{"id":42126,"date":"2023-01-21T04:44:21","date_gmt":"2022-12-11T16:41:07","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/postgresql-15%e5%8d%b3%e5%b0%86%e6%8e%a8%e5%87%ba%ef%bc%883%ef%bc%89psql%e7%9a%84%e6%94%b9%e8%bf%9b%e3%80%82\/"},"modified":"2024-04-29T10:43:46","modified_gmt":"2024-04-29T02:43:46","slug":"postgresql-15%e5%8d%b3%e5%b0%86%e6%8e%a8%e5%87%ba%ef%bc%883%ef%bc%89psql%e7%9a%84%e6%94%b9%e8%bf%9b%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/postgresql-15%e5%8d%b3%e5%b0%86%e6%8e%a8%e5%87%ba%ef%bc%883%ef%bc%89psql%e7%9a%84%e6%94%b9%e8%bf%9b%e3%80%82\/","title":{"rendered":"PostgreSQL 15\u5373\u5c06\u63a8\u51fa\uff083\uff09psql\u7684\u6539\u8fdb"},"content":{"rendered":"<h1>\u9996\u5148<\/h1>\n<p>\u55b5~\u3002<br \/>\n\u9019\u6b21\u6211\u5011\u4f86\u770b\u770b\u5927\u5bb6\u559c\u611b\u7684psql\u7684PostgreSQL 15\u6539\u9032\u9805\u76ee\u3002<br \/>\n\u5099\u8a3b\uff1a\u7531\u65bc\u76ee\u524d\u53ea\u662fbeta1\u7248\u672c\uff0c\u56e0\u6b64\u672a\u4f86\u53ef\u80fd\u6703\u6709\u66f4\u6539\u3002<\/p>\n<h1>\u9879\u76ee\u6539\u8fdb\u6458\u8981<\/h1>\n<p>PostgreSQL 15\u4e2d\u4e5f\u5305\u542b\u4e86\u8bb8\u591a\u5bf9psql\u7684\u6539\u8fdb\u9879\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">psql\u306e \\copy\u30b3\u30de\u30f3\u30c9\u306e\u6027\u80fd\u5411\u4e0a<\/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\">psql\u30b3\u30de\u30f3\u30c9 \\getenv \u306e\u8ffd\u52a0<\/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\">psql\u306e\\dl\/, lo_list\u306e&#8217;+&#8217;\u30aa\u30d7\u30b7\u30e7\u30f3\u306b\u3088\u308b\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u6a29\u9650\u8868\u793a\u306e\u8ffd\u52a0<\/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\">\\dconfig \u30b3\u30de\u30f3\u30c9\u306e\u8ffd\u52a0<\/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\">\\weatch \u30b3\u30de\u30f3\u30c9\u304c\u30da\u30fc\u30b8\u30e3\u306b\u5bfe\u5fdc<\/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\">\u30af\u30a8\u30ea\u5185\u306e\u30c0\u30d6\u30eb\u30cf\u30a4\u30d5\u30f3\u306e\u30b3\u30e1\u30f3\u30c8\u3092\u30b5\u30fc\u30d0\u306b\u9001\u4fe1\u3059\u308b\u3088\u3046\u306b\u306a\u3063\u305f<\/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\">\u30c0\u30d6\u30eb\u30cf\u30a4\u30d5\u30f3\u306e\u30b3\u30e1\u30f3\u30c8\u30de\u30fc\u30ab\u30fc\u3092\u633f\u5165\u3059\u308b\u3088\u3046\u306bpsql\u306ereadline\u6a5f\u80fd\u3092\u6539\u5584<\/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\">\u8907\u6570\u554f\u3044\u5408\u308f\u305b\u7d50\u679c\u3092psql\u304c\u5168\u3066\u8868\u793a\u3059\u308b\u3088\u3046\u306b\u306a\u3063\u305f<\/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\">\u30bf\u30d6\u88dc\u5b8c\u3092\u6539\u826f<\/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\">psql\u306e\u30b5\u30dd\u30fc\u30c8\u3092PostgreSQL 9.2\u4ee5\u964d\u304c\u52d5\u4f5c\u3059\u308b\u30b5\u30fc\u30d0\u306b\u9650\u5b9a<\/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\">psql \u306e \\password \u30b3\u30de\u30f3\u30c9\u3092\u6539\u5584\u3059\u308b\uff08\u30ea\u30ea\u30fc\u30b9\u30ce\u30fc\u30c8\u672a\u8a18\u8f09\uff09<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">psql\u306e\u7d75\u6587\u5b57\u306e\u5e45\u306e\u8a08\u7b97\u306e\u554f\u984c\u3092\u6539\u5584\uff08\u30ea\u30ea\u30fc\u30b9\u30ce\u30fc\u30c8\u672a\u8a18\u8f09\uff09<\/ul>\n<h1>\u6539\u5584\u9879\u76ee\u7684\u8be6\u7ec6\u5185\u5bb9<\/h1>\n<p>\u6211\u4eec\u5c06\u6d4f\u89c8\u4ee5\u4e0b\u6539\u5584\u9879\u76ee\u7684\u8be6\u7ec6\u4fe1\u606f\u3002<br \/>\n\u4e3a\u4e86\u66f4\u597d\u5730\u6bd4\u8f83PostgreSQL 14\uff0c\u6211\u4eec\u8bb0\u5f55\u4e86\u4e24\u4e2a\u7248\u672c\u7684\u884c\u4e3a\u3002<\/p>\n<h2>\u63d0\u9ad8 psql \u4e2d \\copy \u547d\u4ee4\u7684\u6027\u80fd<\/h2>\n<p>psql\u63d0\u4f9b\u4e86\u4e00\u4e2a\u540d\u4e3aCOPY\u7684\u5143\u547d\u4ee4\u3002<br \/>\n\u5b83\u7684\u4f5c\u7528\u6b63\u5982\u5176\u540d\u79f0\u6240\u793a\uff0c\u5c06\u4f4d\u4e8e\u5ba2\u6237\u7aef(psql)\u80fd\u591f\u8bc6\u522b\u7684\u4f4d\u7f6e\u7684\u6587\u4ef6\/\u7a0b\u5e8f\u89e3\u6790\u4e3a\u53ef\u8bfb\u53d6\u7684\u4e00\u6b21\u6027\u52a0\u8f7dCOPY\u547d\u4ee4\u3002<\/p>\n<p>\u6211\u5728\u672c\u5730\u73af\u5883\u4e2d\u8fdb\u884c\u4e86\u6bd4\u8f83\uff0c\u770b\u770b\u4f7f\u7528COPY\u547d\u4ee4\u8fdb\u884c\u6279\u91cf\u52a0\u8f7d\u6216\u8f6c\u50a8\u7684\u901f\u5ea6\u63d0\u9ad8\u4e86\u591a\u5c11\u3002<\/p>\n<h3>\u7528\u4e8e\u6d4b\u91cf\u7684\u684c\u5b50 y\u00fa c\u00e8 de<\/h3>\n<p>\u5b9a\u4e49\u4e00\u4e2aUNLOGGED TABLE\u4ee5\u6392\u9664WAL\u5199\u5165\u7684\u5f71\u54cd\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">CREATE<\/span> <span class=\"n\">UNLOGGED<\/span> <span class=\"k\">TABLE<\/span> <span class=\"n\">test<\/span> <span class=\"p\">(<\/span><span class=\"n\">id<\/span> <span class=\"nb\">int<\/span><span class=\"p\">,<\/span> <span class=\"n\">num_data<\/span> <span class=\"nb\">numeric<\/span><span class=\"p\">,<\/span> <span class=\"n\">txt_data<\/span> <span class=\"nb\">text<\/span><span class=\"p\">);<\/span>\r\n<\/code><\/pre>\n<p>\u5728\u8fd9\u4e2a\u8868\u4e2d\u63d2\u51651000000\u6761\u968f\u610f\u7684\u503c\uff0c\u5982\u4e0b\u6240\u793a\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">INSERT<\/span> <span class=\"k\">INTO<\/span> <span class=\"n\">test<\/span> <span class=\"k\">VALUES<\/span> <span class=\"p\">(<\/span><span class=\"n\">generate_series<\/span><span class=\"p\">(<\/span><span class=\"mi\">1<\/span><span class=\"p\">,<\/span> <span class=\"mi\">1000000<\/span><span class=\"p\">),<\/span> <span class=\"n\">random<\/span><span class=\"p\">(),<\/span> <span class=\"n\">md5<\/span><span class=\"p\">(<\/span><span class=\"n\">CLOCK_TIMESTAMP<\/span><span class=\"p\">()::<\/span><span class=\"nb\">text<\/span><span class=\"p\">));<\/span>\r\n<\/code><\/pre>\n<p>\u5c06\u52a0\u8f7d\u7684\u8868\u683c\u901a\u8fc7COPY TO\u547d\u4ee4\u8f6c\u50a8\u5230\u4e00\u4e2a\u968f\u610f\u7684\u4f4d\u7f6e\u3002<\/p>\n<h3>\u8fdb\u884c\u6d4b\u91cf<\/h3>\n<p>\u6240\u4ee5\uff0c\u5c06\u8fd9\u4e2a\u5df2\u5220\u9664\u7684\u6587\u4ef6<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">psql\u306e\\copy<\/ul>\n<\/li>\n<\/ul>\n<p>SQL\u30b3\u30de\u30f3\u30c9\u306eCOPY<br \/>\n\u3092\u4f7f\u3063\u3066\u3001TRUNCATE\u3057\u3066\u7a7a\u306b\u3057\u305f\u30c6\u30fc\u30d6\u30eb\u306b\u30ed\u30fc\u30c9\u3057\u3066\u307f\u308b\u3002\u30ed\u30fc\u30c9\u5f8c\u306b\u306f\u307e\u305fTRUNCATE\u3057\u3066\u7a7a\u306b\u3057\u3066\u304a\u304f\u3002<br \/>\n\u30ed\u30fc\u30c9\u51e6\u7406\u306e\u6642\u9593\u306fpsql\u306e\\timing\u3092ON\u306b\u3057\u3066\u304a\u3044\u3066\u53d6\u5f97\u3059\u308b\u3002<br \/>\n\u3053\u308c\u30923\u56de\u6e2c\u5b9a\u3057\u3066\u5e73\u5747\u5024\u3092\u3068\u3063\u3066\u307f\u308b\u3002<\/p>\n<h3>\u7ed3\u5c40 (ji\u00e9 j\u00fa)<\/h3>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d4a8137434c4406cb3157\/20-0.png\" alt=\"Improve performance of psql's yen-copy command.png\" \/><\/div>\n<p>\u5f53\u89c2\u5bdf\u5230\\psql\u7684\u5904\u7406\u65f6\u95f4\u65f6\uff0c\u53ef\u4ee5\u660e\u663e\u53d1\u73b0PostgreSQL 15beta1\u7684\u901f\u5ea6\u66f4\u5feb\u3002<br \/>\n\u53e6\u5916\uff0c\u5c31SQL\u547d\u4ee4COPY\u800c\u8a00\uff0c\u5728PostgreSQL 15beta1\u4e2d\u4e5f\u7a0d\u5fae\u6709\u6240\u63d0\u5347\uff0c\u4f46\u5dee\u8ddd\u5e76\u4e0d\u5927\u3002<br \/>\n\u56e0\u6b64\u53ef\u4ee5\u786e\u5b9a\uff0c\u901a\u8fc7\u8fd9\u4e2a\u7ed3\u679c\u53ef\u4ee5\u5224\u65ad\\copy\u81ea\u8eab\u7684\u6027\u80fd\u5df2\u7ecf\u63d0\u5347\u4e86\u3002<\/p>\n<h3>\u53ef\u4ee5\u63d0\u4f9b\u7684\u4fe1\u606f<\/h3>\n<p>\u8fd9\u4e2a\u6539\u8fdb\u662f\u5728Commitfest 2021-07\u4e2d\u63d0\u4ea4\u7684\u3002<br \/>\n\u5bf9\u4e8epsql\u4e2d\u7684\\copy from\u547d\u4ee4\uff0c\u5c06\u6570\u636e\u4ee5\u66f4\u5927\u7684\u5757\u53d1\u9001\u5230\u670d\u52a1\u5668\u3002<\/p>\n<h2>\u6dfb\u52a0psql\u547d\u4ee4\\getenv\u7684\u529f\u80fd<\/h2>\n<p>\u65b0\u589e\u4e86\u4e00\u4e2a\u540d\u4e3a\\getenv\u7684psql\u547d\u4ee4\uff0c\u7528\u4e8e\u5c06\u8fd0\u884cpsql\u7684\u73af\u5883\u7684\u73af\u5883\u53d8\u91cf\u8bbe\u7f6e\u4e3apsql\u53d8\u91cf\u3002\u5f53\u542f\u52a8PostgreSQL 15\u7684psql\u5e76\u663e\u793a\u5e2e\u52a9\\?