL\u4e2d\uff0c\u4f7f\u7528to_char\u51fd\u6570\u4f1a\u5728\u5b57\u7b26\u4e32\u7684\u5f00\u5934\u6dfb\u52a0\u4e00\u4e2a\u534a\u89d2\u7a7a\u683c\u3002<br \/>\n\u901a\u8fc7\u5728to_char\u51fd\u6570\u7684\u7b2c\u4e8c\u4e2a\u53c2\u6570\u4e2d\u6dfb\u52a0FM\u524d\u7f00\uff0c\u53ef\u4ee5\u53d6\u6d88\u81ea\u52a8\u6dfb\u52a0\u7684\u534a\u89d2\u7a7a\u683c\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"c1\">-- Oracle<\/span>\r\n<span class=\"k\">SELECT<\/span> <span class=\"n\">TO_CHAR<\/span><span class=\"p\">(<\/span><span class=\"mi\">10<\/span><span class=\"p\">,<\/span> <span class=\"s1\">'00000'<\/span><span class=\"p\">)<\/span> <span class=\"k\">FROM<\/span> <span class=\"n\">DUAL<\/span> <span class=\"o\">-&gt;<\/span> <span class=\"s1\">'00010'<\/span>\r\n<span class=\"c1\">-- PostgreSQL \u5148\u982d\u306e\u534a\u89d2\u30b9\u30da\u30fc\u30b9\u304c\u5165\u308b<\/span>\r\n<span class=\"k\">SELECT<\/span> <span class=\"n\">to_char<\/span><span class=\"p\">(<\/span><span class=\"mi\">10<\/span><span class=\"p\">,<\/span> <span class=\"s1\">'00000'<\/span><span class=\"p\">)<\/span> <span class=\"o\">-&gt;<\/span> <span class=\"s1\">' 00010'<\/span>\r\n<span class=\"c1\">-- PostgreSQL<\/span>\r\n<span class=\"k\">SELECT<\/span> <span class=\"n\">to_char<\/span><span class=\"p\">(<\/span><span class=\"mi\">10<\/span><span class=\"p\">,<\/span> <span class=\"s1\">'FM00000'<\/span><span class=\"p\">)<\/span> <span class=\"o\">-&gt;<\/span> <span class=\"s1\">'00010'<\/span>\r\n<\/code><\/pre>\n<p>PostgreSQL\u7684\u6578\u5b57\u5b57\u4e32\u8f49\u63db<\/p>\n<h2>\u6dfb\u52a0DUAL\u8868<\/h2>\n<p>Oracle\u6709\u4e00\u4e2aDUAL\u8868\uff0c\u4f46\u662fPostgreSQL\u6ca1\u6709\u3002<br \/>\n\u5728PostgreSQL\u4e2d\u4e0d\u9700\u8981\u5199FROM\u3002<br \/>\nDUAL\u8868\u5728Oracle\u4e2d\u7684\u8bed\u6e90\u662f\u4ec0\u4e48\uff1f<\/p>\n<pre class=\"post-pre\"><code><span class=\"c1\">-- Oracle<\/span>\r\n<span class=\"k\">SELECT<\/span> <span class=\"s1\">''<\/span> <span class=\"k\">FROM<\/span> <span class=\"n\">DUAL<\/span>\r\n<span class=\"c1\">-- PostgreSQL<\/span>\r\n<span class=\"k\">SELECT<\/span> <span class=\"s1\">''<\/span>\r\n<\/code><\/pre>\n<p>\u901a\u8fc7\u521b\u5efaDUAL\u8868\uff0c\u4ee5\u4fbf\u5728\u8fc1\u79fb\u64cd\u4f5c\u4e2d\u4e0d\u4f1a\u9047\u5230\u56f0\u96be\uff0c\u4f7f\u5176\u4e0eOracle\u8868\u73b0\u76f8\u540c\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">CREATE<\/span> <span class=\"k\">TABLE<\/span> <span class=\"n\">DUAL<\/span> <span class=\"p\">(<\/span>\r\n    <span class=\"n\">DUMMY<\/span> <span class=\"nb\">CHARACTER<\/span> <span class=\"nb\">VARYING<\/span><span class=\"p\">(<\/span><span class=\"mi\">1<\/span><span class=\"p\">)<\/span> <span class=\"k\">DEFAULT<\/span> <span class=\"s1\">'1'<\/span> <span class=\"k\">NOT<\/span> <span class=\"k\">NULL<\/span>\r\n<span class=\"p\">)<\/span>\r\n<span class=\"k\">WITH<\/span> <span class=\"p\">(<\/span>\r\n    <span class=\"k\">OIDS<\/span><span class=\"o\">=<\/span><span class=\"k\">FALSE<\/span>\r\n<span class=\"p\">);<\/span>\r\n\t\r\n<span class=\"c1\">-- OWNER\u8a2d\u5b9a<\/span>\r\n<span class=\"k\">ALTER<\/span> <span class=\"k\">TABLE<\/span> <span class=\"n\">DUAL<\/span>\r\n    <span class=\"k\">OWNER<\/span> <span class=\"k\">TO<\/span> <span class=\"n\">postgres<\/span><span class=\"p\">;<\/span>\r\n<\/code><\/pre>\n<p>\u30102021\/09\/08\u8ffd\u52a0\u3011<br \/>\n\u4e0e\u5176\u521b\u5efa\u8868\u683c\uff0c\u5c06\u5176\u4f5c\u4e3a\u89c6\u56fe\u66f4\u4e3a\u5e38\u89c1\u3002<br \/>\nPostgreSQL\u4e0eOracle\u4e4b\u95f4\u7684\u6570\u636e\u5e93\u4e92\u8fc1\u624b\u518c &#8211; ThinkIT<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">CREATE<\/span> <span class=\"k\">VIEW<\/span> <span class=\"n\">dual<\/span> <span class=\"k\">AS<\/span>\r\n  <span class=\"k\">SELECT<\/span> <span class=\"s1\">'X'<\/span> <span class=\"k\">AS<\/span> <span class=\"n\">DUMMY<\/span><span class=\"p\">;<\/span>\r\n<\/code><\/pre>\n<h2>\u6307\u5b9a\u7ed3\u679c\u96c6\u4e2d\u7684\u884c\u53f7<\/h2>\n<div>\n<div class=\"post-table\">OraclePostgreSQLROWNUMOFFSETLINE BETWEENOFFSET + LIMIT<\/div>\n<\/div>\n<pre class=\"post-pre\"><code><span class=\"c1\">-- Oracle<\/span>\r\n<span class=\"k\">SELECT<\/span> <span class=\"o\">*<\/span> <span class=\"k\">FROM<\/span> <span class=\"err\">\u5546\u54c1\u30de\u30b9\u30bf<\/span>\r\n<span class=\"k\">WHERE<\/span> <span class=\"err\">\u5378\u5358\u4fa1<\/span> <span class=\"k\">IS<\/span> <span class=\"k\">NOT<\/span> <span class=\"k\">NULL<\/span>\r\n<span class=\"k\">AND<\/span> <span class=\"n\">ROWNUM<\/span> <span class=\"o\">&lt;=<\/span> <span class=\"mi\">5<\/span>\r\n<span class=\"k\">ORDER<\/span> <span class=\"k\">BY<\/span> <span class=\"err\">\u5378\u5358\u4fa1<\/span> <span class=\"k\">DESC<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"c1\">-- PostgreSQL<\/span>\r\n<span class=\"k\">SELECT<\/span> <span class=\"o\">*<\/span> <span class=\"k\">FROM<\/span> <span class=\"err\">\u5546\u54c1\u30de\u30b9\u30bf<\/span>\r\n<span class=\"k\">WHERE<\/span> <span class=\"err\">\u5378\u5358\u4fa1<\/span> <span class=\"k\">IS<\/span> <span class=\"k\">NOT<\/span> <span class=\"k\">NULL<\/span>\r\n<span class=\"k\">ORDER<\/span> <span class=\"k\">BY<\/span> <span class=\"err\">\u5378\u5358\u4fa1<\/span> <span class=\"k\">DESC<\/span>\r\n<span class=\"k\">LIMIT<\/span> <span class=\"mi\">5<\/span> <span class=\"k\">OFFSET<\/span> <span class=\"mi\">0<\/span><span class=\"p\">;<\/span>\r\n<\/code><\/pre>\n<h2>\u5916\u90e8\u8fde\u63a5\uff08Outer Join\uff09\u8bed\u6cd5<\/h2>\n<div>\n<div class=\"post-table\">OraclePostgreSQLWHERE \u88681.\u5217A(+) = \u88682.\u5217AFROM \u88681 RIGHT OUTER JOIN \u88682 ON (\u88681.\u5217A = \u88682.\u5217A)WHERE \u88681.\u5217A = \u88682.\u5217A(+)FROM \u88681 LEFT OUTER JOIN \u88682 ON (\u88681.\u5217A = \u88682.