{"id":175425,"date":"2024-11-08T05:46:16","date_gmt":"2024-11-07T21:46:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/175425\/"},"modified":"2024-11-08T05:46:17","modified_gmt":"2024-11-07T21:46:17","slug":"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8sql%e8%aa%9e%e5%8f%a5%e7%8d%b2%e5%8f%96%e7%95%b6%e5%89%8d%e6%9c%88%e4%bb%bd%ef%bc%88sql%e6%95%b8%e6%93%9a%e5%ba%ab%e7%8d%b2%e5%8f%96%e7%95%b6%e5%89%8d%e6%9c%88","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/175425\/","title":{"rendered":"\u5982\u4f55\u4f7f\u7528SQL\u8a9e\u53e5\u7372\u53d6\u7576\u524d\u6708\u4efd\uff08sql\u6578\u64da\u5eab\u7372\u53d6\u7576\u524d\u6708\u4efd\uff09"},"content":{"rendered":"

\u5982\u4f55\u4f7f\u7528SQL\u8a9e\u53e5\u7372\u53d6\u7576\u524d\u6708\u4efd\uff08SQL\u6578\u64da\u5eab\u7372\u53d6\u7576\u524d\u6708\u4efd\uff09<\/h1>\n

\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u7372\u53d6\u7576\u524d\u6708\u4efd\u662f\u4e00\u500b\u5e38\u898b\u7684\u9700\u6c42\uff0c\u5c24\u5176\u662f\u5728\u9032\u884c\u6578\u64da\u5206\u6790\u548c\u5831\u544a\u6642\u3002\u7121\u8ad6\u662f\u7528\u65bc\u751f\u6210\u5831\u8868\u3001\u904e\u6ffe\u6578\u64da\u9084\u662f\u9032\u884c\u6578\u64da\u7d71\u8a08\uff0c\u4e86\u89e3\u5982\u4f55\u4f7f\u7528SQL\u8a9e\u53e5\u4f86\u7372\u53d6\u7576\u524d\u6708\u4efd\u90fd\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5e7e\u7a2e\u4e0d\u540c\u7684SQL\u8a9e\u53e5\uff0c\u5e6b\u52a9\u60a8\u5728\u4e0d\u540c\u7684\u6578\u64da\u5eab\u7cfb\u7d71\u4e2d\u7372\u53d6\u7576\u524d\u6708\u4efd\u3002<\/p>\n

1. \u4f7f\u7528MySQL\u7372\u53d6\u7576\u524d\u6708\u4efd<\/h2>\n

\u5728MySQL\u4e2d\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u5167\u5efa\u7684\u51fd\u6578\u4f86\u7372\u53d6\u7576\u524d\u7684\u6708\u4efd\u3002\u4ee5\u4e0b\u662f\u7372\u53d6\u7576\u524d\u6708\u4efd\u7684SQL\u8a9e\u53e5\uff1a<\/p>\n