\u65f6\uff0c\u5e2e\u52a9\u4fe1\u606f\u5c06\u663e\u793a\u4ee5\u4e0b\u547d\u4ee4\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">test<\/span><span class=\"o\">-#<\/span> <span class=\"err\">\\<\/span><span class=\"o\">?<\/span>\r\n<span class=\"k\">General<\/span>\r\n  <span class=\"err\">\\<\/span><span class=\"n\">copyright<\/span>             <span class=\"k\">show<\/span> <span class=\"n\">PostgreSQL<\/span> <span class=\"k\">usage<\/span> <span class=\"k\">and<\/span> <span class=\"n\">distribution<\/span> <span class=\"n\">terms<\/span>\r\n<span class=\"err\">\uff08\u4e2d\u7565\uff09<\/span>\r\n<span class=\"n\">Operating<\/span> <span class=\"k\">System<\/span>\r\n  <span class=\"err\">\\<\/span><span class=\"n\">cd<\/span> <span class=\"p\">[<\/span><span class=\"n\">DIR<\/span><span class=\"p\">]<\/span>              <span class=\"n\">change<\/span> <span class=\"n\">the<\/span> <span class=\"k\">current<\/span> <span class=\"n\">working<\/span> <span class=\"n\">directory<\/span>\r\n  <span class=\"err\">\\<\/span><span class=\"n\">getenv<\/span> <span class=\"n\">PSQLVAR<\/span> <span class=\"n\">ENVVAR<\/span> <span class=\"k\">fetch<\/span> <span class=\"n\">environment<\/span> <span class=\"k\">variable<\/span>\r\n  <span class=\"err\">\\<\/span><span class=\"n\">setenv<\/span> <span class=\"n\">NAME<\/span> <span class=\"p\">[<\/span><span class=\"n\">VALUE<\/span><span class=\"p\">]<\/span>   <span class=\"k\">set<\/span> <span class=\"k\">or<\/span> <span class=\"n\">unset<\/span> <span class=\"n\">environment<\/span> <span class=\"k\">variable<\/span>\r\n  <span class=\"err\">\\<\/span><span class=\"n\">timing<\/span> <span class=\"p\">[<\/span><span class=\"k\">on<\/span><span class=\"o\">|<\/span><span class=\"k\">off<\/span><span class=\"p\">]<\/span>       <span class=\"n\">toggle<\/span> <span class=\"n\">timing<\/span> <span class=\"k\">of<\/span> <span class=\"n\">commands<\/span> <span class=\"p\">(<\/span><span class=\"n\">currently<\/span> <span class=\"k\">off<\/span><span class=\"p\">)<\/span>\r\n  <span class=\"err\">\\<\/span><span class=\"o\">!<\/span> <span class=\"p\">[<\/span><span class=\"n\">COMMAND<\/span><span class=\"p\">]<\/span>           <span class=\"k\">execute<\/span> <span class=\"n\">command<\/span> <span class=\"k\">in<\/span> <span class=\"n\">shell<\/span> <span class=\"k\">or<\/span> <span class=\"k\">start<\/span> <span class=\"n\">interactive<\/span> <span class=\"n\">shell<\/span>\r\n<\/code><\/pre>\n<p>\u8fd9\u4e2a \\getenv \u547d\u4ee4\u5e26\u6709\u4e24\u4e2a\u53c2\u6570\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u6700\u521d\u306e\u5f15\u6570PSQLVAR\u306f\u4efb\u610f\u306epsql\u5909\u6570\u3092\u6307\u5b9a\u3059\u308b\u3002<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">2\u756a\u76ee\u306e\u5f15\u6570ENVVAR\u306b\u306fpsql\u3092\u8d77\u52d5\u3057\u305f\u74b0\u5883\u306b\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u74b0\u5883\u5909\u6570\uff08\u5b9f\u88c5\u306f\u898b\u3066\u3044\u306a\u3044\u3051\u3069getenv\u30b7\u30b9\u30c6\u30e0\u30b3\u30fc\u30eb\u3067\u53d6\u5f97\u3067\u304d\u308b\u3082\u306e\uff1f\uff09\u3092\u6307\u5b9a\u3059\u308b\u3002<\/ul>\n<p>\u5047\u8bbe\u5728bash\u4e0a\u5df2\u8bbe\u7f6e\u4ee5\u4e0b\u73af\u5883\u53d8\u91cf\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nv\">$ <\/span><span class=\"nb\">export <\/span><span class=\"nv\">VOICE<\/span><span class=\"o\">=<\/span><span class=\"s2\">\"\u306b\u3083\u30fc\u3093\"<\/span>\r\n<span class=\"nv\">$ <\/span><span class=\"nb\">echo<\/span> <span class=\"nv\">$VOICE<\/span>\r\n\u306b\u3083\u30fc\u3093\r\n<span class=\"err\">$<\/span>\r\n<\/code><\/pre>\n<p>\u5728\u8fd9\u4e2a\u73af\u5883\u4e2d\u542f\u52a8psql\uff0c\u5e76\u4f7f\u7528\\getenv\u547d\u4ee4\u6765\u5c06\u73af\u5883\u53d8\u91cf\u7684\u503c\u8bbe\u7f6e\u7ed9psql\u53d8\u91cfvoice\uff0c\u5982\u4e0b\u6240\u793a\u3002<br \/>\n\u6240\u8bbe\u7f6e\u7684psql\u53d8\u91cf\u53ef\u5728\u67e5\u8be2\u5185\u4f7f\u7528\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">test<\/span><span class=\"o\">=#<\/span> <span class=\"err\">\\<\/span><span class=\"n\">getenv<\/span> <span class=\"n\">voice<\/span> <span class=\"n\">VOICE<\/span>\r\n<span class=\"n\">test<\/span><span class=\"o\">=#<\/span> <span class=\"k\">SELECT<\/span> <span class=\"p\">:<\/span><span class=\"s1\">'voice'<\/span><span class=\"p\">;<\/span>\r\n <span class=\"o\">?<\/span><span class=\"k\">column<\/span><span class=\"o\">?<\/span>\r\n<span class=\"c1\">----------<\/span>\r\n <span class=\"err\">\u306b\u3083\u30fc\u3093<\/span>\r\n<span class=\"p\">(<\/span><span class=\"mi\">1<\/span> <span class=\"k\">row<\/span><span class=\"p\">)<\/span>\r\n\r\n<span class=\"n\">test<\/span><span class=\"o\">=#<\/span>\r\n<\/code><\/pre>\n<p>\u4f5c\u4e3a\u66f4\u5b9e\u7528\u7684\u7528\u6cd5\u4e4b\u4e00\uff0c\u53ef\u4ee5\u5148\u5c06\u8868\u540d\u8bbe\u7f6e\u4e3a\u73af\u5883\u53d8\u91cf\uff0c\u7136\u540e\u4f7f\u7528\\getenv\u547d\u4ee4\u6267\u884c\u811a\u672c\uff0c\u6216\u8005\u901a\u8fc7\u6761\u4ef6\u5206\u652f(\\if\u7b49)\u4ece\u73af\u5883\u53d8\u91cf\u4e2d\u83b7\u53d6\u8981\u8bc4\u4f30\u7684\u53d8\u91cf\u503c\uff0c\u6839\u636e\u73af\u5883\u53d8\u91cf\u7684\u8bbe\u7f6e\u503c\u6765\u6539\u53d8\u7a0b\u5e8f\u7684\u8fd0\u884c\u65b9\u5f0f\uff0c\u4e5f\u8bb8\u53ef\u4ee5\u7528\u4e8e\u8fd9\u6837\u7684\u7528\u9014\u3002<\/p>\n<h3>\u8bf7\u63d0\u4f9b\u76f8\u5173\u6570\u636e<\/h3>\n<p>\u8fd9\u4e2a\u6539\u8fdb\u5728Commitfest\u5217\u8868\u4e2d\u627e\u4e0d\u5230\u3002<br \/>\n\u5982\u679c\u641c\u7d22ML\uff0c\u627e\u5230pgsql-commiters\u7684\u8fd9\u5c01\u90ae\u4ef6\u53ef\u80fd\u662f\u76f8\u5173\u7684\u3002<br \/>\npgsql\uff1a\u5728psql\u4e2d\u6dfb\u52a0\u4e00\u4e2a\\getenv\u547d\u4ee4\u3002<\/p>\n<h2>\u4f7f\u7528psql\u7684\\dl\u548c\\lo_list\u547d\u4ee4\u7684&#8217;+&#8217;\u9009\u9879\u53ef\u4ee5\u6dfb\u52a0\u5bf9\u8c61\u6743\u9650\u7684\u663e\u793a<\/h2>\n<p>\u5728PostgreSQL 15\u4e2d\uff0c\\dl,lo_list\u662f\u4e00\u4e2a\u663e\u793a\u5927\u5bf9\u8c61\u5217\u8868\u7684psql\u547d\u4ee4\u3002\u901a\u8fc7\u6dfb\u52a0+\u9009\u9879\uff0c\u53ef\u4ee5\u663e\u793a\u5177\u6709\u5bf9\u6bcf\u4e2a\u5927\u5bf9\u8c61\u8bbf\u95ee\u6743\u9650\uff08SELECT\/UPDATE\uff09\u7684\u7528\u6237\u4fe1\u606f\u3002<\/p>\n<p>PostgreSQL 15 &#8211;&gt; PostgreSQL 15 \u7248\u672c<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">postgres<\/span><span class=\"o\">=#<\/span> <span class=\"err\">\\<\/span><span class=\"n\">dl<\/span>\r\n         <span class=\"k\">Large<\/span> <span class=\"n\">objects<\/span>\r\n  <span class=\"n\">ID<\/span>   <span class=\"o\">|<\/span>  <span class=\"k\">Owner<\/span>   <span class=\"o\">|<\/span> <span class=\"n\">Description<\/span>\r\n<span class=\"c1\">-------+----------+-------------<\/span>\r\n <span class=\"mi\">10001<\/span> <span class=\"o\">|<\/span> <span class=\"n\">postgres<\/span> <span class=\"o\">|<\/span>\r\n<span class=\"p\">(<\/span><span class=\"mi\">1<\/span> <span class=\"k\">row<\/span><span class=\"p\">)<\/span>\r\n\r\n<span class=\"n\">postgres<\/span><span class=\"o\">=#<\/span> <span class=\"err\">\\<\/span><span class=\"n\">dl<\/span><span class=\"o\">+<\/span>\r\n                     <span class=\"k\">Large<\/span> <span class=\"n\">objects<\/span>\r\n  <span class=\"n\">ID<\/span>   <span class=\"o\">|<\/span>  <span