{"id":173183,"date":"2024-11-07T15:52:27","date_gmt":"2024-11-07T07:52:27","guid":{"rendered":"https:\/\/server.hk\/cnblog\/173183\/"},"modified":"2024-11-07T15:52:28","modified_gmt":"2024-11-07T07:52:28","slug":"%e5%a6%82%e4%bd%95%e8%99%95%e7%90%86sql-2023%e6%95%b8%e6%93%9a%e5%ba%ab%e9%81%8e%e5%a4%a7%e5%95%8f%e9%a1%8c%ef%bc%9f-sql-2023%e6%95%b8%e6%93%9a%e5%ba%ab%e9%81%8e%e5%a4%a7","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/173183\/","title":{"rendered":"\u5982\u4f55\u8655\u7406SQL 2023\u6578\u64da\u5eab\u904e\u5927\u554f\u984c\uff1f (sql 2023\u6578\u64da\u5eab\u904e\u5927)"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e8%99%95%e7%90%86sql-2023%e6%95%b8%e6%93%9a%e5%ba%ab%e9%81%8e%e5%a4%a7%e5%95%8f%e9%a1%8c%ef%bc%9f-EySqvZJFBM\">\u5982\u4f55\u8655\u7406SQL 2023\u6578\u64da\u5eab\u904e\u5927\u554f\u984c\uff1f<\/h1>\n<p>\u96a8\u8457\u6578\u64da\u91cf\u7684\u6301\u7e8c\u589e\u9577\uff0c\u8a31\u591a\u4f01\u696d\u548c\u958b\u767c\u8005\u9762\u81e8\u8457SQL\u6578\u64da\u5eab\u904e\u5927\u7684\u554f\u984c\u3002\u7279\u5225\u662f\u57282023\u5e74\uff0c\u6578\u64da\u5eab\u7684\u7ba1\u7406\u548c\u512a\u5316\u8b8a\u5f97\u5c24\u70ba\u91cd\u8981\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u6709\u6548\u5730\u8655\u7406SQL\u6578\u64da\u5eab\u904e\u5927\u7684\u554f\u984c\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n<h2 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e9%81%8e%e5%a4%a7%e7%9a%84%e5%8e%9f%e5%9b%a0-EySqvZJFBM\">\u6578\u64da\u5eab\u904e\u5927\u7684\u539f\u56e0<\/h2>\n<p>\u5728\u6df1\u5165\u89e3\u6c7a\u65b9\u6848\u4e4b\u524d\uff0c\u6211\u5011\u9700\u8981\u4e86\u89e3\u6578\u64da\u5eab\u904e\u5927\u7684\u539f\u56e0\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u539f\u56e0\uff1a<\/p>\n<ul>\n<li><strong>\u6578\u64da\u589e\u9577\uff1a<\/strong>\u96a8\u8457\u696d\u52d9\u7684\u767c\u5c55\uff0c\u6578\u64da\u91cf\u81ea\u7136\u6703\u589e\u52a0\uff0c\u7279\u5225\u662f\u7528\u6236\u6578\u64da\u3001\u4ea4\u6613\u8a18\u9304\u7b49\u3002<\/li>\n<li><strong>\u4e0d\u7576\u7684\u6578\u64da\u7ba1\u7406\uff1a<\/strong>\u7f3a\u4e4f\u6709\u6548\u7684\u6578\u64da\u6e05\u7406\u548c\u7ba1\u7406\u7b56\u7565\uff0c\u5c0e\u81f4\u5197\u9918\u6578\u64da\u7684\u7a4d\u7d2f\u3002<\/li>\n<li><strong>\u7d22\u5f15\u904e\u591a\uff1a<\/strong>\u96d6\u7136\u7d22\u5f15\u53ef\u4ee5\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\uff0c\u4f46\u904e\u591a\u7684\u7d22\u5f15\u6703\u4f54\u7528\u5927\u91cf\u7a7a\u9593\u3002<\/li>\n<li><strong>\u672a\u512a\u5316\u7684\u67e5\u8a62\uff1a<\/strong>\u4e0d\u7576\u7684\u67e5\u8a62\u8a2d\u8a08\u53ef\u80fd\u5c0e\u81f4\u6578\u64da\u5eab\u6027\u80fd\u4e0b\u964d\uff0c\u9032\u800c\u5f71\u97ff\u6578\u64da\u5b58\u5132\u3002<\/li>\n<\/ul>\n<h2 