{"id":171945,"date":"2024-11-07T08:59:15","date_gmt":"2024-11-07T00:59:15","guid":{"rendered":"https:\/\/server.hk\/cnblog\/171945\/"},"modified":"2024-11-07T08:59:16","modified_gmt":"2024-11-07T00:59:16","slug":"%e8%bc%95%e9%ac%86%e6%8e%8c%e6%8f%a1sql%ef%bc%9a30%e7%a7%92%e5%ad%b8%e6%9c%83%e6%9f%a5%e7%9c%8b%e6%95%b8%e6%93%9a%e5%ba%ab%e4%bd%bf%e7%94%a8%e6%83%85%e6%b3%81-sql-%e6%9f%a5%e7%9c%8b%e6%95%b8%e6%93%9a","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/171945\/","title":{"rendered":"\u8f15\u9b06\u638c\u63e1SQL\uff1a30\u79d2\u5b78\u6703\u67e5\u770b\u6578\u64da\u5eab\u4f7f\u7528\u60c5\u6cc1 (sql \u67e5\u770b\u6578\u64da\u5eab\u4f7f\u7528\u60c5\u6cc1)"},"content":{"rendered":"

\u8f15\u9b06\u638c\u63e1SQL\uff1a30\u79d2\u5b78\u6703\u67e5\u770b\u6578\u64da\u5eab\u4f7f\u7528\u60c5\u6cc1<\/h1>\n

\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u7ba1\u7406\u548c\u76e3\u63a7\u8b8a\u5f97\u8d8a\u4f86\u8d8a\u91cd\u8981\u3002\u7121\u8ad6\u662f\u4f01\u696d\u9084\u662f\u500b\u4eba\u958b\u767c\u8005\uff0c\u4e86\u89e3\u5982\u4f55\u67e5\u770b\u6578\u64da\u5eab\u7684\u4f7f\u7528\u60c5\u6cc1\u90fd\u662f\u4e00\u9805\u57fa\u672c\u6280\u80fd\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u4f7f\u7528SQL\u67e5\u8a62\u4f86\u8f15\u9b06\u67e5\u770b\u6578\u64da\u5eab\u7684\u4f7f\u7528\u60c5\u6cc1\uff0c\u5e6b\u52a9\u60a8\u5feb\u901f\u638c\u63e1\u9019\u9805\u6280\u80fd\u3002<\/p>\n

\u4ec0\u9ebc\u662fSQL\uff1f<\/h2>\n

SQL\uff08\u7d50\u69cb\u5316\u67e5\u8a62\u8a9e\u8a00\uff09\u662f\u4e00\u7a2e\u7528\u65bc\u7ba1\u7406\u548c\u64cd\u4f5c\u95dc\u4fc2\u578b\u6578\u64da\u5eab\u7684\u6a19\u6e96\u8a9e\u8a00\u3002\u5b83\u5141\u8a31\u7528\u6236\u57f7\u884c\u5404\u7a2e\u64cd\u4f5c\uff0c\u5305\u62ec\u67e5\u8a62\u6578\u64da\u3001\u66f4\u65b0\u6578\u64da\u3001\u63d2\u5165\u6578\u64da\u548c\u522a\u9664\u6578\u64da\u3002\u5c0d\u65bc\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u548c\u958b\u767c\u8005\u4f86\u8aaa\uff0c\u719f\u6089SQL\u662f\u5fc5\u4e0d\u53ef\u5c11\u7684\u3002<\/p>\n

\u70ba\u4ec0\u9ebc\u9700\u8981\u67e5\u770b\u6578\u64da\u5eab\u4f7f\u7528\u60c5\u6cc1\uff1f<\/h2>\n

\u67e5\u770b\u6578\u64da\u5eab\u7684\u4f7f\u7528\u60c5\u6cc1\u53ef\u4ee5\u5e6b\u52a9\u60a8\u4e86\u89e3\u6578\u64da\u5eab\u7684\u6027\u80fd\u3001\u8cc7\u6e90\u4f7f\u7528\u60c5\u6cc1\u4ee5\u53ca\u6f5b\u5728\u7684\u554f\u984c\u3002\u901a\u904e\u76e3\u63a7\u6578\u64da\u5eab\u7684\u4f7f\u7528\u60c5\u6cc1\uff0c\u60a8\u53ef\u4ee5\u53ca\u6642\u767c\u73fe\u6027\u80fd\u74f6\u9838\uff0c\u9032\u884c\u512a\u5316\uff0c\u4e26\u78ba\u4fdd\u6578\u64da\u5eab\u7684\u7a69\u5b9a\u904b\u884c\u3002<\/p>\n

\u5982\u4f55\u67e5\u770b\u6578\u64da\u5eab\u4f7f\u7528\u60c5\u6cc1<\/h2>\n

\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u7528\u7684SQL\u67e5\u8a62\uff0c\u53ef\u4ee5\u5e6b\u52a9\u60a8\u5feb\u901f\u67e5\u770b\u6578\u64da\u5eab\u7684\u4f7f\u7528\u60c5\u6cc1\uff1a<\/p>\n