\u5217A)<\/div>\n<\/div>\n<h2>\u6b21\u306e\u8a00\u8449\u3092\u4e2d\u56fd\u8a9e\u3067\u81ea\u7136\u306a\u8868\u73fe\u306b\u8a00\u3044\u63db\u3048\u308b\u3068\u3001\u4e00\u3064\u306e\u30aa\u30d7\u30b7\u30e7\u30f3\u304c\u3042\u308a\u307e\u3059\uff1a<\/h2>\n<p>\u526f\u95ee\u9898\u67e5\u8be2<\/p>\n<p>\u5728Scala\u5b50\u67e5\u8be2\u7684\u60c5\u51b5\u4e0b\uff0cOracle\u548cPostgreSQL\u7684\u8bed\u6cd5\u4e0d\u4f1a\u6709\u53d8\u5316\u3002\u4f46\u662f\uff0c\u5728\u4f7f\u7528FROM\u5b50\u53e5\u6216WHERE\u5b50\u53e5\u65f6\uff0cPostgreSQL\u9700\u8981\u4f7f\u7528\u522b\u540d\u3002<\/p>\n<h3>\u6807\u91cf\u5b50\u67e5\u8be2<\/h3>\n<p>\u6ca1\u6709\u533a\u522b<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">SELECT<\/span> <span class=\"err\">\u5546\u54c1\u540d<\/span> <span class=\"k\">FROM<\/span> <span class=\"err\">\u5546\u54c1\u30de\u30b9\u30bf<\/span>\r\n<span class=\"k\">WHERE<\/span> <span class=\"err\">\u5378\u5358\u4fa1<\/span> <span class=\"o\">=<\/span> <span class=\"p\">(<\/span><span class=\"k\">SELECT<\/span> <span class=\"k\">MAX<\/span><span class=\"p\">(<\/span><span class=\"err\">\u5378\u5358\u4fa1<\/span><span class=\"p\">)<\/span> <span class=\"k\">FROM<\/span> <span class=\"err\">\u5546\u54c1\u30de\u30b9\u30bf<\/span><span class=\"p\">);<\/span>\r\n<\/code><\/pre>\n<h3>\u5728\u4ece\u53e5\u4e2d\u8fdb\u884c\u526f\u95ee\u53e5\u7684\u67e5\u8be2\u65b9\u5f0f\u3002<\/h3>\n<p>\u5982\u679c\u5728PostgreSQL\u4e2d\u6ca1\u6709\u4e3a\u5b50\u67e5\u8be2\u6dfb\u52a0\u522b\u540d\uff08\u4f8b\u5982T\uff09\uff0c\u5219\u4f1a\u51fa\u73b0\u9519\u8bef\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"c1\">-- Oracle<\/span>\r\n<span class=\"k\">SELECT<\/span> <span class=\"err\">\u62c5\u5f53\u8005\u540d<\/span>\r\n<span class=\"k\">FROM<\/span> <span class=\"p\">(<\/span><span class=\"k\">SELECT<\/span> <span class=\"o\">*<\/span>\r\n      <span class=\"k\">FROM<\/span> <span class=\"err\">\u62c5\u5f53\u8005\u30de\u30b9\u30bf<\/span>\r\n      <span class=\"k\">WHERE<\/span> <span class=\"err\">\u751f\u5e74\u6708\u65e5<\/span><span class=\"o\">&lt;<\/span> <span class=\"s1\">'1970-1-1'<\/span><span class=\"p\">)<\/span>\r\n<span class=\"k\">WHERE<\/span> <span class=\"n\">MGR_ID<\/span> <span class=\"k\">IS<\/span> <span class=\"k\">NOT<\/span> <span class=\"k\">NULL<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"c1\">-- PostgreSQL<\/span>\r\n<span class=\"k\">SELECT<\/span> <span class=\"err\">\u62c5\u5f53\u8005\u540d<\/span>\r\n<span class=\"k\">FROM<\/span> <span class=\"p\">(<\/span><span class=\"k\">SELECT<\/span> <span class=\"o\">*<\/span>\r\n      <span class=\"k\">FROM<\/span> <span class=\"err\">\u62c5\u5f53\u8005\u30de\u30b9\u30bf<\/span>\r\n      <span class=\"k\">WHERE<\/span> <span class=\"err\">\u751f\u5e74\u6708\u65e5<\/span><span class=\"o\">&lt;<\/span> <span class=\"s1\">'1970-1-1'<\/span><span class=\"p\">)<\/span> <span class=\"n\">T<\/span>\r\n<span class=\"k\">WHERE<\/span> <span class=\"n\">MGR_ID<\/span> <span class=\"k\">IS<\/span> <span class=\"k\">NOT<\/span> <span class=\"k\">NULL<\/span><span class=\"p\">;<\/span>\r\n<\/code><\/pre>\n<h2>\u5728DELETE\u8bed\u53e5\u7684FROM\u5b50\u53e5\u4e2d\u4e0d\u80fd\u4f7f\u7528JOIN<\/h2>\n<p>\u5c06\u53e5\u5b50&#8221;USING&#8221;\u6539\u4e3a&#8221;\u4f7f\u7528&#8221;\u6216&#8221;\u5229\u7528&#8221;\u53e5\u5b50\uff0c\u5c06&#8221;IN&#8221;\u6539\u4e3a&#8221;\u5728&#8221;\u53e5\u5b50\u3002<\/p>\n<p>&nbsp;<\/p>\n<h2>\u5408\u5e76\u6587\u6863\u652f\u6301(PostgreSQL 15\u53ca\u66f4\u9ad8\u7248\u672c)\u3002<\/h2>\n<p>PostgreSQL 15\u73b0\u5df2\u652f\u6301MERGE\u8bed\u53e5\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">PostgreSQL15 \u691c\u8a3c\u30ec\u30dd\u30fc\u30c8 &#8211; pdf<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">PostgreSQL 15\u306bMERGE\u6587UPSERT\u304c\u3084\u3063\u3066\u304f\u308b<\/ul>\n<h2>\u96c6\u5408\u6f14\u7b97 (j\u00ed h\u00e9 \u7684\u610f\u601d\u662f\u5bf9\u96c6\u5408\u5143\u7d20\u8fdb\u884c\u64cd\u4f5c\u548c\u8ba1\u7b97\u7684\u4e00\u79cd\u6570\u5b66\u8fc7\u7a0b\u3002<\/h2>\n<p>\u5728UNION\u548cINTERSECT\u8bed\u53e5\u4e2d\u6ca1\u6709\u4efb\u4f55\u66f4\u6539\u3002\u7136\u800c\uff0c\u5728Oracle\u4e2d\u7684MINUS\u5b50\u53e5\u5728PostgreSQL\u4e2d\u88ab\u6539\u4e3aEXCEPT\u5b50\u53e5\u3002<br \/>\n\u203b\u7531\u4e8e\u5728\u6027\u80fd\u9a8c\u8bc1\u65f6EXCEPT\u5b50\u53e5\u8f83\u6162\uff0c\u56e0\u6b64\u6211\u4eec\u7ecf\u5e38\u5c06\u5176\u6539\u5199\u4e3aNOT EXISTS\u3002\u8fd9\u5e76\u4e0d\u4ec5\u4ec5\u662f\u7b80\u5355\u7684\u8f6c\u6362\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"c1\">-- Oracle<\/span>\r\n<span class=\"k\">SELECT<\/span> <span class=\"err\">\u62c5\u5f53\u8005<\/span><span class=\"n\">ID<\/span><span class=\"p\">,<\/span> <span class=\"err\">\u62c5\u5f53\u8005\u540d<\/span>\r\n<span class=\"k\">FROM<\/span> <span class=\"err\">\u62c5\u5f53\u8005\u30de\u30b9\u30bf<\/span>\r\n<span class=\"n\">MINUS<\/span>\r\n<span class=\"k\">SELECT<\/span> <span class=\"err\">\u652f\u5e97\u62c5\u5f53\u8005<\/span><span class=\"n\">ID<\/span><span class=\"p\">,<\/span> <span class=\"err\">\u652f\u5e97\u62c5\u5f53\u8005\u540d<\/span>\r\n<span class=\"k\">FROM<\/span> <span class=\"err\">\u652f\u5e97\u62c5\u5f53\u8005\u30de\u30b9\u30bf<\/span>\r\n<span class=\"k\">ORDER<\/span> <span class=\"k\">BY<\/span> <span class=\"mi\">1<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"c1\">-- PostgreSQL<\/span>\r\n<span class=\"k\">SELECT<\/span> <span class=\"err\">\u62c5\u5f53\u8005<\/span><span class=\"n\">ID<\/span><span class=\"p\">,<\/span> <span class=\"err\">\u62c5\u5f53\u8005\u540d<\/span>\r\n<span class=\"k\">FROM<\/span> <span class=\"err\">\u62c5\u5f53\u8005\u30de\u30b9\u30bf<\/span>\r\n<span class=\"k\">EXCEPT<\/span>\r\n<span class=\"k\">SELECT<\/span> <span class=\"err\">\u652f\u5e97\u62c5\u5f53\u8005<\/span><span class=\"n\">ID<\/span><span class=\"p\">,<\/span> <span class=\"err\">\u652f\u5e97\u62c5\u5f53\u8005\u540d<\/span>\r\n<span class=\"k\">FROM<\/span> <span class=\"err\">\u652f\u5e97\u62c5\u5f53\u8005\u30de\u30b9\u30bf<\/span>\r\n<span class=\"k\">ORDER<\/span> <span class=\"k\">BY<\/span> <span class=\"mi\">1<\/span><span class=\"p\">;<\/span>\r\n<\/code><\/pre>\n<h2>\u8907\u5408\u7d22\u5f15\u7684\u6307\u5b9a\u65b9\u5f0f<\/h2>\n<p>\u8fdb\u884c\u6027\u80fd\u9a8c\u8bc1\u65f6\uff0c\u5176\u4e2d\u4e00\u4e2a\u539f\u56e0\u662f\u5b83\u5f88\u6162\u3002<\/p>\n<p>\u5bf9\u4e8e\u5305\u542b\u4ece\u7d22\u5f15\u5b9a\u4e49\u7684\u7b2c\u4e00\u5217\u5f00\u59cb\u7684\u4efb\u610f\u6570\u91cf\u8fde\u7eed\u5411\u53f3\u7684\u5217\u7684\u67e5\u8be2\uff0c\u53ef\u4ee5\u4f7f\u7528\u591a\u5217\u7d22\u5f15\u3002<br \/>\n11.3. \u591a\u5217\u7d22\u5f15\u3002<\/p>\n<p>\u7531\u4e8e\u590d\u5408\u7d22\u5f15\u53ea\u5728\u8fde\u7eed\u6307\u5b9a\u7684\u5217\u4e2d\u6709\u6548\uff0c\u6240\u4ee5\u5982\u679c\u4ece\u7d22\u5f15\u5b9a\u4e49\u7684\u4e2d\u95f4\u5217\u5f00\u59cb\u6307\u5b9a\u6761\u4ef6\uff0c\u7d22\u5f15\u5c06\u5931\u6548\u5e76\u53d8\u6162\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">WHERE<\/span> <span class=\"n\">AC<\/span> <span class=\"o\">=<\/span> <span class=\"n\">xxx<\/span> <span class=\"k\">AND<\/span> <span class=\"n\">AD<\/span> <span class=\"o\">=<\/span> <span class=\"n\">xxx<\/span>\r\n      <span class=\"err\">\u2193<\/span>\r\n<span class=\"k\">WHERE<\/span> <span class=\"n\">AA<\/span> <span class=\"o\">=<\/span> <span class=\"n\">xxx<\/span> <span class=\"k\">AND<\/span> <span class=\"n\">AB<\/span> <span class=\"o\">=<\/span> <span class=\"n\">xxx<\/span> <span class=\"k\">AND<\/span> <span class=\"n\">AC<\/span> <span class=\"o\">=<\/span> <span class=\"n\">xxx<\/span> <span class=\"k\">AND<\/span> <span class=\"n\">AD<\/span> <span class=\"o\">=<\/span> <span class=\"n\">xxx<\/span>\r\n<\/code><\/pre>\n<h3>\u4e0eOracle\u7684\u4e0d\u540c<\/h3>\n<p>\u5bf9\u4e8eOracle\u6765\u8bf4\uff0c\u81ea\u4eceOracle 9i\u5f00\u59cb\uff0c\u5373\u4f7f\u7d22\u5f15\u4e2d\u7684\u7b2c\u4e00\u5217\u4e0d\u5305\u542b\u5728\u63d0\u53d6\u6761\u4ef6\u4e2d\uff0c\u4e5f\u53ef\u4ee5\u901a\u8fc7\u8df3\u8fc7\u7b2c\u4e00\u5217\u6765\u4f7f\u7528\u590d\u5408\u7d22\u5f15\u7684INDEX (SKIP SCAN)\u529f\u80fd\u3002\u7136\u800c\uff0c\u7531\u4e8ePostgreSQL\u76ee\u524d\u8fd8\u6ca1\u6709\u8fd9\u4e2a\u529f\u80fd\uff0c\u6240\u4ee5\u5fc5\u987b\u59cb\u7ec8\u4f7f\u7528\u7d22\u5f15\uff0c\u5c31\u5fc5\u987b\u786e\u4fdd\u63d0\u4f9b\u4e86\u7b2c\u4e00\u4e2a\u952e\u3002<\/p>\n<blockquote><p>\u8003\u8651\u4e00\u4e2a\u8868\u683c\u7684\u5217\uff08C1\u3001C2\u3001C3\uff09\u73b0\u5728\u6b63\u5728\u4f7f\u7528\u590d\u5408\u7d22\u5f15\u6765\u8fdb\u884c\u6392\u5e8f\u3002\u8fd9\u4e2a\u590d\u5408\u7d22\u5f15\u662f\u6839\u636eC1\u3001C2\u548cC3\u7684\u987a\u5e8f\u8fdb\u884c\u6392\u5217\u7684\u3002\u590d\u5408\u7d22\u5f15\u662f\u6307\u5b9a\u6784\u6210\u5217\u4e2d\u7684\u54ea\u4e00\u5217\u6765\u9009\u62e9\u5019\u9009\u9879\u3002<\/p><\/blockquote>\n<div>\n<div class=\"post-table\">C1C2C3Oracle<br \/>\n\u8907\u5408\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u5229\u7528\u53ef\u4e0d\u53efPostgreSQL<br \/>\n\u8907\u5408\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u5229\u7528\u53ef\u4e0d\u53ef\u25cb\u25cb\u25cb\u53ef\u53ef\u25cb\u25cb\u00d7\u53ef\u53ef\u25cb\u00d7\u00d7\u53ef\u53ef\u25cb\u00d7\u25cb\u53ef \u203bC1\u306e\u307f\u3001C3\u306f\u7121\u8996\u53ef \u203bC1\u306e\u307f\u3001C3\u306f\u7121\u8996\u00d7\u25cb\u25cb\u53ef \u203b\u7d22\u5f15\u30b9\u30ad\u30c3\u30d7\u30fb\u30b9\u30ad\u30e3\u30f3\u53ef \u203btable scan\u304c\u9078\u629e\u3055\u308c\u308b\u53ef\u80fd\u6027\u9ad8\u3044\u00d7\u25cb\u00d7\u53ef \u203b\u7d22\u5f15\u30b9\u30ad\u30c3\u30d7\u30fb\u30b9\u30ad\u30e3\u30f3\u53ef \u203btable scan\u304c\u9078\u629e\u3055\u308c\u308b\u53ef\u80fd\u6027\u9ad8\u3044\u00d7\u00d7\u25cb\u53ef \u203b\u7d22\u5f15\u30b9\u30ad\u30c3\u30d7\u30fb\u30b9\u30ad\u30e3\u30f3\u53ef \u203btable scan\u304c\u9078\u629e\u3055\u308c\u308b\u53ef\u80fd\u6027\u9ad8\u3044\u00d7\u00d7\u00d7\u4e0d\u53ef\u4e0d\u53ef<\/div>\n<\/div>\n<h3>\u4f7f\u7528bloom\u7d22\u5f15<\/h3>\n<p>\u5f53\u4e3b\u952e\u6709\u591a\u4e2a\u65f6\uff0c\u7d22\u5f15\u9ed8\u8ba4\u4f7f\u7528b-tree\u7d22\u5f15\uff0c\u4f46\u5f31\u70b9\u662f\u5f53\u9996\u4e2a\u952e\u4e0d\u5339\u914d\u65f6\uff0c\u7d22\u5f15\u5c06\u65e0\u6cd5\u88ab\u4f7f\u7528\u3002\u5982\u679c\u9047\u5230\u8fd9\u79cd\u60c5\u51b5\uff0c\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528\u5e03\u9686\u8fc7\u6ee4\u5668\u7d22\u5f15\uff0c\u5373\u4f7f\u9996\u4e2a\u952e\u6761\u4ef6\u4e0d\u5339\u914d\uff0c\u7d22\u5f15\u4ecd\u7136\u53ef\u4ee5\u88ab\u4f7f\u7528\u3002<\/p>\n<p>&nbsp;<\/p>\n<h2>\u65e0\u6cd5\u521b\u5efa\u8fde\u63a5\u7684\u7d22\u5f15<\/h2>\n<p>\u5728PostgreSQL\u4e2d\uff0c\u5f53\u4f7f\u7528\u53cc\u7ad6\u7ebf\u8fde\u63a5\u5217\u65f6\uff0c\u7d22\u5f15\u5c06\u5931\u6548\u3002<br \/>\n\u5728Oracle\u4e2d\uff0c\u53ef\u4ee5\u521b\u5efa\u53cc\u7ad6\u7ebf\u8fde\u63a5\u7684\u7d22\u5f15\u672c\u8eab\uff0c\u4f46\u5728PostgreSQL\u4e2d\u4e0d\u53ef\u4ee5\u3002<br \/>\n\u5728PostgreSQL\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u521b\u5efa\u5355\u4e2a\u6216\u590d\u5408\u7d22\u5f15\uff0c\u5e76\u4f7f\u7528\u884c\u503c\u8868\u8fbe\u5f0f\u6765\u4f7f\u7d22\u5f15\u751f\u6548\u3002<br \/>\n\u4e0d\u80fd\u5c06\u65e5\u671f\u548c\u65f6\u95f4\u5206\u5f00\u8fdb\u884c\u6bd4\u8f83\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">SELECT<\/span> <span class=\"o\">*<\/span> <span class=\"k\">FROM<\/span> <span class=\"n\">TEST<\/span>\r\n<span class=\"k\">WHERE<\/span> \r\n<span class=\"p\">(<\/span><span class=\"n\">UPDATE_DATE<\/span><span class=\"p\">,<\/span> <span class=\"n\">UPDATE_TIME<\/span><span class=\"p\">)<\/span> <span class=\"o\">&gt;<\/span>  <span class=\"p\">(<\/span><span class=\"s1\">'20190218'<\/span><span class=\"p\">,<\/span><span class=\"s1\">'141435'<\/span><span class=\"p\">)<\/span> <span class=\"k\">AND<\/span>\r\n<span class=\"p\">(<\/span><span class=\"n\">UPDATE_DATE<\/span><span class=\"p\">,<\/span> <span class=\"n\">UPDATE_TIME<\/span><span class=\"p\">)<\/span> <span class=\"o\">&lt;=<\/span> <span class=\"p\">(<\/span><span class=\"s1\">'20190219'<\/span><span class=\"p\">,<\/span><span class=\"s1\">'141435'<\/span><span class=\"p\">)<\/span>\r\n<\/code><\/pre>\n<p>\u5c3d\u7ba1Oracle\u7684\u884c\u503c\u8868\u8fbe\u5f0f\u53ea\u652f\u6301\u7b49\u4e8e\uff08=\uff0c\uff01=\uff0cIN\uff09\u8fd0\u7b97\u7b26\uff0c\u4f46PostgreSQL\u8fd8\u652f\u6301\u8303\u56f4\u6761\u4ef6\uff08&gt;\uff0c&lt;=\u7b49\uff09\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0cSQLServer\u81f3\u4eca\u4ecd\u4e0d\u652f\u6301\u884c\u503c\u8868\u8fbe\u5f0f\u3002<\/p>\n<h2>\u7528\u6237\u5b9a\u4e49\u51fd\u6570 h\u00f9 sh\u00f9)<\/h2>\n<h3>NVL\u51fd\u6570<\/h3>\n<p>\u79fb\u690dOracle\u7684NVL\u51fd\u6570\u5230Postgres\u7684Coalesce\u51fd\u6570\u5931\u8d25\u4e86\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"c1\">-- \u578b\u9055\u3044\u306e\u8907\u6570\u767b\u9332\u304c\u5fc5\u8981<\/span>\r\n<span class=\"k\">CREATE<\/span> <span class=\"k\">OR<\/span> <span class=\"k\">REPLACE<\/span> <span