{"id":50201,"date":"2023-02-27T09:35:45","date_gmt":"2023-01-04T06:46:28","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%9c%a8cassandra%e7%9a%84cql%e4%b8%ad%ef%bc%8c%e5%8f%af%e4%bb%a5%e7%b1%bb%e6%af%94%e4%b8%bamysql%e9%87%8c%e7%9a%84%e6%9d%a5%e5%9b%9e%e6%9f%a5%e8%af%a2%e5%92%8c%e6%93%8d%e4%bd%9c%e6%95%b0%e6%8d%ae\/"},"modified":"2024-01-15T13:09:31","modified_gmt":"2024-01-15T05:09:31","slug":"%e5%9c%a8cassandra%e7%9a%84cql%e4%b8%ad%ef%bc%8c%e5%8f%af%e4%bb%a5%e7%b1%bb%e6%af%94%e4%b8%bamysql%e9%87%8c%e7%9a%84%e6%9d%a5%e5%9b%9e%e6%9f%a5%e8%af%a2%e5%92%8c%e6%93%8d%e4%bd%9c%e6%95%b0%e6%8d%ae","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%9c%a8cassandra%e7%9a%84cql%e4%b8%ad%ef%bc%8c%e5%8f%af%e4%bb%a5%e7%b1%bb%e6%af%94%e4%b8%bamysql%e9%87%8c%e7%9a%84%e6%9d%a5%e5%9b%9e%e6%9f%a5%e8%af%a2%e5%92%8c%e6%93%8d%e4%bd%9c%e6%95%b0%e6%8d%ae\/","title":{"rendered":"\u5728Cassandra\u7684CQL\u4e2d\uff0c\u53ef\u4ee5\u7c7b\u6bd4\u4e3aMySQL\u91cc\u7684\u6765\u56de\u67e5\u8be2\u548c\u64cd\u4f5c\u6570\u636e\u7684\u529f\u80fd"},"content":{"rendered":"<p>\u6211\u81ea\u5df1\u505a\u4e2a\u5907\u5fd8\u5f55\u3002<br \/>\nCassandra\u7684\u6587\u6863\u592a\u5c11\u4e86\u3002\u3002\u3002<\/p>\n<h2>\u79f0\u547c<\/h2>\n<div>\n<div class=\"post-table\">mysqlcqlshdatabasekeyspacetablecolumfamilykeycolum<\/div>\n<\/div>\n<h2>\u547d\u4ee4<\/h2>\n<h3>\u6570\u636e\u5e93\u5217\u8868<\/h3>\n<p>mysql =&gt; MySQL<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">SHOW<\/span> <span class=\"n\">databases<\/span><span class=\"p\">;<\/span>\r\n<\/code><\/pre>\n<p>cqlsh \u53ef\u4ee5\u7528\u4e2d\u6587\u539f\u751f\u5730\u91cd\u8ff0\u4e3a\uff1aCassandra \u67e5\u8be2\u8bed\u8a00\u5916\u58f3\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">SELECT<\/span> <span class=\"n\">keyspace_name<\/span> <span class=\"k\">FROM<\/span> <span class=\"k\">system<\/span><span class=\"p\">.<\/span><span class=\"n\">schema_keyspaces<\/span> <span class=\"p\">;<\/span>\r\n<\/code><\/pre>\n<h3>\u684c\u5b50\u6e05\u5355<\/h3>\n<p>MySQL &#8211; \u7269\u7406\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">USE<\/span> <span class=\"n\">database1<\/span><span class=\"p\">;<\/span>\r\n<span class=\"k\">SHOW<\/span> <span class=\"n\">tables<\/span><span class=\"p\">;<\/span>\r\n<\/code><\/pre>\n<p>\u4f7f\u7528CQLSH<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">SELECT<\/span> <span class=\"n\">columnfamily_name<\/span> <span class=\"k\">FROM<\/span> <span class=\"k\">system<\/span><span class=\"p\">.