class=\"k\">Owner<\/span>   <span class=\"o\">|<\/span>  <span class=\"k\">Access<\/span> <span class=\"k\">privileges<\/span>   <span class=\"o\">|<\/span> <span class=\"n\">Description<\/span>\r\n<span class=\"c1\">-------+----------+----------------------+-------------<\/span>\r\n <span class=\"mi\">10001<\/span> <span class=\"o\">|<\/span> <span class=\"n\">postgres<\/span> <span class=\"o\">|<\/span> <span class=\"n\">postgres<\/span><span class=\"o\">=<\/span><span class=\"n\">rw<\/span><span class=\"o\">\/<\/span><span class=\"n\">postgres<\/span><span class=\"o\">+|<\/span>\r\n       <span class=\"o\">|<\/span>          <span class=\"o\">|<\/span> <span class=\"n\">user_a<\/span><span class=\"o\">=<\/span><span class=\"n\">w<\/span><span class=\"o\">\/<\/span><span class=\"n\">postgres<\/span>   <span class=\"o\">+|<\/span>\r\n       <span class=\"o\">|<\/span>          <span class=\"o\">|<\/span> <span class=\"n\">user_b<\/span><span class=\"o\">=<\/span><span class=\"n\">r<\/span><span class=\"o\">\/<\/span><span class=\"n\">postgres<\/span>    <span class=\"o\">|<\/span>\r\n<span class=\"p\">(<\/span><span class=\"mi\">1<\/span> <span class=\"k\">row<\/span><span class=\"p\">)<\/span>\r\n\r\n<span class=\"n\">postgres<\/span><span class=\"o\">=#<\/span> <span class=\"err\">\\<\/span><span class=\"n\">lo_list<\/span>\r\n         <span class=\"k\">Large<\/span> <span class=\"n\">objects<\/span>\r\n  <span class=\"n\">ID<\/span>   <span class=\"o\">|<\/span>  <span class=\"k\">Owner<\/span>   <span class=\"o\">|<\/span> <span class=\"n\">Description<\/span>\r\n<span class=\"c1\">-------+----------+-------------<\/span>\r\n <span class=\"mi\">10001<\/span> <span class=\"o\">|<\/span> <span class=\"n\">postgres<\/span> <span class=\"o\">|<\/span>\r\n<span class=\"p\">(<\/span><span class=\"mi\">1<\/span> <span class=\"k\">row<\/span><span class=\"p\">)<\/span>\r\n\r\n<span class=\"n\">postgres<\/span><span class=\"o\">=#<\/span> <span class=\"err\">\\<\/span><span class=\"n\">lo_list<\/span><span class=\"o\">+<\/span>\r\n                     <span class=\"k\">Large<\/span> <span class=\"n\">objects<\/span>\r\n  <span class=\"n\">ID<\/span>   <span class=\"o\">|<\/span>  <span class=\"k\">Owner<\/span>   <span class=\"o\">|<\/span>  <span class=\"k\">Access<\/span> <span class=\"k\">privileges<\/span>   <span class=\"o\">|<\/span> <span class=\"n\">Description<\/span>\r\n<span class=\"c1\">-------+----------+----------------------+-------------<\/span>\r\n <span class=\"mi\">10001<\/span> <span class=\"o\">|<\/span> <span class=\"n\">postgres<\/span> <span class=\"o\">|<\/span> <span class=\"n\">postgres<\/span><span class=\"o\">=<\/span><span class=\"n\">rw<\/span><span class=\"o\">\/<\/span><span class=\"n\">postgres<\/span><span class=\"o\">+|<\/span>\r\n       <span class=\"o\">|<\/span>          <span class=\"o\">|<\/span> <span class=\"n\">user_a<\/span><span class=\"o\">=<\/span><span class=\"n\">w<\/span><span class=\"o\">\/<\/span><span class=\"n\">postgres<\/span>   <span class=\"o\">+|<\/span>\r\n       <span class=\"o\">|<\/span>          <span class=\"o\">|<\/span> <span class=\"n\">user_b<\/span><span class=\"o\">=<\/span><span class=\"n\">r<\/span><span class=\"o\">\/<\/span><span class=\"n\">postgres<\/span>    <span class=\"o\">|<\/span>\r\n<span class=\"p\">(<\/span><span class=\"mi\">1<\/span> <span class=\"k\">row<\/span><span class=\"p\">)<\/span>\r\n\r\n<span class=\"n\">postgres<\/span><span class=\"o\">=#<\/span>\r\n<\/code><\/pre>\n<p>\u6b64\u5916\uff0c\u5c3d\u7ba1\u5728PostgreSQL 14\u7684psql\u4e2d\u53ef\u4ee5\u4f7f\u7528\\dl+\u547d\u4ee4\uff0c\u4f46\u663e\u793a\u7684\u4fe1\u606f\u4e0e\\dl\u547d\u4ee4\u76f8\u540c\u3002<\/p>\n<h3>\u8bf7\u63d0\u4f9b\u76f8\u5173\u8d44\u6599<\/h3>\n<p>\u8fd9\u4e2a\u6539\u8fdb\u57282021-03\u7684Commitfest\u4e2d\u5df2\u7ecf\u63d0\u4ea4\u3002<br \/>\npsql: \u901a\u8fc7\\dl+\u547d\u4ee4\u5217\u51fa\u5927\u5bf9\u8c61\u6743\u9650\u3002<\/p>\n<h2>\u5728\u4e2d\u56fd\u672c\u571f\u7528\u4e2d\u6587\u91cd\u65b0\u8868\u8ff0\u4ee5\u4e0a\u5185\u5bb9\uff0c\u53ea\u9700\u8981\u4e00\u4e2a\u9009\u9879\uff1a<\/h2>\n<p>\u6dfb\u52a0 &#8220;dconfig&#8221; \u547d\u4ee4\u3002<\/p>\n<p>\u4e2a\u4eba\u5bf9\u4e8e\u8fd9\u6b21\u6539\u8fdb\u9879\u76ee\u6700\u559c\u6b22\u7684\u662f\\dconfig\u547d\u4ee4\u3002\u5b83\u662fpsql\u4e2d\u7528\u4e8e\u663e\u793a\u670d\u52a1\u5668\u53d8\u91cf\u7684\u547d\u4ee4\u3002\u867d\u7136\u65e9\u671f\u7684PostgreSQL\u547d\u4ee4SHOW\u4e5f\u6709\u663e\u793a\u670d\u52a1\u5668\u53d8\u91cf\u540d\u548c\u8bbe\u7f6e\u503c\u7684\u529f\u80fd\uff0c\u4f46\\dconfig\u548cSHOW\u7684\u4e3b\u8981\u533a\u522b\u5728\u4e8e\\dconfig\u53ef\u4ee5\u8fdb\u884c\u6a21\u5f0f\u5339\u914d\u3002<\/p>\n<p>\u4f8b\u5982\uff0c\u5982\u679c\u8981\u663e\u793a\u4e00\u4e2a\u540d\u4e3amax_parallel_workers_per_gather\u7684\u53c2\u6570\uff08\u957f\u800c\u4e14\u4e0d\u6613\u8bb0\u5fc6\uff09\uff0c\u53ef\u4ee5\u4f7f\u7528\u4e0b\u9762\u7684\u6a21\u5f0f\u5339\u914d\u5b57\u7b26\u63d0\u53d6\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">test<\/span><span class=\"o\">=#<\/span> <span class=\"err\">\\<\/span><span class=\"n\">dconfig<\/span> <span class=\"k\">max<\/span><span class=\"o\">*<\/span><span class=\"n\">para<\/span><span class=\"o\">*<\/span><span class=\"n\">gather<\/span>\r\n    <span class=\"n\">List<\/span> <span class=\"k\">of<\/span> <span class=\"n\">configuration<\/span> <span class=\"k\">parameters<\/span>\r\n            <span class=\"k\">Parameter<\/span>            <span class=\"o\">|<\/span> <span class=\"n\">Value<\/span>\r\n<span class=\"c1\">---------------------------------+-------<\/span>\r\n <span class=\"n\">max_parallel_workers_per_gather<\/span> <span class=\"o\">|<\/span> <span class=\"mi\">2<\/span>\r\n<span class=\"p\">(<\/span><span class=\"mi\">1<\/span> <span class=\"k\">row<\/span><span class=\"p\">)<\/span>\r\n\r\n<span class=\"n\">test<\/span><span class=\"o\">=#<\/span>\r\n<\/code><\/pre>\n<p>\u6b64\u5916\uff0c\u5728SHOW\u547d\u4ee4\u4e2d\u65e0\u6cd5\u4f7f\u7528\u5982\u4e0a\u6240\u793a\u7684\u6a21\u5f0f\u5339\u914d\u3002\u55b5\u55b5\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">test<\/span><span class=\"o\">=#<\/span> <span class=\"k\">SHOW<\/span> <span class=\"k\">max<\/span><span class=\"o\">*<\/span><span class=\"n\">para<\/span><span class=\"o\">*<\/span><span class=\"n\">gather<\/span><span class=\"p\">;<\/span>\r\n<span class=\"n\">ERROR<\/span><span class=\"p\">:<\/span>  <span class=\"n\">syntax<\/span> <span class=\"n\">error<\/span> <span class=\"k\">at<\/span> <span class=\"k\">or<\/span> <span class=\"n\">near<\/span> <span class=\"nv\">\"*\"<\/span>\r\n<span class=\"n\">LINE<\/span> <span class=\"mi\">1<\/span><span class=\"p\">:<\/span> <span class=\"k\">SHOW<\/span> <span class=\"k\">max<\/span><span class=\"o\">*<\/span><span class=\"n\">para<\/span><span class=\"o\">*<\/span><span class=\"n\">gather<\/span><span class=\"p\">;<\/span>\r\n                <span class=\"o\">^<\/span>\r\n<\/code><\/pre>\n<p>\u5bf9\u4e8e\u6211\u8fd9\u6837\u8bb0\u4e0d\u4f4f\u53c2\u6570\u540d\u7684\u4eba\u6765\u8bf4\uff0c\u8fd9\u771f\u662f\u592a\u65b9\u4fbf\u4e86\u3002\u5f53\u4f7f\u7528SHOW\u547d\u4ee4\u663e\u793a\u4e2a\u522b\u53c2\u6570\u503c\u65f6\uff0c\u8f93\u5165\u957f\u53c2\u6570\u540d\u771f\u662f\u9ebb\u70e6\u3002\u4f46\u662f\uff0c\u8fd9\u6837\u4e00\u6765\uff0c\u53c2\u6570\u540d\u8d8a\u6765\u8d8a\u5bb9\u6613\u5fd8\u8bb0\u4e86&#8230;\u7b11<\/p>\n<p>\u5c31\u4e2a\u4eba\u800c\u8a00\uff0c\u6211\u89c9\u5f97\u6709\u70b9\u8e4a\u8df7\u7684\u662f\uff0c\u4e3a\u4ec0\u4e48\u8fd9\u4e2apsql\u547d\u4ee4\u7684\u540d\u79f0\u4e0d\u662f\\show\uff0c\u800c\u662f\u88ab\u547d\u540d\u4e3a\\dconfig\u5462\uff1f<\/p>\n<h3>\u53c2\u8003\u4fe1\u606f<\/h3>\n<p>\u8fd9\u4e2a\u6539\u8fdb\u9879\u76ee\u5728Commitfest\u7684\u5217\u8868\u4e2d\u6ca1\u6709\u51fa\u73b0\u3002<br \/>\n\u641c\u7d22hackers-ml\uff0c\u4f3c\u4e4e2021-04-07\u7684\u7535\u5b50\u90ae\u4ef6\u662f\u7b2c\u4e00\u6b21\u63d0\u5230\u5b83\u3002<br \/>\npgsql: psql: \u6dfb\u52a0\\dconfig\u547d\u4ee4\u4ee5\u663e\u793a\u670d\u52a1\u5668\u7684\u914d\u7f6e\u53c2\u6570\u3002<br \/>\n\u56e0\u6b64\uff0c\u5b83\u53ef\u80fd\u4e0d\u5728Commitfest 2022-03\u7684\u5217\u8868\u4e2d\u3002<br \/>\n\u4e5f\u8bb8\uff0c\u8fd9\u4e2aCommitfest 2022-03\u4e0e\u8fd9\u4e2a\u63d0\u4ea4\u6709\u5173\u3002<br \/>\n\u4fee\u590dpsql\u7684\u6a21\u5f0f\u5904\u7406\u3002<\/p>\n<h2>weatch\u547d\u4ee4\u652f\u6301\u5206\u9875\u529f\u80fd\u3002<\/h2>\n<p>psql\u4e2d\u6709\u4e00\u4e2a\u529f\u80fd\u53eb\u505a\\watch\u547d\u4ee4\u3002\u5b83\u53ef\u4ee5\u91cd\u590d\u6267\u884c\u4e0a\u4e00\u6b21\u5728psql\u4e2d\u6267\u884c\u7684\u547d\u4ee4\uff0c\u5e76\u4e14\u53ef\u4ee5\u6839\u636e\u6307\u5b9a\u7684\u79d2\u6570\u8fdb\u884c\u5faa\u73af\u6267\u884c\uff0c\u975e\u5e38\u9002\u5408\u4f7f\u7528SQL\u8fdb\u884c\u4e34\u65f6\u76d1\u89c6\u3002<br \/>\n\u8fd9\u4e2a\u547d\u4ee4\u4ee5\u524d\u4e0d\u652f\u6301\u5206\u9875\uff0c\u4f46\u662f\u4ecePostgreSQL 15\u5f00\u59cb\uff0c\u53ef\u4ee5\u901a\u8fc7\u6307\u5b9a\u7684PAGER\u547d\u4ee4\u8fdb\u884c\u5206\u9875\u63a7\u5236\u4e86\u3002<\/p>\n<p>\u8981\u4ee5\u5206\u9875\u5668\u547d\u4ee4\u63a7\u5236watch\u547d\u4ee4\u7684\u7ed3\u679c\uff0c\u9700\u8981\u5728\u73af\u5883\u53d8\u91cfPSQL_WATCH_PAGER\u4e2d\u8bbe\u7f6e\u5206\u9875\u5668\u547d\u4ee4\uff08\u4f8b\u5982less\uff09\uff0c\u7136\u540e\u6267\u884cpsql\u547d\u4ee4\u65f6\u5373\u53ef\u4f7f\u7528\u3002<\/p>\n<p>\u6bd4\u5982\uff0c\u5728bash\u4e0a\u8bbe\u7f6e`export PSQL_WATCH_PAGER=&#8221;less&#8221;`\u5e76\u542f\u52a8psql\uff0c\u6267\u884c\u4e00\u6761\u751f\u621020\u884c\u7ed3\u679c\u7684SELECT\u8bed\u53e5\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"err\">$<\/span> <span class=\"n\">export<\/span> <span class=\"n\">PSQL_WATCH_PAGER<\/span><span class=\"o\">=<\/span><span class=\"nv\">\"less\"<\/span>\r\n<span class=\"err\">$<\/span> <span class=\"o\">~\/<\/span><span class=\"n\">pgsql<\/span><span class=\"o\">\/<\/span><span class=\"n\">pgsql<\/span><span class=\"o\">-<\/span><span class=\"mi\">15<\/span><span class=\"n\">b1<\/span><span class=\"o\">\/<\/span><span class=\"n\">bin<\/span><span class=\"o\">\/<\/span><span class=\"n\">psql<\/span> <span class=\"o\">-<\/span><span class=\"n\">p<\/span> <span class=\"mi\">10015<\/span> <span class=\"n\">postgres<\/span>\r\n<span class=\"n\">psql<\/span> <span class=\"p\">(<\/span><span class=\"mi\">15<\/span><span class=\"n\">beta1<\/span><span class=\"p\">)<\/span>\r\n<span class=\"k\">Type<\/span> <span class=\"nv\">\"help\"<\/span> <span class=\"k\">for<\/span> <span class=\"n\">help<\/span><span class=\"p\">.<\/span>\r\n\r\n<span class=\"n\">postgres<\/span><span class=\"o\">=#<\/span> <span class=\"k\">SELECT<\/span> <span class=\"n\">generate_series<\/span><span class=\"p\">(<\/span><span class=\"mi\">1<\/span><span class=\"p\">,<\/span><span class=\"mi\">20<\/span><span class=\"p\">),<\/span> <span class=\"n\">clock_timestamp<\/span><span class=\"p\">();<\/span>\r\n <span class=\"n\">generate_series<\/span> <span class=\"o\">|<\/span>        <span class=\"n\">clock_timestamp<\/span>\r\n<span class=\"c1\">-----------------+-------------------------------<\/span>\r\n               <span class=\"mi\">1<\/span> <span class=\"o\">|<\/span> <span class=\"mi\">2022<\/span><span class=\"o\">-<\/span><span class=\"mi\">05<\/span><span class=\"o\">-<\/span><span class=\"mi\">28<\/span> <span class=\"mi\">15<\/span><span class=\"p\">:<\/span><span class=\"mi\">32<\/span><span class=\"p\">:<\/span><span class=\"mi\">19<\/span><span class=\"p\">.<\/span><span class=\"mi\">803739<\/span><span class=\"o\">+<\/span><span class=\"mi\">09<\/span>\r\n               <span class=\"mi\">2<\/span> <span class=\"o\">|<\/span> <span class=\"mi\">2022<\/span><span class=\"o\">-<\/span><span class=\"mi\">05<\/span><span class=\"o\">-<\/span><span class=\"mi\">28<\/span> <span class=\"mi\">15<\/span><span class=\"p\">:<\/span><span class=\"mi\">32<\/span><span class=\"p\">:<\/span><span class=\"mi\">19<\/span><span class=\"p\">.<\/span><span class=\"mi\">803751<\/span><span class=\"o\">+<\/span><span class=\"mi\">09<\/span>\r\n               <span class=\"mi\">3<\/span> <span class=\"o\">|<\/span> <span class=\"mi\">2022<\/span><span class=\"o\">-<\/span><span class=\"mi\">05<\/span><span class=\"o\">-<\/span><span class=\"mi\">28<\/span> <span class=\"mi\">15<\/span><span class=\"p\">:<\/span><span class=\"mi\">32<\/span><span class=\"p\">:<\/span><span class=\"mi\">19<\/span><span class=\"p\">.<\/span><span class=\"mi\">803752<\/span><span class=\"o\">+<\/span><span class=\"mi\">09<\/span>\r\n<span class=\"err\">\uff08\u4e2d\u7565\uff09<\/span>\r\n              <span class=\"mi\">13<\/span> <span class=\"o\">|<\/span> <span class=\"mi\">2022<\/span><span class=\"o\">-<\/span><span class=\"mi\">05<\/span><span class=\"o\">-<\/span><span class=\"mi\">28<\/span> <span class=\"mi\">15<\/span><span class=\"p\">:<\/span><span class=\"mi\">32<\/span><span class=\"p\">:<\/span><span class=\"mi\">19<\/span><span class=\"p\">.<\/span><span class=\"mi\">80376<\/span><span class=\"o\">+<\/span><span class=\"mi\">09<\/span>\r\n              <span class=\"mi\">14<\/span> <span class=\"o\">|<\/span> <span class=\"mi\">2022<\/span><span class=\"o\">-<\/span><span class=\"mi\">05<\/span><span class=\"o\">-<\/span><span class=\"mi\">28<\/span> <span class=\"mi\">15<\/span><span class=\"p\">:<\/span><span class=\"mi\">32<\/span><span class=\"p\">:<\/span><span class=\"mi\">19<\/span><span class=\"p\">.<\/span><span class=\"mi\">803761<\/span><span class=\"o\">+<\/span><span class=\"mi\">09<\/span>\r\n<span class=\"c1\">--More--<\/span>\r\n<\/code><\/pre>\n<p>\u5728\u8fd9\u79cd\u72b6\u6001\u4e0b\uff0c\u5f53\u6267\u884c\\watch\u547d\u4ee4\u65f6\uff0c\\watch\u547d\u4ee4\u7684\u8f93\u51fa\u7ed3\u679c\u5c06\u7531less\u547d\u4ee4\u8fdb\u884c\u9875\u9762\u63a7\u5236\uff08\u8bf7\u7559\u610fless\u547d\u4ee4\u7684\u63d0\u793a\u7b26:\uff09\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">postgres<\/span><span class=\"o\">=#<\/span> <span class=\"err\">\\<\/span><span class=\"n\">watch<\/span> <span class=\"mi\">1<\/span>\r\n\r\n\r\n   <span class=\"n\">Sat<\/span> <span class=\"mi\">28<\/span> <span class=\"n\">May<\/span> <span class=\"mi\">2022<\/span> <span class=\"mi\">03<\/span><span class=\"p\">:<\/span><span class=\"mi\">34<\/span><span class=\"p\">:<\/span><span class=\"mi\">35<\/span> <span class=\"n\">PM<\/span> <span class=\"n\">JST<\/span> <span class=\"p\">(<\/span><span class=\"k\">every<\/span> <span class=\"mi\">1<\/span><span class=\"n\">s<\/span><span class=\"p\">)<\/span>\r\n\r\n <span class=\"n\">generate_series<\/span> <span class=\"o\">|<\/span>        <span class=\"n\">clock_timestamp<\/span>\r\n<span class=\"c1\">-----------------+-------------------------------<\/span>\r\n               <span class=\"mi\">1<\/span> <span class=\"o\">|<\/span> <span class=\"mi\">2022<\/span><span class=\"o\">-<\/span><span class=\"mi\">05<\/span><span class=\"o\">-<\/span><span class=\"mi\">28<\/span> <span class=\"mi\">15<\/span><span class=\"p\">:<\/span><span class=\"mi\">34<\/span><span class=\"p\">:<\/span><span class=\"mi\">35<\/span><span class=\"p\">.<\/span><span class=\"mi\">048501<\/span><span class=\"o\">+<\/span><span class=\"mi\">09<\/span>\r\n               <span class=\"mi\">2<\/span> <span class=\"o\">|<\/span> <span class=\"mi\">2022<\/span><span class=\"o\">-<\/span><span class=\"mi\">05<\/span><span class=\"o\">-<\/span><span class=\"mi\">28<\/span> <span class=\"mi\">15<\/span><span class=\"p\">:<\/span><span class=\"mi\">34<\/span><span class=\"p\">:<\/span><span class=\"mi\">35<\/span><span class=\"p\">.