class=\"k\">FUNCTION<\/span> <span class=\"n\">nvl<\/span><span class=\"p\">(<\/span><span class=\"n\">expr1<\/span> <span class=\"nb\">text<\/span><span class=\"p\">,<\/span> <span class=\"n\">expr2<\/span> <span class=\"nb\">text<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"k\">RETURNS<\/span> <span class=\"nb\">text<\/span> <span class=\"k\">AS<\/span>\r\n<span class=\"err\">$<\/span><span class=\"n\">BODY<\/span><span class=\"err\">$<\/span>\r\n    <span class=\"k\">SELECT<\/span> <span class=\"n\">coalesce<\/span><span class=\"p\">(<\/span><span class=\"err\">$<\/span><span class=\"mi\">1<\/span><span class=\"p\">,<\/span> <span class=\"err\">$<\/span><span class=\"mi\">2<\/span><span class=\"p\">);<\/span>\r\n<span class=\"err\">$<\/span><span class=\"n\">BODY<\/span><span class=\"err\">$<\/span>\r\n    <span class=\"k\">LANGUAGE<\/span> <span class=\"k\">sql<\/span><span class=\"p\">;<\/span>\r\n    \r\n<span class=\"k\">CREATE<\/span> <span class=\"k\">OR<\/span> <span class=\"k\">REPLACE<\/span> <span class=\"k\">FUNCTION<\/span> <span class=\"n\">nvl<\/span><span class=\"p\">(<\/span><span class=\"n\">expr1<\/span> <span class=\"nb\">date<\/span><span class=\"p\">,<\/span> <span class=\"n\">expr2<\/span> <span class=\"nb\">date<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"k\">RETURNS<\/span> <span class=\"nb\">date<\/span> <span class=\"k\">AS<\/span>\r\n<span class=\"err\">$<\/span><span class=\"n\">BODY<\/span><span class=\"err\">$<\/span>\r\n    <span class=\"k\">SELECT<\/span> <span class=\"n\">coalesce<\/span><span class=\"p\">(<\/span><span class=\"err\">$<\/span><span class=\"mi\">1<\/span><span class=\"p\">,<\/span> <span class=\"err\">$<\/span><span class=\"mi\">2<\/span><span class=\"p\">);<\/span>\r\n<span class=\"err\">$<\/span><span class=\"n\">BODY<\/span><span class=\"err\">$<\/span>\r\n    <span class=\"k\">LANGUAGE<\/span> <span class=\"k\">sql<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"k\">CREATE<\/span> <span class=\"k\">OR<\/span> <span class=\"k\">REPLACE<\/span> <span class=\"k\">FUNCTION<\/span> <span class=\"n\">nvl<\/span><span class=\"p\">(<\/span><span class=\"n\">expr1<\/span> <span class=\"nb\">numeric<\/span><span class=\"p\">,<\/span> <span class=\"n\">expr2<\/span> <span class=\"nb\">integer<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"k\">RETURNS<\/span> <span class=\"nb\">numeric<\/span> <span class=\"k\">AS<\/span>\r\n<span class=\"err\">$<\/span><span class=\"n\">BODY<\/span><span class=\"err\">$<\/span>\r\n    <span class=\"k\">SELECT<\/span> <span class=\"n\">coalesce<\/span><span class=\"p\">(<\/span><span class=\"err\">$<\/span><span class=\"mi\">1<\/span><span class=\"p\">,<\/span> <span class=\"err\">$<\/span><span class=\"mi\">2<\/span><span class=\"p\">);<\/span>\r\n<span class=\"err\">$<\/span><span class=\"n\">BODY<\/span><span class=\"err\">$<\/span>\r\n    <span class=\"k\">LANGUAGE<\/span> <span class=\"k\">sql<\/span><span class=\"p\">;<\/span>  \r\n<\/code><\/pre>\n<h3>\u65e5\u671f\u8ba1\u7b97\u3001\u65f6\u95f4\u8ba1\u7b97<\/h3>\n<p>\u5728PostgreSQL\u4e2d\uff0c\u7531\u4e8e\u6ca1\u6709\u63d0\u4f9bADD_MONTHS\u7b49\u65e5\u671f\u8ba1\u7b97\u548c\u65f6\u95f4\u8ba1\u7b97\u51fd\u6570\uff0c\u6240\u4ee5\u6700\u597d\u662f\u4f7f\u7528\u7528\u6237\u81ea\u5b9a\u4e49\u51fd\u6570\u6765\u521b\u5efa\u6240\u9700\u529f\u80fd\u3002<\/p>\n<p>\u5728\u4f7f\u7528PostgreSQL\u8fdb\u884c\u65e5\u671f\u8ba1\u7b97\u548c\u65f6\u95f4\u8ba1\u7b97\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528interval\u7c7b\u578b\uff0c\u4f8b\u5982&#8217;1 month&#8217;\u7b49\u7b49\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">CREATE<\/span> <span class=\"k\">FUNCTION<\/span> <span class=\"n\">add_months<\/span><span class=\"p\">(<\/span><span class=\"k\">in<\/span> <span class=\"n\">timestamptz<\/span><span class=\"p\">,<\/span> <span class=\"k\">in<\/span> <span class=\"n\">int4<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"k\">RETURNS<\/span> <span class=\"n\">timestamptz<\/span> <span class=\"k\">AS<\/span>\r\n<span class=\"err\">$<\/span><span class=\"n\">BODY<\/span><span class=\"err\">$<\/span>\r\n    <span class=\"k\">SELECT<\/span> <span class=\"err\">$<\/span><span class=\"mi\">1<\/span> <span class=\"o\">+<\/span> <span class=\"err\">$<\/span><span class=\"mi\">2<\/span> <span class=\"o\">*<\/span> <span class=\"n\">interval<\/span> <span class=\"s1\">'1 month'<\/span>\r\n<span class=\"err\">$<\/span><span class=\"n\">BODY<\/span><span class=\"err\">$<\/span>\r\n    <span class=\"k\">LANGUAGE<\/span> <span class=\"s1\">'sql'<\/span>\r\n<\/code><\/pre>\n<h3>\u52a8\u6001\u67e5\u8be2<\/h3>\n<p>\u4ee5\u300cEXECUTE sql;\u300d\u7684\u65b9\u5f0f\u6267\u884c\u52a8\u6001\u67e5\u8be2\u3002\u5e76\u4ee5\u300cRETURN QUERY\u300d\u7684\u65b9\u5f0f\u8fd4\u56de\u8868\u683c\u3002<br \/>\nPostgreSQL\u5907\u6ce8- \u5b58\u50a8\u8fc7\u7a0b<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">CREATE<\/span> <span class=\"k\">FUNCTION<\/span> <span class=\"n\">func_FugaTable<\/span><span class=\"p\">(<\/span><span class=\"k\">key<\/span> <span class=\"nb\">text<\/span><span class=\"p\">)<\/span>\r\n<span class=\"k\">RETURNS<\/span> <span class=\"k\">TABLE<\/span><span class=\"p\">(<\/span><span class=\"n\">col1<\/span> <span class=\"nb\">text<\/span><span class=\"p\">,<\/span> <span class=\"n\">col2<\/span> <span class=\"nb\">text<\/span><span class=\"p\">)<\/span> <span class=\"k\">AS<\/span> <span class=\"err\">$$<\/span>\r\n<span class=\"k\">DECLARE<\/span>\r\n    <span class=\"k\">sql<\/span> <span class=\"nb\">TEXT<\/span><span class=\"p\">;<\/span>\r\n<span class=\"k\">BEGIN<\/span>\r\n    <span class=\"k\">sql<\/span> <span class=\"p\">:<\/span><span class=\"o\">=<\/span> <span class=\"s1\">'SELECT id::text, name::text FROM t_Fuga WHERE id = <\/span><span class=\"se\">''<\/span><span class=\"s1\">'<\/span> <span class=\"o\">||<\/span> <span class=\"k\">key<\/span> <span class=\"o\">||<\/span> <span class=\"s1\">'<\/span><span class=\"se\">''<\/span><span class=\"s1\">'<\/span><span class=\"p\">;<\/span>\r\n    <span class=\"k\">RETURN<\/span> <span class=\"n\">QUERY<\/span> <span class=\"k\">EXECUTE<\/span> <span class=\"k\">sql<\/span><span class=\"p\">;<\/span>\r\n<span class=\"k\">END<\/span><span