SELECT MONTH(CURRENT_DATE) AS current_month;<\/code><\/pre>\n
\u9019\u689d\u8a9e\u53e5\u5c07\u8fd4\u56de\u7576\u524d\u65e5\u671f\u7684\u6708\u4efd\uff0c\u4e26\u5c07\u5176\u547d\u540d\u70ba\u201ccurrent_month\u201d\u3002\u5982\u679c\u60a8\u5e0c\u671b\u7372\u53d6\u5b8c\u6574\u7684\u65e5\u671f\u683c\u5f0f\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8a9e\u53e5\uff1a<\/p>\n
SELECT DATE_FORMAT(CURRENT_DATE, '%Y-%m') AS current_month;<\/code><\/pre>\n
\u9019\u5c07\u8fd4\u56de\u985e\u4f3c\u201c2023-10\u201d\u7684\u683c\u5f0f\uff0c\u65b9\u4fbf\u9032\u884c\u9032\u4e00\u6b65\u7684\u6578\u64da\u8655\u7406\u3002<\/p>\n
2. \u4f7f\u7528SQL Server\u7372\u53d6\u7576\u524d\u6708\u4efd<\/h2>\n
\u5728SQL Server\u4e2d\uff0c\u7372\u53d6\u7576\u524d\u6708\u4efd\u7684\u65b9\u5f0f\u7565\u6709\u4e0d\u540c\u3002\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8a9e\u53e5\uff1a<\/p>\n
SELECT MONTH(GETDATE()) AS current_month;<\/code><\/pre>\n
\u9019\u689d\u8a9e\u53e5\u540c\u6a23\u6703\u8fd4\u56de\u7576\u524d\u7684\u6708\u4efd\u3002\u5982\u679c\u60a8\u9700\u8981\u7372\u53d6\u5b8c\u6574\u7684\u5e74\u6708\u683c\u5f0f\uff0c\u53ef\u4ee5\u4f7f\u7528\uff1a<\/p>\n
SELECT FORMAT(GETDATE(), 'yyyy-MM') AS current_month;<\/code><\/pre>\n
\u9019\u6a23\u53ef\u4ee5\u7372\u5f97\u201c2023-10\u201d\u7684\u683c\u5f0f\uff0c\u4fbf\u65bc\u9032\u884c\u5831\u8868\u751f\u6210\u3002<\/p>\n
3. \u4f7f\u7528PostgreSQL\u7372\u53d6\u7576\u524d\u6708\u4efd<\/h2>\n
\u5728PostgreSQL\u4e2d\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8a9e\u53e5\u4f86\u7372\u53d6\u7576\u524d\u6708\u4efd\uff1a<\/p>\n
SELECT EXTRACT(MONTH FROM CURRENT_DATE) AS current_month;<\/code><\/pre>\n
\u9019\u5c07\u8fd4\u56de\u7576\u524d\u7684\u6708\u4efd\u6578\u5b57\u3002\u5982\u679c\u60a8\u60f3\u8981\u7372\u53d6\u5b8c\u6574\u7684\u5e74\u6708\u683c\u5f0f\uff0c\u53ef\u4ee5\u4f7f\u7528\uff1a<\/p>\n
SELECT TO_CHAR(CURRENT_DATE, 'YYYY-MM') AS current_month;<\/code><\/pre>\n
\u9019\u6a23\u7684\u7d50\u679c\u540c\u6a23\u6703\u662f\u201c2023-10\u201d\u3002<\/p>\n
4. \u4f7f\u7528Oracle\u7372\u53d6\u7576\u524d\u6708\u4efd<\/h2>\n
\u5728Oracle\u6578\u64da\u5eab\u4e2d\uff0c\u7372\u53d6\u7576\u524d\u6708\u4efd\u7684\u8a9e\u53e5\u5982\u4e0b\uff1a<\/p>\n
SELECT EXTRACT(MONTH FROM SYSDATE) AS current_month FROM dual;<\/code><\/pre>\n
\u5982\u679c\u60a8\u9700\u8981\u5b8c\u6574\u7684\u5e74\u6708\u683c\u5f0f\uff0c\u53ef\u4ee5\u4f7f\u7528\uff1a<\/p>\n
SELECT TO_CHAR(SYSDATE, 'YYYY-MM') AS current_month FROM dual;<\/code><\/pre>\n
\u9019\u5c07\u8fd4\u56de\u201c2023-10\u201d\u7684\u683c\u5f0f\u3002<\/p>\n
5. \u7e3d\u7d50<\/h2>\n
\u7121\u8ad6\u60a8\u4f7f\u7528\u7684\u662f\u54ea\u7a2e\u6578\u64da\u5eab\u7cfb\u7d71\uff0c\u7372\u53d6\u7576\u524d\u6708\u4efd\u7684SQL\u8a9e\u53e5\u90fd\u76f8\u5c0d\u7c21\u55ae\u3002\u901a\u904e\u4f7f\u7528\u5167\u5efa\u7684\u65e5\u671f\u51fd\u6578\uff0c\u60a8\u53ef\u4ee5\u8f15\u9b06\u5730\u7372\u53d6\u6240\u9700\u7684\u6578\u64da\uff0c\u4e26\u9032\u884c\u9032\u4e00\u6b65\u7684\u5206\u6790\u548c\u5831\u544a\u3002\u638c\u63e1\u9019\u4e9b\u57fa\u672c\u7684SQL\u8a9e\u53e5\u5c07\u6709\u52a9\u65bc\u63d0\u9ad8\u60a8\u7684\u6578\u64da\u8655\u7406\u6548\u7387\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>\u4f86\u6258\u7ba1\u60a8\u7684\u6578\u64da\u5eab\u3002\u7121\u8ad6\u662f\u9700\u8981\u9ad8\u6027\u80fd\u7684\u4e91\u4f3a\u670d\u5668<\/a>\u9084\u662f\u7a69\u5b9a\u7684\u9999\u6e2f\u4f3a\u670d\u5668<\/a>\uff0cServer.HK\u90fd\u80fd\u63d0\u4f9b\u6eff\u8db3\u60a8\u9700\u6c42\u7684\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5b78\u7fd2\u5982\u4f55\u4f7f\u7528SQL\u8a9e\u53e5\u7372\u53d6\u7576\u524d\u6708\u4efd\uff0c\u8f15\u9b06\u67e5\u8a62\u6578\u64da\u5eab\u4e2d\u7684\u7576\u524d\u65e5\u671f\u548c\u6642\u9593\u4fe1\u606f\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-175425","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/175425","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=175425"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/175425\/revisions"}],"predecessor-version":[{"id":175426,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/175425\/revisions\/175426"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=175425"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=175425"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=175425"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}