<\/span><span class=\"mi\">048508<\/span><span class=\"o\">+<\/span><span class=\"mi\">09<\/span>\r\n               <span class=\"mi\">3<\/span> <span class=\"o\">|<\/span> <span class=\"mi\">2022<\/span><span class=\"o\">-<\/span><span class=\"mi\">05<\/span><span class=\"o\">-<\/span><span class=\"mi\">28<\/span> <span class=\"mi\">15<\/span><span class=\"p\">:<\/span><span class=\"mi\">34<\/span><span class=\"p\">:<\/span><span class=\"mi\">35<\/span><span class=\"p\">.<\/span><span class=\"mi\">048509<\/span><span class=\"o\">+<\/span><span class=\"mi\">09<\/span>\r\n<span class=\"err\">\uff08\u4e2d\u7565\uff09<\/span>\r\n              <span class=\"mi\">10<\/span> <span class=\"o\">|<\/span> <span class=\"mi\">2022<\/span><span class=\"o\">-<\/span><span class=\"mi\">05<\/span><span class=\"o\">-<\/span><span class=\"mi\">28<\/span> <span class=\"mi\">15<\/span><span class=\"p\">:<\/span><span class=\"mi\">34<\/span><span class=\"p\">:<\/span><span class=\"mi\">35<\/span><span class=\"p\">.<\/span><span class=\"mi\">048515<\/span><span class=\"o\">+<\/span><span class=\"mi\">09<\/span>\r\n              <span class=\"mi\">11<\/span> <span class=\"o\">|<\/span> <span class=\"mi\">2022<\/span><span class=\"o\">-<\/span><span class=\"mi\">05<\/span><span class=\"o\">-<\/span><span class=\"mi\">28<\/span> <span class=\"mi\">15<\/span><span class=\"p\">:<\/span><span class=\"mi\">34<\/span><span class=\"p\">:<\/span><span class=\"mi\">35<\/span><span class=\"p\">.<\/span><span class=\"mi\">048516<\/span><span class=\"o\">+<\/span><span class=\"mi\">09<\/span>\r\n              <span class=\"mi\">12<\/span> <span class=\"o\">|<\/span> <span class=\"mi\">2022<\/span><span class=\"o\">-<\/span><span class=\"mi\">05<\/span><span class=\"o\">-<\/span><span class=\"mi\">28<\/span> <span class=\"mi\">15<\/span><span class=\"p\">:<\/span><span class=\"mi\">34<\/span><span class=\"p\">:<\/span><span class=\"mi\">35<\/span><span class=\"p\">.<\/span><span class=\"mi\">048517<\/span><span class=\"o\">+<\/span><span class=\"mi\">09<\/span>\r\n<span class=\"p\">:<\/span>\r\n<\/code><\/pre>\n<h3>\u8bf7\u63d0\u4f9b\u76f8\u5173\u4fe1\u606f<\/h3>\n<p>\u8fd9\u9879\u6539\u8fdb\u5728Commitfest 2021-07\u4e2d\u88ab\u63d0\u4ea4\u3002<br \/>\n\u5141\u8bb8\u4e3apsql\u7684watch\u547d\u4ee4\u8bbe\u7f6e\u5206\u9875\u5668\u3002<\/p>\n<h2>\u73b0\u5728\u5df2\u7ecf\u53ef\u4ee5\u5c06\u67e5\u8be2\u4e2d\u7684\u53cc\u8fde\u5b57\u7b26\u6ce8\u91ca\u53d1\u9001\u5230\u670d\u52a1\u5668\u4e86\u3002<\/h2>\n<p>\u5728PostgreSQL\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u53cc\u7834\u6298\u53f7\uff08&#8211;\uff09\u4f5c\u4e3a\u6ce8\u91ca\u7b26\u53f7\u3002\u53cc\u7834\u6298\u53f7\u540e\u7684\u5185\u5bb9\uff0c\u76f4\u5230\u884c\u672b\uff08\u6362\u884c\u7b26\uff09\u90fd\u88ab\u89c6\u4e3a\u6ce8\u91ca\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">SELECT<\/span> <span class=\"mi\">1<\/span> <span class=\"c1\">-- 1\u3092\u8fd4\u3059``<\/span>\r\n<\/code><\/pre>\n<p>\u4ecePostgreSQL 14\u4e4b\u524d\uff0c\u901a\u8fc7\u53cc\u7834\u6298\u53f7\u6dfb\u52a0\u7684\u6ce8\u91ca\u5728\u53d1\u9001\u7ed9\u670d\u52a1\u5668\u4e4b\u524d\u4f1a\u5728psql\u4e2d\u88ab\u5220\u9664\u3002<br \/>\n\u4ecePostgreSQL 15\u5f00\u59cb\uff0c\u53cc\u7834\u6298\u53f7\u6dfb\u52a0\u7684\u6ce8\u91ca\u5b57\u7b26\u4e32\u4e5f\u4f1a\u88ab\u53d1\u9001\u5230\u670d\u52a1\u5668\u3002<\/p>\n<p>\u4e3e\u4f8b\u6765\u8bf4\uff0c\u5f53 log_statement=&#8217;all&#8217; \u88ab\u8bbe\u7f6e\u65f6\uff0c\u76f4\u5230 PostgreSQL 14\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">test<\/span><span class=\"o\">=#<\/span> <span class=\"k\">SELECT<\/span> <span class=\"s1\">'nuko'<\/span><span class=\"p\">,<\/span> <span class=\"c1\">-- \u306b\u3083\u30fc\u3093<\/span>\r\n<span class=\"mi\">2<\/span><span class=\"p\">;<\/span>\r\n <span class=\"o\">?<\/span><span class=\"k\">column<\/span><span class=\"o\">?<\/span> <span class=\"o\">|<\/span> <span class=\"o\">?<\/span><span class=\"k\">column<\/span><span class=\"o\">?<\/span>\r\n<span class=\"c1\">----------+----------<\/span>\r\n <span class=\"n\">nuko<\/span>     <span class=\"o\">|<\/span>        <span class=\"mi\">2<\/span>\r\n<span class=\"p\">(<\/span><span class=\"mi\">1<\/span> <span class=\"k\">row<\/span><span class=\"p\">)<\/span>\r\n\r\n<span class=\"n\">test<\/span><span class=\"o\">=#<\/span>\r\n<\/code><\/pre>\n<p>\u6267\u884c\u6b64\u67e5\u8be2\u65f6\uff0c\u53cc\u7834\u6298\u53f7\u6ce8\u91ca\u4e2d\u7684\u201c\u306b\u3083\u30fc\u3093\u201d\u672a\u8bb0\u5f55\u5728\u670d\u52a1\u5668\u65e5\u5fd7\u4e2d\u3002<\/p>\n<p>\u7528\u7b80\u4f53\u4e2d\u6587\u7ffb\u8bd1\uff1a<br \/>\n\u5728PostgreSQL 14\u4e2d\u7684\u670d\u52a1\u5668\u65e5\u5fd7\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"mi\">2022<\/span><span class=\"o\">-<\/span><span class=\"mi\">05<\/span><span class=\"o\">-<\/span><span class=\"mi\">28<\/span> <span class=\"mi\">10<\/span><span class=\"p\">:<\/span><span class=\"mi\">17<\/span><span class=\"p\">:<\/span><span class=\"mi\">42<\/span><span class=\"p\">.<\/span><span class=\"mi\">067<\/span> <span class=\"n\">JST<\/span> <span class=\"p\">[<\/span><span class=\"mi\">20709<\/span><span class=\"p\">]<\/span> <span class=\"n\">LOG<\/span><span class=\"p\">:<\/span>  <span class=\"k\">statement<\/span><span class=\"p\">:<\/span> <span class=\"k\">SELECT<\/span> <span class=\"s1\">'nuko'<\/span><span class=\"p\">,<\/span>\r\n        <span class=\"mi\">2<\/span><span class=\"p\">;<\/span>\r\n<\/code><\/pre>\n<p>\u7136\u800c\uff0c\u4ecePostgreSQL 15\u5f00\u59cb\uff0c\u5373\u4f7f\u5728\u53cc\u51cf\u53f7\u6ce8\u91ca\u4e2d\u4e5f\u5c06\u8bb0\u5f55&#8221;\u306b\u3083\u30fc\u3093&#8221;\u5230\u670d\u52a1\u5668\u65e5\u5fd7\u4e2d\uff08\u4f7f\u7528pgaudit\u7b49\u5ba1\u8ba1\u6269\u5c55\u529f\u80fd\u65f6\u4e5f\u662f\u4e00\u6837\uff09\u3002<\/p>\n<p>\u5728 PostgreSQL 15 \u4e2d\u7684\u670d\u52a1\u5668\u65e5\u5fd7\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"mi\">2022<\/span><span class=\"o\">-<\/span><span class=\"mi\">05<\/span><span class=\"o\">-<\/span><span class=\"mi\">28<\/span> <span class=\"mi\">10<\/span><span class=\"p\">:<\/span><span class=\"mi\">10<\/span><span class=\"p\">:<\/span><span class=\"mi\">49<\/span><span class=\"p\">.<\/span><span class=\"mi\">932<\/span> <span class=\"n\">JST<\/span> <span class=\"p\">[<\/span><span class=\"mi\">20606<\/span><span class=\"p\">]<\/span> <span class=\"n\">LOG<\/span><span class=\"p\">:<\/span>  <span class=\"k\">statement<\/span><span class=\"p\">:<\/span> <span class=\"k\">SELECT<\/span> <span class=\"s1\">'nuko'<\/span><span class=\"p\">,<\/span> <span class=\"c1\">-- \u306b\u3083\u30fc\u3093<\/span>\r\n        <span class=\"mi\">2<\/span><span class=\"p\">;<\/span>\r\n<\/code><\/pre>\n<p>\u56e0\u6b64\uff0c\u4f7f\u7528PostgreSQL 15\u53ca\u66f4\u9ad8\u7248\u672c\u7684psql\u65f6\uff0c\u5fc5\u987b\u6ce8\u610f\u5728\u53cc\u7834\u6298\u53f7\u6ce8\u91ca\u4e2d\u4e0d\u8981\u5199\u4e0b\u5947\u602a\u7684\u6ce8\u91ca\u3002\u55b5~<\/p>\n<h3>\u8bf7\u63d0\u4f9b\u76f8\u5173\u8d44\u6599<\/h3>\n<p>\u6211\u627e\u4e0d\u5230\u76f4\u63a5\u6307\u5411\u6b64\u6539\u8fdb\u9879\u76ee\u7684Commitfest\u9879\u76ee\u3002<br \/>\n\u5c3d\u7ba1\u8fd9\u4e2a\u9879\u76ee\u4f3c\u4e4e\u4e0e\u76f8\u5173\u6027\u6709\u5173\uff0c\u4f46\u6211\u6ca1\u6709\u6df1\u7a76\u3002<br \/>\n\u5728PSQL\u4ea4\u4e92\u6a21\u5f0f\u5386\u53f2\u8bb0\u5f55\u4e2d\u6b63\u786e\u5904\u7406\u7a7a\u767d\/\u6ce8\u91ca\u884c\u3002<\/p>\n<h2>\u6539\u5584psql\u7684readline\u529f\u80fd\uff0c\u4ee5\u63d2\u5165\u53cc\u7834\u6298\u53f7\u4f5c\u4e3a\u6ce8\u91ca\u6807\u8bb0\u3002<\/h2>\n<p>\u76ee\u524d\u65e0\u6cd5\u4e86\u89e3\u73b0\u72b6\u548c\u6539\u5584\u7684\u5185\u5bb9\u3002<br \/>\n\u9605\u8bfb\u53d1\u884c\u8bf4\u660e\u53ef\u77e5\u3002<\/p>\n<blockquote><p>\u8c03\u6574psql\u7684readline meta-\uff03\uff0c\u63d2\u5165\u4e00\u4e2a\u53cc\u8fde\u5b57\u7b26\u7684\u6ce8\u91ca\u6807\u8bb0\uff08Tom Lane\uff09<br \/>\n\u4e4b\u524d\u63d2\u5165\u4e86\u4e00\u4e2a\u65e0\u7528\u7684\u4e95\u53f7\u6807\u8bb0\u3002<\/p><\/blockquote>\n<p>\u5c3d\u7ba1\u5728\u7248\u672c\u8bf4\u660e\u4e2d\u5199\u5f97\u5f88\u6e05\u695a\uff0c\u4f46\u4ec5\u4ece\u7248\u672c\u8bf4\u660e\u4e2d\u65e0\u6cd5\u786e\u5207\u4e86\u89e3\u95ee\u9898\u662f\u5982\u4f55\u89e3\u51b3\u7684\u3002\u6211\u4e5f\u65e0\u6cd5\u8ddf\u4e0a\u673a\u5668\u5b66\u4e60\u7684\u8fdb\u5c55\u3002\u6211\u5728\u6267\u884c PostgreSQL 14.3 \u548c PostgreSQL 15 beta1 \u4e2d\u5e26\u6709\u53cc\u8fde\u5b57\u7b26\u4e14\u8de8\u8d8a\u591a\u884c\u7684\u67e5\u8be2\u540e\uff0c\u5c1d\u8bd5\u901a\u8fc7 readline \u663e\u793a\u547d\u4ee4\u5386\u53f2\u8bb0\u5f55\uff0c\u4f46\u6211\u4e0d\u592a\u6e05\u695a\u6709\u4ec0\u4e48\u4e0d\u540c&#8230;\u3002<\/p>\n<h3>\u53ef\u4ee5\u63d0\u4f9b\u7684\u76f8\u5173\u4fe1\u606f<\/h3>\n<p>\u6211\u8ba4\u4e3a\u8fd9\u9879\u6539\u8fdb\u53ef\u80fd\u662f\u5728Commitfest 2022-01\u4e2d\u63d0\u4ea4\u7684\u3002<br \/>\n\u6539\u8fdb\u4e86PSQL\u4ea4\u4e92\u6a21\u5f0f\u5386\u53f2\u8bb0\u5f55\u4e2d\u5bf9\u7a7a\u767d\/\u6ce8\u91ca\u884c\u7684\u6b63\u786e\u5904\u7406\u3002<\/p>\n<h2>psql\u73b0\u5728\u53ef\u4ee5\u663e\u793a\u6240\u6709\u591a\u4e2a\u67e5\u8be2\u7ed3\u679c\u3002<\/h2>\n<p>\u5728 PostgreSQL 14 \u4e4b\u524d\uff0c\u5982\u679c\u4ece psql \u6267\u884c\u591a\u4e2a\u67e5\u8be2\uff0c\u53ea\u4f1a\u663e\u793a\u6700\u540e\u4e00\u4e2a\u67e5\u8be2\u7684\u7ed3\u679c\u3002<br \/>\n\u8fd9\u91cc\u6240\u8bf4\u7684&#8221;\u591a\u4e2a\u67e5\u8be2&#8221;\u4e00\u5f00\u59cb\u6709\u70b9\u96be\u4ee5\u7406\u89e3\uff0c\u4f46\u4f3c\u4e4e\u662f\u6307\u7531 \\; \u5206\u9694\u7684\u591a\u4e2a\u67e5\u8be2\uff0c\u7c7b\u4f3c\u4e8e\u4ee5\u4e0b\u5f62\u5f0f\uff1a<br \/>\nSELECT 1; SELECT 2; SELECT 3;<\/p>\n<p>\u5982\u679c\u5728PostgreSQL 14\u4e2d\u8fd0\u884c\u4ee5\u4e0a\u67e5\u8be2\uff0c\u53ea\u4f1a\u663e\u793a\u6700\u540e\u4e00\u4e2aSELECT 3\u7684\u7ed3\u679c\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">test<\/span><span class=\"o\">=#<\/span> <span class=\"k\">SELECT<\/span> <span class=\"mi\">1<\/span> <span class=\"err\">\\<\/span><span class=\"p\">;<\/span> <span class=\"k\">SELECT<\/span> <span class=\"mi\">2<\/span> <span class=\"err\">\\<\/span><span class=\"p\">;<\/span> <span class=\"k\">SELECT<\/span> <span class=\"mi\">3<\/span><span class=\"p\">;<\/span>\r\n <span class=\"o\">?<\/span><span class=\"k\">column<\/span><span class=\"o\">?<\/span>\r\n<span class=\"c1\">----------<\/span>\r\n        <span class=\"mi\">3<\/span>\r\n<span class=\"p\">(<\/span><span class=\"mi\">1<\/span> <span class=\"k\">row<\/span><span class=\"p\">)<\/span>\r\n\r\n<span class=\"n\">test<\/span><span class=\"o\">=#<\/span>\r\n<\/code><\/pre>\n<p>\u5728PostgreSQL 15\u4e2d\uff0c\u73b0\u5728\u67e5\u8be2\u7ed3\u679c\u5c06\u663e\u793a\u5982\u4e0b\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">postgres<\/span><span class=\"o\">=#<\/span> <span class=\"k\">SELECT<\/span> <span class=\"mi\">1<\/span> <span class=\"err\">\\<\/span><span class=\"p\">;<\/span> <span class=\"k\">SELECT<\/span> <span class=\"mi\">2<\/span> <span class=\"err\">\\<\/span><span class=\"p\">;<\/span> <span class=\"k\">SELECT<\/span> <span class=\"mi\">3<\/span><span class=\"p\">;<\/span>\r\n <span class=\"o\">?<\/span><span class=\"k\">column<\/span><span class=\"o\">?<\/span>\r\n<span class=\"c1\">----------<\/span>\r\n        <span class=\"mi\">1<\/span>\r\n<span class=\"p\">(<\/span><span class=\"mi\">1<\/span> <span class=\"k\">row<\/span><span class=\"p\">)<\/span>\r\n\r\n <span class=\"o\">?<\/span><span class=\"k\">column<\/span><span class=\"o\">?<\/span>\r\n<span class=\"c1\">----------<\/span>\r\n        <span class=\"mi\">2<\/span>\r\n<span class=\"p\">(<\/span><span class=\"mi\">1<\/span> <span class=\"k\">row<\/span><span class=\"p\">)<\/span>\r\n\r\n <span class=\"o\">?<\/span><span class=\"k\">column<\/span><span class=\"o\">?<\/span>\r\n<span class=\"c1\">----------<\/span>\r\n        <span class=\"mi\">3<\/span>\r\n<span class=\"p\">(<\/span><span class=\"mi\">1<\/span> <span class=\"k\">row<\/span><span class=\"p\">)<\/span>\r\n\r\n<span class=\"n\">postgres<\/span><span class=\"o\">=#<\/span>\r\n<\/code><\/pre>\n<p>\u6b64\u5916\uff0c\u901a\u8fc7\u7981\u7528psql\u53d8\u91cfSHOW_ALL_RESULTS\uff08\u8fd9\u4e2a\u53d8\u91cf\u4e5f\u662f\u4ecePostgreSQL 15\u5f15\u5165\u7684\uff09\u53ef\u4ee5\u5c06\u6b64\u529f\u80fd\u8fd8\u539f\u4e3aPostgreSQL 14\u7684\u884c\u4e3a\uff08\u4ec5\u663e\u793a\u6700\u540e\u4e00\u4e2a\u67e5\u8be2\uff09\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">postgres<\/span><span class=\"o\">=#<\/span> <span class=\"err\">\\<\/span><span class=\"k\">set<\/span> <span class=\"n\">SHOW_ALL_RESULTS<\/span> <span class=\"k\">off<\/span>\r\n<span class=\"n\">postgres<\/span><span class=\"o\">=#<\/span> <span class=\"k\">SELECT<\/span> <span class=\"mi\">1<\/span> <span class=\"err\">\\<\/span><span class=\"p\">;<\/span> <span class=\"k\">SELECT<\/span> <span class=\"mi\">2<\/span> <span class=\"err\">\\<\/span><span class=\"p\">;<\/span> <span class=\"k\">SELECT<\/span> <span class=\"mi\">3<\/span><span class=\"p\">;<\/span>\r\n <span class=\"o\">?<\/span><span class=\"k\">column<\/span><span class=\"o\">?<\/span>\r\n<span class=\"c1\">----------<\/span>\r\n        <span class=\"mi\">3<\/span>\r\n<span class=\"p\">(<\/span><span class=\"mi\">1<\/span> <span class=\"k\">row<\/span><span class=\"p\">)<\/span>\r\n\r\n<span class=\"n\">postgres<\/span><span class=\"o\">=#<\/span>\r\n<\/code><\/pre>\n<h3>\u8bf7\u63d0\u4f9b\u76f8\u5173\u8d44\u6599<\/h3>\n<p>\u8fd9\u4e2a\u6539\u8fdb\u5728Commitfest 2022-03\u4e2d\u88ab\u63d0\u4ea4\u3002<br \/>\npsql &#8211; \u6dfb\u52a0SHOW_ALL_RESULTS\u9009\u9879<\/p>\n<h2>\u6539\u826fTab\u8865\u5168<\/h2>\n<p>\u4f5c\u4e3apsql\u7684\u4e00\u4e2a\u6613\u4e8e\u4f7f\u7528\u7684\u7279\u70b9\u4e4b\u4e00\uff0c\u53ef\u4ee5\u63d0\u5230\u5b83\u5177\u6709SQL\u8bed\u6cd5\u7684\u6807\u7b7e\u8865\u5168\u548c\u6570\u636e\u5e93\u5bf9\u8c61\u7684\u6807\u7b7e\u8865\u5168\u529f\u80fd\u3002\u8fd9\u662f\u901a\u8fc7\u4f7f\u7528readline\u529f\u80fd\u5b9e\u73b0\u7684\u3002<br \/>\n\uff08\u76f8\u53cd\u5730\uff0c\u6ca1\u6709\u5bf9readline\u63d0\u4f9b\u652f\u6301\u7684psql\u5b9e\u9645\u4e0a\u975e\u5e38\u96be\u7528\u3002\u8fd9\u662f\u6307\u9644\u5e26\u5728Windows\u7248PostgreSQL\u4e2d\u7684psql\uff01\uff09<\/p>\n<p>\u5728\u53d1\u5e03\u8bf4\u660e\u4e2d\uff0c\u53ea\u5199\u4e86\u201c\u6539\u8fdb\u4e86\u9009\u9879\u5361\u8865\u5b8c\u201d\uff0c\u65e0\u6cd5\u4ece\u53d1\u5e03\u8bf4\u660e\u4e2d\u5f97\u77e5\u5177\u4f53\u7684\u6539\u8fdb\u5185\u5bb9&#8230;\u56e0\u6b64\uff0c\u6211\u4eec\u53ea\u80fd\u5728Commitfest\u4e2d\u5217\u51fa\u4e0epsql\u9009\u9879\u5361\u8865\u5b8c\u76f8\u5173\u7684\u9879\u76ee\u3002<\/p>\n<p>\u4ee5\u4e0b\u662f\u672c\u6b21\u7c7b\u4f3cTAB\u8865\u5168\u6539\u8fdb\u7684\u9879\u76ee\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">CREATE PULICATION<\/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\">ALTER TABLE .. VALIDATE CONSTRAINT<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u5927\u6587\u5b57(upper charcter)\u5165\u529b\u6642\u306eTAB\u88dc\u5b8c\u306b\u5bfe\u5fdc<\/ul>\n<h3>\u521b\u9020\u51fa\u7248\u7269<\/h3>\n<p>\u4ee5\u4e0b\u662f\u4e0eCommitfest\uff08Commitfest 2021-07\uff09\u76f8\u5173\u7684Commitfest\u9879\u76ee\uff1a<br \/>\n\u4e3aCREATE