class=\"p\">;<\/span>\r\n<span class=\"err\">$$<\/span> <span class=\"k\">LANGUAGE<\/span> <span class=\"n\">plpgsql<\/span><span class=\"p\">;<\/span>\r\n<\/code><\/pre>\n<h3>\u4e09\u89d2\u51fd\u6570<\/h3>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Oracle\u3067\u306f\u30c8\u30ea\u30ac\u30fc\u5358\u4f53\u3067\u3059\u3093\u3060\u304c\u3001PostgreSQL\u3067\u306f\u30c8\u30ea\u30ac\u30fc\u3068\u30c8\u30ea\u30ac\u30fc\u5c02\u7528\u95a2\u6570\u306e\u30bb\u30c3\u30c8\u3068\u306a\u3063\u3066\u3044\u308b\u3002<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Oracle \u306f IN\u3001OUT\u3001INOUT \u3068\u3044\u3046\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u95a2\u6570\u306b\u6e21\u3059\u3053\u3068\u304c\u3067\u304d\u3001PostgreSQL\u306f IN \u306e\u307f\u3068\u306a\u3063\u3066\u3044\u308b\u3002<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">35.11. Oracle PL\/SQL\u304b\u3089\u306e\u79fb\u690d<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">PostgreSQL\u3067\u306fTRIGGER\u306eREPLACE\u304c\u5b58\u5728\u3057\u306a\u3044\u305f\u3081\u3001\u66f4\u65b0\u306e\u969b\u306fTRIGGER\u306e\u524a\u9664\u304c\u5fc5\u8981\u306b\u306a\u308b\u3002<\/ul>\n<p>\u4ecb\u7ecd\u521b\u5efa\u548c\u8c03\u7528\u4e09\u89d2\u51fd\u6570\u7684\u65b9\u6cd5\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"c1\">-- Insert Before\u30c8\u30ea\u30ac<\/span>\r\n<span class=\"k\">CREATE<\/span> <span class=\"k\">OR<\/span> <span class=\"k\">REPLACE<\/span> <span class=\"k\">TRIGGER<\/span> <span class=\"n\">TBI_MSTW000010<\/span>\r\n<span class=\"k\">BEFORE<\/span> <span class=\"k\">INSERT<\/span> \r\n<span class=\"k\">ON<\/span> <span class=\"n\">MSTW012010<\/span>\r\n<span class=\"k\">REFERENCING<\/span> <span class=\"k\">OLD<\/span> <span class=\"k\">AS<\/span> <span class=\"k\">OLD<\/span> <span class=\"k\">NEW<\/span> <span class=\"k\">AS<\/span> <span class=\"k\">NEW<\/span>\r\n<span class=\"k\">FOR<\/span> <span class=\"k\">EACH<\/span> <span class=\"k\">ROW<\/span> \r\n<span class=\"k\">BEGIN<\/span>\r\n    <span class=\"p\">:<\/span><span class=\"k\">new<\/span><span class=\"p\">.<\/span><span class=\"n\">CA<\/span> <span class=\"p\">:<\/span><span class=\"o\">=<\/span> <span class=\"n\">TO_CHAR<\/span><span class=\"p\">(<\/span><span class=\"n\">SYSDATE<\/span><span class=\"p\">,<\/span><span class=\"s1\">'YYYYMMDD'<\/span><span class=\"p\">);<\/span>\r\n    <span class=\"p\">:<\/span><span class=\"k\">new<\/span><span class=\"p\">.<\/span><span class=\"n\">CB<\/span> <span class=\"p\">:<\/span><span class=\"o\">=<\/span> <span class=\"n\">TO_CHAR<\/span><span class=\"p\">(<\/span><span class=\"n\">SYSDATE<\/span><span class=\"p\">,<\/span><span class=\"s1\">'HH24MMSS'<\/span><span class=\"p\">);<\/span>\r\n<span class=\"k\">END<\/span><span class=\"p\">;<\/span>\r\n \r\n<span class=\"c1\">-- Update Before\u30c8\u30ea\u30ac<\/span>\r\n<span class=\"k\">CREATE<\/span> <span class=\"k\">OR<\/span> <span class=\"k\">REPLACE<\/span> <span class=\"k\">TRIGGER<\/span> <span class=\"n\">TBU_MSTW000010<\/span>\r\n<span class=\"k\">BEFORE<\/span> <span class=\"k\">UPDATE<\/span> \r\n<span class=\"k\">ON<\/span> <span class=\"n\">MSTW000010<\/span>\r\n<span class=\"k\">REFERENCING<\/span> <span class=\"k\">OLD<\/span> <span class=\"k\">AS<\/span> <span class=\"k\">OLD<\/span> <span class=\"k\">NEW<\/span> <span class=\"k\">AS<\/span> <span class=\"k\">NEW<\/span>\r\n<span class=\"k\">FOR<\/span> <span class=\"k\">EACH<\/span> <span class=\"k\">ROW<\/span> \r\n<span class=\"k\">BEGIN<\/span>\r\n    <span class=\"p\">:<\/span><span class=\"k\">new<\/span><span class=\"p\">.<\/span><span class=\"n\">CC<\/span> <span class=\"p\">:<\/span><span class=\"o\">=<\/span> <span class=\"n\">TO_CHAR<\/span><span class=\"p\">(<\/span><span class=\"n\">SYSDATE<\/span><span class=\"p\">,<\/span><span class=\"s1\">'YYYYMMDD'<\/span><span class=\"p\">);<\/span>\r\n    <span class=\"p\">:<\/span><span class=\"k\">new<\/span><span class=\"p\">.<\/span><span class=\"n\">CD<\/span> <span class=\"p\">:<\/span><span class=\"o\">=<\/span> <span class=\"n\">TO_CHAR<\/span><span class=\"p\">(<\/span><span class=\"n\">SYSDATE<\/span><span class=\"p\">,<\/span><span class=\"s1\">'HHMMSS'<\/span><span class=\"p\">);<\/span>\r\n<span class=\"k\">END<\/span><span class=\"p\">;<\/span>\r\n<\/code><\/pre>\n<p>\u5728PostgreSQL\u4e2d\uff0c\u9700\u8981\u5355\u72ec\u521b\u5efa\u4e00\u4e2a\u53ea\u7528\u4e8e\u89e6\u53d1\u5668\u7684\u51fd\u6570\uff08\u65e0\u53c2\u6570\uff09\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"c1\">-- \u30c8\u30ea\u30ac\u95a2\u6570<\/span>\r\n<span class=\"k\">CREATE<\/span> <span class=\"k\">OR<\/span> <span class=\"k\">REPLACE<\/span> <span class=\"k\">FUNCTION<\/span> <span class=\"n\">db_test<\/span><span class=\"p\">.<\/span><span class=\"nv\">\"MSTW000010_insert\"<\/span><span class=\"p\">()<\/span> <span class=\"k\">RETURNS<\/span> <span class=\"k\">trigger<\/span> <span class=\"k\">AS<\/span>\r\n<span class=\"err\">$<\/span><span class=\"n\">BODY<\/span><span class=\"err\">$<\/span>\r\n<span class=\"k\">BEGIN<\/span>\r\n    <span class=\"k\">NEW<\/span><span class=\"p\">.<\/span><span class=\"n\">CA<\/span> <span class=\"p\">:<\/span><span class=\"o\">=<\/span> <span class=\"n\">to_char<\/span><span class=\"p\">(<\/span><span class=\"k\">current_timestamp<\/span><span class=\"p\">,<\/span><span class=\"s1\">'YYYYMMDD'<\/span><span class=\"p\">);<\/span>\r\n    <span class=\"k\">NEW<\/span><span class=\"p\">.<\/span><span class=\"n\">CB<\/span> <span class=\"p\">:<\/span><span class=\"o\">=<\/span> <span class=\"n\">to_char<\/span><span class=\"p\">(<\/span><span class=\"k\">current_timestamp<\/span><span class=\"p\">,<\/span><span class=\"s1\">'HH24MISS'<\/span><span class=\"p\">);<\/span>\r\n<span class=\"k\">RETURN<\/span> <span class=\"k\">NEW<\/span><span class=\"p\">;<\/span>\r\n<span class=\"k\">END<\/span><span class=\"p\">;<\/span>\r\n<span class=\"err\">$<\/span><span class=\"n\">BODY<\/span><span class=\"err\">$<\/span>\r\n    <span class=\"k\">LANGUAGE<\/span> <span class=\"n\">plpgsql<\/span> <span class=\"k\">VOLATILE<\/span>\r\n    <span class=\"n\">COST<\/span> <span class=\"mi\">100<\/span><span class=\"p\">;<\/span>\r\n    <span class=\"k\">ALTER<\/span> <span class=\"k\">FUNCTION<\/span> <span class=\"n\">db_test<\/span><span class=\"p\">.