<\/span><span class=\"n\">schema_columnfamilies<\/span> <span class=\"k\">WHERE<\/span> <span class=\"n\">keyspace_name<\/span> <span class=\"o\">=<\/span> <span class=\"s1\">'database1'<\/span><span class=\"p\">;<\/span>\r\n<\/code><\/pre>\n<p>\u6216\u8005<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">DESCRIBE<\/span> <span class=\"n\">COLUMNFAMILIES<\/span><span class=\"p\">;<\/span>\r\n<\/code><\/pre>\n<h3>\u663e\u793a\u8868\u683c\u5b9a\u4e49<\/h3>\n<p>MySql: MySQL<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">DESCRIBE<\/span> <span class=\"n\">table1<\/span><span class=\"p\">;<\/span>\r\n<\/code><\/pre>\n<p>\u8fd0\u884ccqlsh\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">DESCRIBE<\/span> <span class=\"k\">TABLE<\/span> <span class=\"n\">table1<\/span><span class=\"p\">;<\/span>\r\n<span class=\"k\">or<\/span> \r\n<span class=\"k\">DESCRIBE<\/span> <span class=\"n\">COLUMNFAMILY<\/span> <span class=\"n\">table1<\/span><span class=\"p\">;<\/span>\r\n<\/code><\/pre>\n<h3>\u6570\u636e\u5bfc\u51fa<\/h3>\n<p>MySQL (My Structured Query Language) \u662f\u4e00\u79cd\u5e38\u7528\u7684\u5173\u7cfb\u578b\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nv\">$ <\/span>mysqldump <span class=\"nt\">-u<\/span> user1 <span class=\"nt\">-h<\/span> localhost <span class=\"nt\">-p<\/span> database1 table1 <span class=\"o\">&gt;<\/span> export_data.txt\r\n<\/code><\/pre>\n<p>cqlsh \u53ef\u4ee5\u7528\u4e2d\u6587\u81ea\u7136\u7ffb\u8bd1\u5982\u4e0b\uff1a<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">cqlsh<\/span> <span class=\"o\">&gt;<\/span> <span class=\"k\">COPY<\/span> <span class=\"n\">keyspace<\/span><span class=\"p\">.<\/span><span class=\"k\">table<\/span> <span class=\"p\">(<\/span><span class=\"n\">column1<\/span><span class=\"p\">,<\/span> <span class=\"n\">column2<\/span><span class=\"p\">,<\/span> <span class=\"p\">..)<\/span> <span class=\"k\">TO<\/span> <span class=\"s1\">'export_data.txt'<\/span> \r\n<span class=\"k\">WITH<\/span> <span class=\"k\">DELIMITER<\/span> <span class=\"o\">=<\/span> <span class=\"s1\">','<\/span> <span class=\"k\">AND<\/span> <span class=\"n\">QUOTE<\/span> <span class=\"o\">=<\/span> <span class=\"s1\">'<\/span><span class=\"se\">''<\/span><span class=\"s1\">'<\/span> <span class=\"k\">AND<\/span> <span class=\"k\">ESCAPE<\/span> <span class=\"o\">=<\/span> <span class=\"s1\">'<\/span><span class=\"se\">''<\/span><span class=\"s1\">'<\/span> <span class=\"k\">AND<\/span> <span class=\"k\">NULL<\/span> <span class=\"o\">=<\/span> <span class=\"s1\">'&lt;null&gt;'<\/span><span class=\"p\">;<\/span>\r\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u6211\u81ea\u5df1\u505a\u4e2a\u5907\u5fd8\u5f55\u3002 Cassandra\u7684\u6587\u6863\u592a\u5c11\u4e86\u3002\u3002\u3002 \u79f0\u547c mysqlcqlshdatabasekeysp [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-50201","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>\u5728Cassandra\u7684CQL\u4e2d\uff0c\u53ef\u4ee5\u7c7b\u6bd4\u4e3aMySQL\u91cc\u7684\u6765\u56de\u67e5\u8be2\u548c\u64cd\u4f5c\u6570\u636e\u7684\u529f\u80fd - Blog 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