PUBLICATION\u547d\u4ee4\u63d0\u4f9bpsql\u6807\u7b7e\u81ea\u52a8\u5b8c\u6210\u529f\u80fd\u3002<\/p>\n<p>\u6211\u5c1d\u8bd5\u4e86\u8fd9\u5c01\u90ae\u4ef6\u4e2d\u63d0\u5230\u7684\u51e0\u4e2a\u6848\u4f8b\uff0c\u4f46\u5728PostgreSQL 14.3\u548cPostgreSQL 15 beta1\u4e2d\uff0cTAB\u8865\u5168\u7684\u884c\u4e3a\u6ca1\u6709\u5dee\u5f02\u3002<br \/>\n\u662f\u4e0d\u662fPostgreSQL 14.3\u5df2\u7ecf\u8fdb\u884c\u4e86\u540e\u8865\u4fee\u590d\uff1f<\/p>\n<h3>\u9a8c\u8bc1\u7ea6\u675f\u7684\u8868\u683c\u7ed3\u6784\u3002<\/h3>\n<p>\u5bf9\u5e94\u7684Commitfest\u9879\u76ee\uff08Commitfest 2022-01\uff09\u5982\u4e0b\u3002<br \/>\npsql\uff1a\u5728ALTER TABLE .. VALIDATE CONSTRAINT\u7684\u8868\u683c\u81ea\u52a8\u8865\u5168\u4e2d\u6392\u9664\u6709\u6548\u7684\u7ea6\u675f\u6761\u4ef6\u3002<\/p>\n<p>\u8fd9\u4e5f\u662fPostgreSQL 14.3\u548cPostgreSQL 15 beta1\u4e4b\u95f4\u7684TAB\u8865\u5168\u884c\u4e3a\u6ca1\u6709\u533a\u522b\u3002<br \/>\n\u8fd9\u53ef\u80fd\u610f\u5473\u7740PostgreSQL 14.3\u5df2\u7ecf\u8fdb\u884c\u4e86\u8865\u4e01\u5904\u7406\uff1f<\/p>\n<h3>\u652f\u6301\u5bf9\u4e8e\u8f93\u5165\u5927\u5199\u5b57\u6bcd\u65f6\u7684TAB\u8865\u5168\u529f\u80fd\u3002<\/h3>\n<p>\u5bf9\u5e94\u7684Commitfest\u9879\u76ee\uff08Commitfest 2022-01\uff09\u5982\u4e0b\u3002<br \/>\n\u5728psql\u4e2d\u652f\u6301\u5bf9\u5927\u5199\u5b57\u7b26\u8f93\u5165\u7684\u9009\u9879\u5361\u8865\u5168\u529f\u80fd\u3002<\/p>\n<p>\u6211\u6ca1\u6709\u5b8c\u5168\u7406\u89e3\u8bae\u8bba\u90ae\u4ef6\uff0c\u4f46\u662fSET\/RESET\/SHOW\u8fd9\u4e09\u4e2a\u547d\u4ee4\u7684\u547d\u4ee4\u540d\u79f0\u65e0\u8bba\u662f\u5c0f\u5199\u8fd8\u662f\u5927\u5199\uff0c\u90fd\u53ef\u4ee5\u901a\u8fc7TAB\u8865\u5168\uff0c\u8fd9\u6837\u89e3\u91ca\u53ef\u4ee5\u5417\uff1f<\/p>\n<p>\u53ea\u662f\uff0cPostgreSQL 14.3\u548cPostgreSQL 15 beta1\u5728TAB\u8865\u5168\u884c\u4e3a\u4e0a\u6ca1\u6709\u5dee\u5f02\uff08\u5c3d\u7ba1\u5728\u53c2\u6570\u5c55\u5f00\u65b9\u9762\uff0c15\u7248\u672c\u7684\u53c2\u6570\u6570\u91cf\u589e\u52a0\u4e86\uff0c\u6240\u4ee5\u5b58\u5728\u4e00\u4e9b\u5dee\u522b\uff09\u3002PostgreSQL 14.3\u5df2\u7ecf\u8fdb\u884c\u4e86\u56de\u8865\u4fee\u590d\uff1f<\/p>\n<h3>\u53c2\u9605\u8d44\u6599<\/h3>\n<p>\u8fd9\u4e2a\u6539\u8fdb\u5728\u4ee5\u4e0b\u7684Commitfest\u6d3b\u52a8\u4e2d\u63d0\u4ea4\u5e76\u5f97\u5230\u4e86\u63a5\u53d7\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">psql tab auto-complete for CREATE PUBLICATION<\/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\">psql: exclude valid constraints in tab-complete for ALTER TABLE .. VALIDATE CONSTRAINT<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">Support tab completion for upper character inputs in psql<\/ul>\n<h2>\u4ec5\u652f\u6301\u8fd0\u884cPostgreSQL 9.2\u53ca\u66f4\u9ad8\u7248\u672c\u7684\u670d\u52a1\u5668\u7684psql\u3002<\/h2>\n<p>\u8fd9\u4e2a\u4fee\u6b63\u5728Commitfest\u7684\u5217\u8868\u4e2d\u627e\u4e0d\u5230\u3002<br \/>\n\u5728\u90ae\u4ef6\u5217\u8868\u4e2d\u641c\u7d22\uff0c\u4f3c\u4e4e\u8fd9\u4e2a\u95ee\u9898\u9002\u7528\u4e8epgsql-commiters\u90ae\u4ef6\u5217\u8868\u4e2d\u7684\u5185\u5bb9\u3002<br \/>\npgsql\uff1a\u5220\u9664\u5bf99.2\u4e4b\u524d\u670d\u52a1\u5668\u7248\u672c\u7684psql\u652f\u6301\u3002<\/p>\n<p>\u53ea\u9700\u8981\u4e00\u79cd\u9009\u62e9: \u7531\u4e8ePostgreSQL 9.1\u65e9\u5df2\u5230\u8fbe\u7ec8\u6b62\u751f\u547d\u5468\u671f\uff0c\u6240\u4ee5\u53ef\u80fd\u4e0d\u4f1a\u6709\u592a\u591a\u60c5\u51b5\u5bfc\u81f4\u56f0\u6270\u3002\u4e0d\u8fc7\uff0c\u4ecePostgreSQL 15\u5f00\u59cb\uff0c\u5982\u679c\u5c1d\u8bd5\u8fde\u63a5\u5230\u8fc7\u65f6\u7684\u670d\u52a1\u5668\u7248\u672c\uff0c\u5c06\u4f1a\u6536\u5230\u8b66\u544a\u3002<\/p>\n<p>\u5b9e\u9645\u4e0a\uff0c\u5728\u642d\u5efaPostgreSQL 9.1.24\u670d\u52a1\u5668\u5e76\u4e0ePostgreSQL 15 beta1\u8fdb\u884c\u8fde\u63a5\u65f6\uff0c\u4f1a\u51fa\u73b0\u4e00\u4e9bpsql\u529f\u80fd\u53ef\u80fd\u65e0\u6cd5\u6b63\u5e38\u5de5\u4f5c\u7684\u8b66\u544a\u3002<\/p>\n<p>\u4f46\u662f\u8bf7\u6ce8\u610f\uff0c\u4ec5\u4f1a\u663e\u793a\u8b66\u544a\u800c\u4e0d\u4f1a\u62d2\u7edd\u8fde\u63a5\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nv\">$ <\/span>\/home\/ec2-user\/pgsql\/pgsql-9.1\/bin\/pg_ctl <span class=\"nt\">-D<\/span> \/tmp\/pg091 <span class=\"nt\">-l<\/span> logfile start\r\nserver starting\r\n<span class=\"o\">[<\/span>ec2-user@ip-10-0-1-10 postgresql-9.1.24]<span class=\"nv\">$ <\/span>~\/pgsql\/pgsql-15b1\/bin\/psql <span class=\"nt\">-p<\/span> 10091 postgres\r\npsql <span class=\"o\">(<\/span>15beta1, server 9.1.24<span class=\"o\">)<\/span>\r\nWARNING: psql major version 15, server major version 9.1.\r\n         Some psql features might not work.\r\nType <span class=\"s2\">\"help\"<\/span> <span class=\"k\">for <\/span>help.\r\n\r\n<span class=\"nv\">postgres<\/span><span class=\"o\">=<\/span><span class=\"c\"># SELECT version();<\/span>\r\n                                                    version\r\n<span class=\"nt\">----------------------------------------------------------------------------------------------------------------<\/span>\r\n PostgreSQL 9.1.24 on x86_64-unknown-linux-gnu, compiled by gcc <span class=\"o\">(<\/span>GCC<span class=\"o\">)<\/span> 7.3.1 20180712 <span class=\"o\">(<\/span>Red Hat 7.3.1-13<span class=\"o\">)<\/span>, 64-bit\r\n<span class=\"o\">(<\/span>1 row<span class=\"o\">)<\/span>\r\n\r\n<span class=\"nv\">postgres<\/span><span class=\"o\">=<\/span><span class=\"c\">#<\/span>\r\n<\/code><\/pre>\n<h2>\u6539\u5584 psql \u4e2d\u7684 \\password \u547d\u4ee4<\/h2>\n<p>\u8fd9\u4e2a\u6539\u8fdb\u5728Commitfest 2021-11\u4e2d\u5df2\u7ecf\u88ab\u63d0\u4ea4\u3002<br \/>\n\u6539\u8fdbpsql\u7684\\password\u547d\u4ee4\u3002<br \/>\n\u867d\u7136\u539f\u56e0\u4e0d\u660e\uff0c\u4f46\u5728PostgreSQL 15 beta1\u7684\u53d1\u5e03\u8bf4\u660e\u4e2d\u6ca1\u6709\u63d0\u5230\u8fd9\u4e2a\u9879\u76ee\u3002<\/p>\n<p>\u6839\u636e\u6211\u7684\u7406\u89e3\uff08\u5728\u5b9e\u8df5\u4e2d\u8bd5\u8fc7\u7684\u611f\u89c9\uff09\uff0c<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">PostgreSQL 14\u307e\u3067\u306f\u3001\\password\u3067\u30d1\u30b9\u30ef\u30fc\u30c9\u5909\u66f4\u3092\u8a66\u307f\u3066\u3044\u308b\u6700\u4e2d\u306b\u306f\u3001CTRL+C\u3067\u306e\u4e2d\u65ad\u306f\u3067\u304d\u306a\u3044\u3002<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">PostgreSQL 15\u3067\u306f\u3001\\password\u3067\u30d1\u30b9\u30ef\u30fc\u30c9\u5909\u66f4\u3092\u8a66\u307f\u3066\u3044\u308b\u6700\u4e2d\u306b\u3001CTRL+C\u3067\u306e\u4e2d\u65ad\u304c\u53ef\u80fd\u306b\u306a\u3063\u305f<\/ul>\n<p>\u6211\u5bf9\u6b64\u7684\u89e3\u91ca\u662f\uff0c\u4f46\u4e0d\u77e5\u9053\u662f\u5426\u6b63\u786e&#8230;&#8230;\uff08\u6211\u65e0\u6cd5\u8ddf\u4e0a\u673a\u5668\u5b66\u4e60\u7684\u8ba8\u8bba&#8230;&#8230;\uff09<\/p>\n<h2>\u6539\u5584\u4e86psql\u4e2d\u7528\u4e8e\u8ba1\u7b97\u8868\u60c5\u7b26\u53f7\u5bbd\u5ea6\u7684\u95ee\u9898<\/h2>\n<p>\u6211\u8fd8\u6ca1\u6709\u786e\u8ba4\u8fd9\u9879\u6539\u8fdb\u5185\u5bb9&#8230;&#8230;<br \/>\n\u867d\u7136\u5728\u53d1\u5e03\u8bf4\u660e\u4e2d\u6ca1\u6709\u63d0\u5230\uff0c\u4f46\u5728Commitfest\u4e2d\u63d0\u4ea4\u7684\u9879\u76ee\u4e2d\u5305\u542b\u4e86\u8fd9\u9879\u5185\u5bb9\u3002<\/p>\n<p>\u66ab\u6642\u5148\u8a66\u8457\u5728psql\u4e0a\u57f7\u884c\u5305\u542b\u8868\u60c5\u7b26\u865f\u7684\u67e5\u8a62\uff08\u4f7f\u7528Putty\u65e5\u6587\u7248+\u81ea\u88fd\u88dc\u4e01\u7248\u57f7\u884c\u74b0\u5883\uff09, \u4f46\u6211\u7121\u6cd5\u5bdf\u89ba\u5230PostgreSQL 14.3\u548cPostgreSQL 15 beta1\u4e4b\u9593\u7684\u5dee\u7570\u3002\uff08\u5169\u8005\u90fd\u7a0d\u5fae\u6709\u4e9b\u504f\u5dee\uff09<\/p>\n<p>&#8220;PostgreSQL 14.3&#8221; \u53ef\u4ee5\u88ab\u6539\u5199\u4e3a &#8220;PostgreSQL 14.3 \u7248\u672c&#8221;\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"err\">$<\/span> <span class=\"o\">~\/<\/span><span class=\"n\">pgsql<\/span><span class=\"o\">\/<\/span><span class=\"n\">pgsql<\/span><span class=\"o\">-<\/span><span class=\"mi\">15<\/span><span class=\"n\">b1<\/span><span class=\"o\">\/<\/span><span class=\"n\">bin<\/span><span class=\"o\">\/<\/span><span class=\"n\">psql<\/span> <span class=\"o\">-<\/span><span class=\"n\">U<\/span> <span class=\"n\">postgres<\/span> <span class=\"o\">-<\/span><span class=\"n\">p<\/span> <span class=\"mi\">10014<\/span> <span class=\"n\">test<\/span> <span class=\"o\">-<\/span><span class=\"n\">e<\/span> <span class=\"o\">-<\/span><span class=\"n\">f<\/span> <span class=\"n\">emoji<\/span><span class=\"p\">.