<\/span><span class=\"nv\">\"MSTW000010_insert\"<\/span><span class=\"p\">()<\/span>\r\n    <span class=\"k\">OWNER<\/span> <span class=\"k\">TO<\/span> <span class=\"n\">postgres<\/span><span class=\"p\">;<\/span>\r\n \r\n<span class=\"k\">CREATE<\/span> <span class=\"k\">OR<\/span> <span class=\"k\">REPLACE<\/span> <span class=\"k\">FUNCTION<\/span> <span class=\"n\">db_test<\/span><span class=\"p\">.<\/span><span class=\"nv\">\"MSTW000010_update\"<\/span><span class=\"p\">()<\/span> <span class=\"k\">RETURNS<\/span> <span class=\"k\">trigger<\/span> <span class=\"k\">AS<\/span>\r\n<span class=\"err\">$<\/span><span class=\"n\">BODY<\/span><span class=\"err\">$<\/span>\r\n<span class=\"k\">BEGIN<\/span>\r\n    <span class=\"k\">NEW<\/span><span class=\"p\">.<\/span><span class=\"n\">CC<\/span> <span class=\"p\">:<\/span><span class=\"o\">=<\/span> <span class=\"n\">to_char<\/span><span class=\"p\">(<\/span><span class=\"k\">current_timestamp<\/span><span class=\"p\">,<\/span><span class=\"s1\">'YYYYMMDD'<\/span><span class=\"p\">);<\/span>\r\n    <span class=\"k\">NEW<\/span><span class=\"p\">.<\/span><span class=\"n\">CD<\/span> <span class=\"p\">:<\/span><span class=\"o\">=<\/span> <span class=\"n\">to_char<\/span><span class=\"p\">(<\/span><span class=\"k\">current_timestamp<\/span><span class=\"p\">,<\/span><span class=\"s1\">'HHMISS'<\/span><span class=\"p\">);<\/span>\r\n<span class=\"k\">RETURN<\/span> <span class=\"k\">NEW<\/span><span class=\"p\">;<\/span>\r\n<span class=\"k\">END<\/span><span class=\"p\">;<\/span>\r\n<span class=\"err\">$<\/span><span class=\"n\">BODY<\/span><span class=\"err\">$<\/span>\r\n<span class=\"k\">LANGUAGE<\/span> <span class=\"n\">plpgsql<\/span> <span class=\"k\">VOLATILE<\/span>\r\n<span class=\"n\">COST<\/span> <span class=\"mi\">100<\/span><span class=\"p\">;<\/span>\r\n<span class=\"k\">ALTER<\/span> <span class=\"k\">FUNCTION<\/span> <span class=\"n\">db_test<\/span><span class=\"p\">.<\/span><span class=\"nv\">\"MSTW000010_update\"<\/span><span class=\"p\">()<\/span>\r\n<span class=\"k\">OWNER<\/span> <span class=\"k\">TO<\/span> <span class=\"n\">postgres<\/span><span class=\"p\">;<\/span>\r\n \r\n<span class=\"c1\">-- Insert Before \u30c8\u30ea\u30ac<\/span>\r\n<span class=\"k\">CREATE<\/span> <span class=\"k\">TRIGGER<\/span> <span class=\"nv\">\"TBI_MSTW000010\"<\/span>\r\n<span class=\"k\">BEFORE<\/span> <span class=\"k\">INSERT<\/span>\r\n<span class=\"k\">ON<\/span> <span class=\"n\">db_test<\/span><span class=\"p\">.<\/span><span class=\"n\">mstw000010<\/span>\r\n<span class=\"k\">FOR<\/span> <span class=\"k\">EACH<\/span> <span class=\"k\">ROW<\/span>\r\n<span class=\"k\">EXECUTE<\/span> <span class=\"k\">PROCEDURE<\/span> <span class=\"n\">db_test<\/span><span class=\"p\">.<\/span><span class=\"nv\">\"MSTW000010_insert\"<\/span><span class=\"p\">();<\/span>\r\n \r\n<span class=\"c1\">-- Update Before \u30c8\u30ea\u30ac<\/span>\r\n<span class=\"k\">CREATE<\/span> <span class=\"k\">TRIGGER<\/span> <span class=\"nv\">\"TBU_MSTW000010\"<\/span>\r\n<span class=\"k\">BEFORE<\/span> <span class=\"k\">UPDATE<\/span>\r\n<span class=\"k\">ON<\/span> <span class=\"n\">db_test<\/span><span class=\"p\">.<\/span><span class=\"n\">mstw000010<\/span>\r\n<span class=\"k\">FOR<\/span> <span class=\"k\">EACH<\/span> <span class=\"k\">ROW<\/span>\r\n<span class=\"k\">EXECUTE<\/span> <span class=\"k\">PROCEDURE<\/span> <span class=\"n\">db_test<\/span><span class=\"p\">.<\/span><span class=\"nv\">\"MSTW000010_update\"<\/span><span class=\"p\">();<\/span>\r\n<\/code><\/pre>\n<h3>\u81ea\u6211\u7ea6\u675f\u578b\u4ea4\u6613<\/h3>\n<p>\u81ea\u5f8b\u578b\u4ea4\u6613\u662f\u7531\u6b63\u5728\u8fdb\u884c\u7684\u4e3b\u8981\u4ea4\u6613\u542f\u52a8\u7684\u72ec\u7acb\uff08\u81ea\u4e3b\uff09\u4ea4\u6613\u3002\u4e3b\u8981\u4ea4\u6613\u548c\u81ea\u5f8b\u578b\u4ea4\u6613\u7684\u63d0\u4ea4\u56de\u6eda\u64cd\u4f5c\u4e92\u4e0d\u5f71\u54cd\uff0c\u5b8c\u5168\u72ec\u7acb\u7684\u4e0d\u540c\u4ea4\u6613\u3002<\/p>\n<p>Oracle\u53ef\u4ee5\u4f7f\u7528\u81ea\u52a8\u4e8b\u52a1\uff0c\u4f46\u662fPostgreSQL\u4e0d\u80fd\u4f7f\u7528\u3002<\/p>\n<p>\u901a\u8fc7\u4f7f\u7528dblink\u7b49\u5de5\u5177\u53ef\u4ee5\u5b9e\u73b0\u8fd9\u4e00\u529f\u80fd\u3002<br \/>\n\u3010PostgreSQL\u3011\u53ef\u4ee5\u5728SELECT\u4e2d\u66f4\u65b0\u5176\u4ed6\u8868\u3002<\/p>\n<h3>\u5176\u4ed6(\u552f\u4e00\u7684\u9009\u62e9)<\/h3>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">PostgreSQL\u306e\u5834\u5408\u3001\u30c6\u30fc\u30d6\u30eb\u306e\u30ab\u30e9\u30e0\u540d\u306b\u4e88\u7d04\u8a9e(\u4f8b \u201cDO\u201d)\u304c\u3042\u308b\u3068\u305d\u306e\u307e\u307e\u3067\u306f\u4f7f\u3048\u306a\u3044\u3002\u4e8c\u91cd\u5f15\u7528\u7b26&#8221;do&#8221;\u3092\u4ed8\u4e0e\u3059\u308c\u3070\u4f7f\u3048\u308b<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">PostgreSQL\u306e\u5834\u5408\u3001SELECT\u3067\u5225\u540d\u306b\u3057\u305f\u30ab\u30e9\u30e0\u540d\u3092ORDER BY\u53e5\u3067\u6307\u5b9a\u3067\u304d\u306a\u3044\u305f\u3081\u3001\u4e00\u6bb5\u4e0a\u306bSELECT\u3092\u8ffd\u52a0\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">PostgreSQL\u306e\u5834\u5408\u3001MAX\u5024\u53d6\u5f97\u3067ORDER BY\u53e5\u304c\u3042\u308b\u3068\u30a8\u30e9\u30fc\u306b\u306a\u308b\u3002\u305d\u3082\u305d\u3082ORDER BY\u53e5\u304c\u4e0d\u8981<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">PostgreSQL\u306e\u5834\u5408\u3001FORMAT\u95a2\u6570\u3067\u306f\u30d1\u30fc\u30bb\u30f3\u30c8(%)\u3092\u30a8\u30b9\u30b1\u30fc\u30d7\u30672\u3064(%%)\u306b\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">PostgreSQL\u306e\u5834\u5408\u3001FROM\u3068\u30c6\u30fc\u30d6\u30eb\u540d\u306e\u533a\u5207\u308a\u304c\u5168\u89d2\u7a7a\u767d\u3060\u3068\u30a8\u30e9\u30fc\u306b\u306a\u308b\u306e\u3067\u534a\u89d2\u7a7a\u767d\u306b\u3059\u308b\u3002<\/ul>\n<h1>PL\/SQL\u8fc1\u79fb<\/h1>\n<p>\u5c06PL\/SQL\u8fc1\u79fb\u5230PostgreSQL-\u8fc1\u79fb\u6982\u8ff0\/\u8fc1\u79fb\u793a\u4f8b\u3002<\/p>\n<h1>Oracle\u5230PostgresSQL\u7684\u8fc1\u79fb\u5de5\u5177<\/h1>\n<h2>\u8f6c\u79fb\u652f\u63f4\u5de5\u5177\uff08ora2pg\uff09\u3002<\/h2>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">ora2pg<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u3053\u306eora2pg\u304c\u3059\u3054\u3044\uff01Oracle\u306e\u30b9\u30c8\u30a2\u30c9\u30d7\u30ed\u30b7\u30fc\u30b8\u30e32\u7a2e\u3092PostgreSQL\u306b\u79fb\u884c\u3057\u3066\u307f\u305f\uff01<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">how to install ora2pg on windows 7?