1. \u67e5\u770b\u6578\u64da\u5eab\u5927\u5c0f<\/h3>\n
SELECT \n    table_schema AS 'Database', \n    SUM(data_length + index_length) \/ 1024 \/ 1024 AS 'Size (MB)' \nFROM \n    information_schema.TABLES \nGROUP BY \n    table_schema;<\/code><\/pre>\n
\u9019\u500b\u67e5\u8a62\u5c07\u8fd4\u56de\u6240\u6709\u6578\u64da\u5eab\u7684\u5927\u5c0f\uff0c\u4ee5MB\u70ba\u55ae\u4f4d\u3002\u901a\u904e\u9019\u500b\u67e5\u8a62\uff0c\u60a8\u53ef\u4ee5\u5feb\u901f\u4e86\u89e3\u6bcf\u500b\u6578\u64da\u5eab\u7684\u5b58\u5132\u9700\u6c42\u3002<\/p>\n
2. \u67e5\u770b\u6d3b\u52d5\u9023\u63a5\u6578<\/h3>\n
SHOW STATUS WHERE `variable_name` = 'Threads_connected';<\/code><\/pre>\n
\u9019\u500b\u67e5\u8a62\u5c07\u986f\u793a\u7576\u524d\u9023\u63a5\u5230\u6578\u64da\u5eab\u7684\u7dda\u7a0b\u6578\u3002\u4e86\u89e3\u6d3b\u52d5\u9023\u63a5\u6578\u53ef\u4ee5\u5e6b\u52a9\u60a8\u8a55\u4f30\u6578\u64da\u5eab\u7684\u8ca0\u8f09\u60c5\u6cc1\u3002<\/p>\n
3. \u67e5\u770b\u67e5\u8a62\u6027\u80fd<\/h3>\n
SHOW PROCESSLIST;<\/code><\/pre>\n
\u9019\u500b\u67e5\u8a62\u5c07\u986f\u793a\u7576\u524d\u6b63\u5728\u57f7\u884c\u7684\u67e5\u8a62\u53ca\u5176\u72c0\u614b\u3002\u901a\u904e\u5206\u6790\u9019\u4e9b\u67e5\u8a62\uff0c\u60a8\u53ef\u4ee5\u8b58\u5225\u51fa\u6027\u80fd\u8f03\u5dee\u7684\u67e5\u8a62\u4e26\u9032\u884c\u512a\u5316\u3002<\/p>\n
4. \u67e5\u770b\u8868\u7684\u884c\u6578<\/h3>\n
SELECT \n    table_name, \n    table_rows \nFROM \n    information_schema.TABLES \nWHERE \n    table_schema = 'your_database_name';<\/code><\/pre>\n
\u5c07 ‘your_database_name’ \u66ff\u63db\u70ba\u60a8\u8981\u67e5\u8a62\u7684\u6578\u64da\u5eab\u540d\u7a31\uff0c\u9019\u500b\u67e5\u8a62\u5c07\u8fd4\u56de\u8a72\u6578\u64da\u5eab\u4e2d\u6bcf\u500b\u8868\u7684\u884c\u6578\uff0c\u5e6b\u52a9\u60a8\u4e86\u89e3\u6578\u64da\u7684\u5206\u4f48\u60c5\u6cc1\u3002<\/p>\n
\u7d50\u8ad6<\/h2>\n
\u638c\u63e1\u5982\u4f55\u67e5\u770b\u6578\u64da\u5eab\u7684\u4f7f\u7528\u60c5\u6cc1\u662f\u6bcf\u4f4d\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u548c\u958b\u767c\u8005\u5fc5\u5099\u7684\u6280\u80fd\u3002\u901a\u904e\u7c21\u55ae\u7684SQL\u67e5\u8a62\uff0c\u60a8\u53ef\u4ee5\u5feb\u901f\u7372\u53d6\u6709\u95dc\u6578\u64da\u5eab\u6027\u80fd\u548c\u8cc7\u6e90\u4f7f\u7528\u7684\u95dc\u9375\u4fe1\u606f\u3002\u9019\u4e0d\u50c5\u6709\u52a9\u65bc\u65e5\u5e38\u7ba1\u7406\uff0c\u9084\u80fd\u5728\u9047\u5230\u554f\u984c\u6642\u53ca\u6642\u505a\u51fa\u53cd\u61c9\u3002<\/p>\n
\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528\u9999\u6e2fVPS<\/a>\u670d\u52d9\uff0c\u9019\u5c07\u70ba\u60a8\u7684\u6578\u64da\u5eab\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u548c\u512a\u5316\u7684\u6027\u80fd\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u8f15\u9b06\u638c\u63e1SQL\uff0c30\u79d2\u5b78\u6703\u5982\u4f55\u67e5\u770b\u6578\u64da\u5eab\u4f7f\u7528\u60c5\u6cc1\uff0c\u63d0\u5347\u6578\u64da\u7ba1\u7406\u6548\u7387\uff0c\u8b93\u6578\u64da\u5206\u6790\u8b8a\u5f97\u7c21\u55ae\u6613\u61c2\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-171945","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/171945","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=171945"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/171945\/revisions"}],"predecessor-version":[{"id":171946,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/171945\/revisions\/171946"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=171945"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=171945"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=171945"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}