<\/span><span class=\"k\">sql<\/span>\r\n<span class=\"k\">CREATE<\/span> <span class=\"k\">TEMP<\/span> <span class=\"k\">TABLE<\/span> <span class=\"n\">hoge<\/span> <span class=\"p\">(<\/span><span class=\"n\">n<\/span> <span class=\"nb\">text<\/span><span class=\"p\">,<\/span> <span class=\"n\">i<\/span> <span class=\"nb\">text<\/span><span class=\"p\">,<\/span> <span class=\"n\">v<\/span> <span class=\"nb\">text<\/span><span class=\"p\">);<\/span>\r\n<span class=\"k\">CREATE<\/span> <span class=\"k\">TABLE<\/span>\r\n<span class=\"k\">INSERT<\/span> <span class=\"k\">INTO<\/span> <span class=\"n\">hoge<\/span> <span class=\"k\">VALUES<\/span>\r\n<span class=\"p\">(<\/span><span class=\"s1\">'elephant'<\/span><span class=\"p\">,<\/span> <span class=\"s1\">'?'<\/span><span class=\"p\">,<\/span> <span class=\"s1\">'paon'<\/span><span class=\"p\">),<\/span>\r\n<span class=\"p\">(<\/span><span class=\"s1\">'cat'<\/span><span class=\"p\">,<\/span> <span class=\"s1\">'?'<\/span><span class=\"p\">,<\/span> <span class=\"s1\">'nya-n'<\/span><span class=\"p\">),<\/span>\r\n<span class=\"p\">(<\/span><span class=\"s1\">'dolphin'<\/span><span class=\"p\">,<\/span> <span class=\"s1\">'?'<\/span><span class=\"p\">,<\/span> <span class=\"s1\">'kyu-'<\/span><span class=\"p\">)<\/span>\r\n<span class=\"p\">;<\/span>\r\n<span class=\"k\">INSERT<\/span> <span class=\"mi\">0<\/span> <span class=\"mi\">3<\/span>\r\n<span class=\"k\">SELECT<\/span> <span class=\"o\">*<\/span> <span class=\"k\">FROM<\/span> <span class=\"n\">hoge<\/span><span class=\"p\">;<\/span>\r\n    <span class=\"n\">n<\/span>     <span class=\"o\">|<\/span> <span class=\"n\">i<\/span>  <span class=\"o\">|<\/span>   <span class=\"n\">v<\/span>\r\n<span class=\"c1\">----------+----+-------<\/span>\r\n <span class=\"n\">elephant<\/span> <span class=\"o\">|<\/span> <span class=\"err\">?<\/span> <span class=\"o\">|<\/span> <span class=\"n\">paon<\/span>\r\n <span class=\"n\">cat<\/span>      <span class=\"o\">|<\/span> <span class=\"err\">?<\/span> <span class=\"o\">|<\/span> <span class=\"n\">nya<\/span><span class=\"o\">-<\/span><span class=\"n\">n<\/span>\r\n <span class=\"n\">dolphin<\/span>  <span class=\"o\">|<\/span> <span class=\"err\">?<\/span> <span class=\"o\">|<\/span> <span class=\"n\">kyu<\/span><span class=\"o\">-<\/span>\r\n<span class=\"p\">(<\/span><span class=\"mi\">3<\/span> <span class=\"k\">rows<\/span><span class=\"p\">)<\/span>\r\n<\/code><\/pre>\n<p>PostgreSQL 15 beta1 15\u8d1d\u58541\u7248<\/p>\n<pre class=\"post-pre\"><code><span class=\"err\">$<\/span> <span class=\"o\">~\/<\/span><span class=\"n\">pgsql<\/span><span class=\"o\">\/<\/span><span class=\"n\">pgsql<\/span><span class=\"o\">-<\/span><span class=\"mi\">15<\/span><span class=\"n\">b1<\/span><span class=\"o\">\/<\/span><span class=\"n\">bin<\/span><span class=\"o\">\/<\/span><span class=\"n\">psql<\/span> <span class=\"o\">-<\/span><span class=\"n\">U<\/span> <span class=\"n\">postgres<\/span> <span class=\"o\">-<\/span><span class=\"n\">p<\/span> <span class=\"mi\">10015<\/span> <span class=\"n\">test<\/span> <span class=\"o\">-<\/span><span class=\"n\">e<\/span> <span class=\"o\">-<\/span><span class=\"n\">f<\/span> <span class=\"n\">emoji<\/span><span class=\"p\">.<\/span><span class=\"k\">sql<\/span>\r\n<span class=\"k\">CREATE<\/span> <span class=\"k\">TEMP<\/span> <span class=\"k\">TABLE<\/span> <span class=\"n\">hoge<\/span> <span class=\"p\">(<\/span><span class=\"n\">n<\/span> <span class=\"nb\">text<\/span><span class=\"p\">,<\/span> <span class=\"n\">i<\/span> <span class=\"nb\">text<\/span><span class=\"p\">,<\/span> <span class=\"n\">v<\/span> <span class=\"nb\">text<\/span><span class=\"p\">);<\/span>\r\n<span class=\"k\">CREATE<\/span> <span class=\"k\">TABLE<\/span>\r\n<span class=\"k\">INSERT<\/span> <span class=\"k\">INTO<\/span> <span class=\"n\">hoge<\/span> <span class=\"k\">VALUES<\/span>\r\n<span class=\"p\">(<\/span><span class=\"s1\">'elephant'<\/span><span class=\"p\">,<\/span> <span class=\"s1\">'?'<\/span><span class=\"p\">,<\/span> <span class=\"s1\">'paon'<\/span><span class=\"p\">),<\/span>\r\n<span class=\"p\">(<\/span><span class=\"s1\">'cat'<\/span><span class=\"p\">,<\/span> <span class=\"s1\">'?'<\/span><span class=\"p\">,<\/span> <span class=\"s1\">'nya-n'<\/span><span class=\"p\">),<\/span>\r\n<span class=\"p\">(<\/span><span class=\"s1\">'dolphin'<\/span><span class=\"p\">,<\/span> <span class=\"s1\">'?'<\/span><span class=\"p\">,<\/span> <span class=\"s1\">'kyu-'<\/span><span class=\"p\">)<\/span>\r\n<span class=\"p\">;<\/span>\r\n<span class=\"k\">INSERT<\/span> <span class=\"mi\">0<\/span> <span class=\"mi\">3<\/span>\r\n<span class=\"k\">SELECT<\/span> <span class=\"o\">*<\/span> <span class=\"k\">FROM<\/span> <span class=\"n\">hoge<\/span><span class=\"p\">;<\/span>\r\n    <span class=\"n\">n<\/span>     <span class=\"o\">|<\/span> <span class=\"n\">i<\/span>  <span class=\"o\">|<\/span>   <span class=\"n\">v<\/span>\r\n<span class=\"c1\">----------+----+-------<\/span>\r\n <span class=\"n\">elephant<\/span> <span class=\"o\">|<\/span> <span class=\"err\">?<\/span> <span class=\"o\">|<\/span> <span class=\"n\">paon<\/span>\r\n <span class=\"n\">cat<\/span>      <span class=\"o\">|<\/span> <span class=\"err\">?<\/span> <span class=\"o\">|<\/span> <span class=\"n\">nya<\/span><span class=\"o\">-<\/span><span class=\"n\">n<\/span>\r\n <span class=\"n\">dolphin<\/span>  <span class=\"o\">|<\/span> <span class=\"err\">?<\/span> <span class=\"o\">|<\/span> <span class=\"n\">kyu<\/span><span class=\"o\">-<\/span>\r\n<span class=\"p\">(<\/span><span class=\"mi\">3<\/span> <span class=\"k\">rows<\/span><span class=\"p\">)<\/span>\r\n<\/code><\/pre>\n<h3>\u63d0\u4f9b\u53c2\u8003\u7684\u4fe1\u606f<\/h3>\n<p>\u8fd9\u4e2a\u6539\u8fdb\u5df2\u7ecf\u5728 Commitfest 2021-09 \u4e2d\u63d0\u4ea4\u5e76\u5408\u5e76\u3002<br \/>\n\u5728 psql \u4e2d\u8ba1\u7b97\u8868\u60c5\u7b26\u53f7\u7684\u5bbd\u5ea6\u51fa\u4e86\u95ee\u9898\u3002<\/p>\n<h1>\u6700\u540e<\/h1>\n<p>\u7531\u4e8e\u53d1\u5e03\u8bf4\u660e\u4e2d\u672a\u63d0\u53ca\u7684\u9879\u76ee\u3001\u672a\u5728Commitfest\u4e2d\u5217\u51fa\u7684\u6539\u8fdb\u9879\u76ee\u4ee5\u53ca\u5df2\u5728PostgreSQL 14.3\u4e2d\u89e3\u51b3\u7684\u9879\u76ee\u5b58\u5728\uff0c\u8fd9\u6b21\u8c03\u67e5\u51fa\u4eba\u610f\u6599\u5730\u56f0\u96be\u3002<\/p>\n<p>\u6211\u4e00\u76f4\u90fd\u5728\u4f7f\u7528psql\u8fd9\u4e2a\u5de5\u5177\u6765\u64cd\u4f5cPostgreSQL\uff0c\u4ee4\u4eba\u60ca\u8bb6\u7684\u662f\u5b83\u4ecd\u5728\u4e0d\u65ad\u8fdb\u5316\uff0c\u6bcf\u6b21\u5347\u7ea7\u7248\u672c\u65f6\u6211\u90fd\u4f1a\u611f\u53f9\u4e0d\u5df2\u3002<br \/>\n\u5b83\u592a\u65b9\u4fbf\u4e86\uff0c\u4ee5\u81f3\u4e8e\u6211\u4e0d\u518d\u4f7f\u7528pgAdmin4\u7b49\u56fe\u5f62\u754c\u9762\u7684\u5ba2\u6237\u7aef\u63a5\u53e3\u4e86\u5462&#8230;\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u9996\u5148 \u55b5~\u3002 \u9019\u6b21\u6211\u5011\u4f86\u770b\u770b\u5927\u5bb6\u559c\u611b\u7684psql\u7684PostgreSQL 15\u6539\u9032\u9805\u76ee\u3002 \u5099\u8a3b\uff1a\u7531\u65bc\u76ee\u524d\u53ea\u662fbet 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