<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Oracle\u304b\u3089Postgresql\u3078\u79fb\u884c\u3059\u308b<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9\u30df\u30c9\u30eb\u30a6\u30a7\u30a2\u3078\u306e\u79fb\u884c\u306e\u305f\u3081\u306e \u79fb\u690d\u958b\u767a\u652f\u63f4\u30c4\u30fc\u30eb\u306e\u8a55\u4fa1 pdf<\/ul>\n<p>\u8981\u8fd0\u884cora2pg\uff0c\u9700\u8981\u4f7f\u7528Perl5\u3002<\/p>\n<ul class=\"post-ul\">Windows \u3067\u4f7f\u7528\u3067\u304d\u308b\u30d5\u30ea\u30fc\u306e Perl\u5b9f\u884c\u74b0\u5883 Strawberry Perl<\/ul>\n<h2>\u7532\u9aa8\u6587\u4e92\u63db\u51fd\u5f0f\u5eab(oraface)\u3002<\/h2>\n<p>\u53ea\u8981\u4ece\u6e90\u4ee3\u7801\u7f16\u8bd1\uff0c\u95e8\u69db\u5c31\u4f1a\u5f88\u9ad8\uff08\u56e0\u4e3a\u6709\u7528\u6237\u63d0\u4f9b\u9884\u7f16\u8bd1\u7248\u672c\uff0c\u53ef\u4ee5\u4eab\u53d7\u5230\u597d\u5904\uff09\uff0c\u6709\u8d77\u521d\u5c31\u53ef\u4f7f\u7528\u7684\u73af\u5883\u5c31\u5f88\u4fbf\u5229\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Orafce \u30db\u30fc\u30e0\u30da\u30fc\u30b8\u3078\u3088\u3046\u3053\u305d<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">PGECons \u7d44\u307f\u8fbc\u307f\u95a2\u6570\u79fb\u884c\u8abf\u67fb\u7de8<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">orafce\u62e1\u5f35\u30e2\u30b8\u30e5\u30fc\u30eb\u306e\u7d39\u4ecb<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">PostgreSQL 10\u300111\u3001\u304a\u3088\u307312\u7528\u306eorafce3.8\u7528\u306e\u30d7\u30ea\u30b3\u30f3\u30d1\u30a4\u30eb\u6e08\u307f\u30e9\u30a4\u30d6\u30e9\u30ea<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">Windows 10 + PostgreSQL 10.10 \u306b orafce \u3092\u7d44\u8fbc\u3080<\/ul>\n<h2>\u6570\u636e\u5e93\u8bed\u6cd5\u5dee\u5f02<\/h2>\n<p>\u8fd9\u662f\u7531NTT\u5f00\u53d1\u7684\u5f00\u6e90\u5de5\u5177\u3002\u5b83\u652f\u6301Ora2Pg\u4e0d\u652f\u6301\u7684SELECT\u8bed\u53e5\u3001UPDATE\u8bed\u53e5\u7b49\u6570\u636e\u64cd\u4f5c\u7684SQL\u3002\u5b83\u8fd8\u53ef\u4ee5\u7528\u4e8e\u5d4c\u5165\u5728\u7a0b\u5e8f\u8bed\u8a00\u4e2d\u4f5c\u4e3a\u5b57\u7b26\u4e32\u5b57\u9762\u91cf\u7684SQL\u4ee3\u7801\u3002\u7136\u800c\uff0c\u5b9e\u9645\u7684\u4fee\u6b63\u4ecd\u7136\u9700\u8981\u4eba\u5de5\u8fdb\u884c\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">AP\u3092PostgreSQL\u3078\u79fb\u690d\u3059\u308b\u969b\u306e\u5f71\u97ff\u7b87\u6240\u3092\u691c\u51fa\u3059\u308b\u30c4\u30fc\u30eb<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u5f71\u97ff\u7b87\u6240\u62bd\u51fa\u4f5c\u696d\u306e\u77ed\u7e2e\u5316<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u62bd\u51fa\u306e\u7db2\u7f85\u6027\u5411\u4e0a\u3001\u54c1\u8cea\u306e\u5747\u2f00\u5316<\/ul>\n<h2>EDB Postgres\uff08\u517c\u5bb9Oracle\u7684\u9ad8\u5ea6\u4e92\u63db\u6027\u7684PostgreSQL\uff09<\/h2>\n<p>EDB Postgres\uff08\u4e00\u4e2a\u524d\u8eab\u662fPostgres Plus Advanced Server\u7684\u4ea7\u54c1\uff09\u5177\u6709\u4e0eOracle Database\u9ad8\u5ea6\u517c\u5bb9\u7684\u7279\u6027\uff0c\u652f\u6301\u4e0eOracle Database\u76f8\u540c\u7684SQL\u8bed\u6cd5\u3001\u51fd\u6570\u548c\u8fc7\u7a0b\u3002<\/p>\n<div>\n<div class=\"post-table\">Oracle\u3067\u4f7f\u7528\u3057\u3066\u3044\u308bSQLPostgreSQL\u3067\u306e\u5bfe\u5fdcEDB Postgres\u3067\u306e\u5bfe\u5fdc\u5916\u90e8\u7d50\u5408\u6f14\u7b97\u5b50(+)\u5916\u90e8\u7d50\u5408OUTER JOIN\u5bfe\u5fdc\u65e5\u4ed8\u3001\u6642\u523b \u65e5\u4ed8\u95a2\u6570\u3084\u66f8\u5f0f\u307b\u307c\u3059\u3079\u3066\u5909\u66f4\u304c\u5fc5\u8981\u4e00\u90e8\u4e92\u63db\u52d5\u4f5c\u306b\u5bfe\u5fdc\u6761\u4ef6\u5206\u5c90\u95a2\u6570 nvl\u306a\u3069<br \/>\n\u5bfe\u5fdc\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u5185\u306eROLLBACK\u6319\u52d5\u30fb\u5bfe\u5fdc\u4e0d\u53efOracle\u4e92\u63db\u30e2\u30fc\u30c9\u3092\u9078\u629e\u53ef\u80fdFROM\u53e5\u5185\u306e\u30b5\u30d6\u30af\u30a8\u30ea\u3067\u5225\u540d\u4e0d\u8981\u30fbFROM\u53e5\u5185\u30b5\u30d6\u30af\u30a8\u30ea\u306e\u5225\u540d\u5fc5\u9808\u5bfe\u5fdc\u96c6\u5408\u6f14\u7b97\u5b50 minus\u30fb\u96c6\u5408\u6f14\u7b97\u5b50 except\u5bfe\u5fdcNULL\u3068\u7a7a\u6587\u5b57\u306e\u533a\u5225\u304c\u306a\u3044\u5bfe\u5fdc\u4e0d\u53ef\u4e00\u90e8\u4e92\u63db\u52d5\u4f5c\u3092\u8a2d\u5b9a\u53ef\u80fd\u30fbROWNUM<br \/>\n\u30fbMERGE\u6587<br \/>\n\u30fboid\u307e\u305f\u306fROWNUM\u3067\u5bfe\u5fdc\uff08\u5236\u9650\u3042\u308a\uff09<br \/>\n\u30fbINSERT \u30fb\u30fb\u30fbON CONFRICT<\/div>\n<\/div>\n<p>\u4ee5\u4e0b\u63d0\u4f9b\u4e86\u517c\u5bb9\u6027\u5b9e\u7528\u5de5\u5177\u3002<\/p>\n<div>\n<div class=\"post-table\">Oracle Database (\u30b3\u30de\u30f3\u30c9)Postgres Plus (\u30b3\u30de\u30f3\u30c9)SQL*Plus (sqlplus)EDB*Plus (edbplus.sh)SQL*Loader (sqlldr)EDB*Loader (edbldr)Wrap (wrap)EDB*Wrap (edbwrap)<\/div>\n<\/div>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">PostgresPlus Advanced Server \u306e Oracle Database \u4e92\u63db\u6a5f\u80fd\u691c\u8a3c &#8211; SlideShare<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Vol.3\u3000Postgres Plus Advanced Server\uff08\u4f53\u9a13\u7de81\uff09<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Vol.4\u3000Postgres Plus Advanced Server\uff08\u4f53\u9a13\u7de82\uff09<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u5546\u7528DB\u304b\u3089PostgreSQL\u3078\u3000\u307e\u305a\u77e5\u3063\u3066\u304a\u3044\u3066\u6b32\u3057\u3044\u307e\u3068\u3081 &#8211; SlideShare<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">Oratopostgres-hiroshima &#8211; SlideShare<\/ul>\n<h1>\u8bf7\u6839\u636e\u4ee5\u4e0b\u5185\u5bb9\u8fdb\u884c\u4e2d\u56fd\u672c\u571f\u5316\u7684\u6539\u5199\uff1a<\/h1>\n<p>\u501f\u9274<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">PostgreSQL select \u3067\u6587\u5b57\u5217\u3092\u9023\u7d50\u3059\u308b\u3068\u304d\u306e\u6ce8\u610f\u70b9<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">PostgreSQL\u3067\u6587\u5b57\u5217\u306e\u7d50\u5408(||)\u3092\u3059\u308b\u3068\u52dd\u624b\u306b\u30c8\u30ea\u30e0\u3055\u308c\u308b(\u56fa\u5b9a\u9577\u6587\u5b57\u5217\u3092\u751f\u6210\u3059\u308b\u969b\u306b\u306f\u6ce8\u610f)<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">PostgreSQL\u3068Oracle\u306b\u3088\u308b\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u76f8\u4e92\u79fb\u884c\u30de\u30cb\u30e5\u30a2\u30eb<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Oracle PL\/SQL \u304b\u3089\u306e\u79fb\u690d<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Oracle Database\u3068PostgreSQL\u306e\u9055\u3044<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Oracle\u3068PostgreSQL\u306e\u9055\u3044 PostgreSQL\u3067\u306f\u3001null\u3068\u7a7a\u6587\u5b57\u306f\u533a\u5225\u3055\u308c\u307e\u3059\u3002<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">[Oracle][PostgreSQL]Date\u578b\u306e\u9055\u3044<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Oracle PL\/SQL \u304b\u3089 PostgreSQL PL\/pgSQL \u3078\u306e\u79fb\u690d\u306e\u6ce8\u610f\u30e1\u30e2 PostgreSQL \u3067\u306f\u95a2\u6570\u3092\u30aa\u30fc\u30d0\u30fc\u30ed\u30fc\u30c9\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">PostgreSQL \u306e SELECT\u53e5\u3067 Null\u6587\u5b57\u5217\u3092\u9023\u7d50\u3059\u308b\u65b9\u6cd5<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">PostgreSQL\u306eSQL<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">PostgreSQL\u3067\u30ab\u30e9\u30e0\u3092\u8ffd\u52a0\u3059\u308b\u969b\u306bdefault\u5024\u3092\u8a2d\u5b9a\u3059\u308b\u65b9\u6cd5<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">PostgreSQL\u3067\u81ea\u52d5\u7684\u306b\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u304c\u751f\u6210\u3055\u308c\u308b\u6761\u4ef6<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">PostgreSQL\u3068MySQL\u306f\u3069\u3061\u3089\u304b\u306b\u660e\u78ba\u306a\u512a\u4f4d\u6027\u304c\u3042\u308a\u307e\u3059\u304b\u3001\u3068\u3044\u3046\u306e\u8cea\u554f\u30fb\u56de\u7b54<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30c6\u30fc\u30d6\u30eb\u540d\u3084\u30ab\u30e9\u30e0\u540d\u306bSQL\u306e\u4e88\u7d04\u8a9e\u3092\u4f7f\u3046\u65b9\u6cd5<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Oracle\u21d4Postgresql\u306e\u7d44\u307f\u8fbc\u307f\u30c7\u30fc\u30bf\u578b\u5bfe\u5fdc\u8868<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">PostgreSQL\u30c1\u30e5\u30fc\u30cb\u30f3\u30b0\u5b9f\u8df5\u30c6\u30af\u30cb\u30c3\u30af(DISTINCT\u3088\u308aGROUP BY\u306e\u65b9\u304c\u901f\u3044)<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">PostgreSQL Internals (1) for PostgreSQL 9.6 (Japanese) &#8211; SlideShare<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">WHERE\u53e5\u3067\u30a8\u30a4\u30ea\u30a2\u30b9\u3092\u4f7f\u3046<\/ul>\n<h1>\u6700\u540e<\/h1>\n<p>\u8fd8\u6709\u5176\u4ed6\u7684\u673a\u4f1a\u6765\u8c08\u8bba\u5173\u4e8e\u5bfc\u5165\u3001\u5bfc\u51fa\u3001\u8c03\u6574\u548c\u5907\u4efd\u4e0e\u6062\u590d\u7b49\u7b49\u7684\u4e8b\u9879\u3002\u6211\u5728\u53e6\u4e00\u7bc7\u6587\u7ae0\u4e2d\u8fdb\u884c\u4e86\u63cf\u8ff0\uff0c\u73b0\u5728\u63d0\u4f9b\u94fe\u63a5\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30a8\u30af\u30b9\u30dd\u30fc\u30c8\u3084\u30a4\u30f3\u30dd\u30fc\u30c8<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30c1\u30e5\u30fc\u30cb\u30f3\u30b0<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u3010PostgreSQL 9.6\u3011\u6307\u5b9a\u3057\u305f\u6642\u9593\u307e\u3067\u30ea\u30ab\u30d0\u30ea\u3059\u308bPITR<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u3010PostgreSQL 12\u3011\u6307\u5b9a\u3057\u305f\u6642\u9593\u307e\u3067\u30ea\u30ab\u30d0\u30ea\u3059\u308bPITR<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u3010PostgreSQL\u3011WSH\/VBScript\u3067psql\u3092\u4f7f\u7528\u3059\u308b<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u3010PostgreSQL\u3011psql\u306eCOPY\u30b3\u30de\u30f3\u30c9\u306b\u5909\u6570\u3067\u7d76\u5bfe\u30d1\u30b9\u3092\u6e21\u3059<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u3010PostgreSQL\u3011psql\u306eCOPY\u30b3\u30de\u30f3\u30c9\u306b\u3088\u308bCSV\u30a4\u30f3\u30dd\u30fc\u30c8\u3067\u91cd\u8907\u30a8\u30e9\u30fc\u3092\u56de\u907f\u3059\u308b<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u3010PostgreSQL\u3011\u30c6\u30fc\u30d6\u30eb\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u304c\u58ca\u308c\u305f\u8a71<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">PostgreSQL\u30c6\u30fc\u30d6\u30eb\u306e\u4f5c\u6210\u65e5\u6642\u3068\u66f4\u65b0\u65e5\u6642\u306e\u53d6\u5f97\u306b\u3064\u3044\u3066<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">PostgreSQL\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306e\u4f5c\u6210\u65e5\u6642\u3068\u66f4\u65b0\u65e5\u6642\u306e\u53d6\u5f97\u306b\u3064\u3044\u3066<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u3010PostgreSQL\u3011psql\u306e\u30b9\u30af\u30ea\u30d7\u30c8\u30a8\u30e9\u30fc\u3092\u7121\u8996\u3057\u7d9a\u884c\u3055\u305b\u308b<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u3010PostgreSQL\u3011SELECT\u5185\u3067\u4ed6\u306e\u30c6\u30fc\u30d6\u30eb\u3092\u66f4\u65b0\u3059\u308b<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u3010PostgreSQL\u3011\u30c8\u30ea\u30ac\u30fc\u3092\u4f7f\u7528\u3057\u3066\u56de\u6570\u30c1\u30a7\u30c3\u30af\u3057\u4f8b\u5916\u30a8\u30e9\u30fc\u3068\u3059\u308b<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u3010PostgreSQL\u3011\u521d\u56de\u30af\u30a8\u30ea\u30fc\u304c\u9045\u3044<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u3010PostgreSQL 9.6\u219212\u3011pg_upgrade \u306b\u3088\u308b\u30a2\u30c3\u30d7\u30b0\u30ec\u30fc\u30c9\u624b\u9806<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u3010PostgreSQL 12\u219214\u3011pg_upgrade \u306b\u3088\u308b\u30a2\u30c3\u30d7\u30b0\u30ec\u30fc\u30c9\u624b\u9806<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u9996\u5148 \u8fd9\u662f2019\u5e74PostgreSQL Advent Calendar\u7684\u7b2c\u516b\u5929\u7684\u6587\u7ae0\u3002 \u8fd9\u7bc7\u6587\u7ae0\u662f\u6211\u81ea\u5df1\u5728\u4ece [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-41465","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u6709\u5173\u4eceOracle\u8fc1\u79fb\u5230PostgreSQL\u7684\u95ee\u9898 - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/\u6709\u5173\u4eceoracle\u8fc1\u79fb\u5230postgresql\u7684\u95ee\u9898\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" 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