id=\"%e8%a7%a3%e6%b1%basql%e6%95%b8%e6%93%9a%e5%ba%ab%e9%81%8e%e5%a4%a7%e7%9a%84%e6%96%b9%e6%b3%95-EySqvZJFBM\">\u89e3\u6c7aSQL\u6578\u64da\u5eab\u904e\u5927\u7684\u65b9\u6cd5<\/h2>\n<h3 id=\"1-%e6%95%b8%e6%93%9a%e6%b8%85%e7%90%86-EySqvZJFBM\">1. \u6578\u64da\u6e05\u7406<\/h3>\n<p>\u5b9a\u671f\u9032\u884c\u6578\u64da\u6e05\u7406\u662f\u4fdd\u6301\u6578\u64da\u5eab\u5065\u5eb7\u7684\u91cd\u8981\u6b65\u9a5f\u3002\u9019\u5305\u62ec\u522a\u9664\u4e0d\u518d\u9700\u8981\u7684\u6578\u64da\uff0c\u5982\u904e\u671f\u7684\u7528\u6236\u4fe1\u606f\u3001\u6b77\u53f2\u4ea4\u6613\u8a18\u9304\u7b49\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0bSQL\u8a9e\u53e5\u4f86\u522a\u9664\u904e\u671f\u6578\u64da\uff1a<\/p>\n<pre><code>DELETE FROM users WHERE last_login &lt; DATE_SUB(NOW(), INTERVAL 1 YEAR);<\/code><\/pre>\n<h3 id=\"2-%e6%95%b8%e6%93%9a%e6%ad%b8%e6%aa%94-EySqvZJFBM\">2. \u6578\u64da\u6b78\u6a94<\/h3>\n<p>\u5c0d\u65bc\u4e0d\u5e38\u7528\u7684\u6578\u64da\uff0c\u53ef\u4ee5\u8003\u616e\u5c07\u5176\u6b78\u6a94\u5230\u53e6\u4e00\u500b\u6578\u64da\u5eab\u6216\u5b58\u5132\u7cfb\u7d71\u4e2d\u3002\u9019\u6a23\u53ef\u4ee5\u6e1b\u5c11\u4e3b\u6578\u64da\u5eab\u7684\u8ca0\u64d4\uff0c\u4e26\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u5c07\u6b77\u53f2\u4ea4\u6613\u6578\u64da\u79fb\u52d5\u5230\u4e00\u500b\u5c08\u9580\u7684\u6b78\u6a94\u6578\u64da\u5eab\u4e2d\u3002<\/p>\n<h3 id=\"3-%e5%84%aa%e5%8c%96%e7%b4%a2%e5%bc%95-EySqvZJFBM\">3. \u512a\u5316\u7d22\u5f15<\/h3>\n<p>\u6aa2\u67e5\u4e26\u512a\u5316\u7d22\u5f15\u662f\u63d0\u9ad8\u6578\u64da\u5eab\u6027\u80fd\u7684\u53e6\u4e00\u500b\u95dc\u9375\u6b65\u9a5f\u3002\u904e\u591a\u7684\u7d22\u5f15\u6703\u4f54\u7528\u5927\u91cf\u7a7a\u9593\uff0c\u56e0\u6b64\u61c9\u8a72\u5b9a\u671f\u8a55\u4f30\u7d22\u5f15\u7684\u4f7f\u7528\u60c5\u6cc1\uff0c\u522a\u9664\u4e0d\u5fc5\u8981\u7684\u7d22\u5f15\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0bSQL\u8a9e\u53e5\u4f86\u67e5\u770b\u7d22\u5f15\u4f7f\u7528\u60c5\u6cc1\uff1a<\/p>\n<pre><code>SHOW INDEX FROM table_name;<\/code><\/pre>\n<h3 id=\"4-%e5%88%86%e5%8d%80%e8%a1%a8-EySqvZJFBM\">4. \u5206\u5340\u8868<\/h3>\n<p>\u5c0d\u65bc\u5927\u578b\u6578\u64da\u8868\uff0c\u53ef\u4ee5\u8003\u616e\u4f7f\u7528\u5206\u5340\u6280\u8853\u3002\u5206\u5340\u53ef\u4ee5\u5c07\u6578\u64da\u5206\u6563\u5230\u4e0d\u540c\u7684\u7269\u7406\u5340\u57df\uff0c\u5f9e\u800c\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u548c\u7ba1\u7406\u6548\u7387\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u6839\u64da\u65e5\u671f\u5c07\u6578\u64da\u5206\u5340\uff1a<\/p>\n<pre><code>CREATE TABLE sales (\n    id INT,\n    sale_date DATE,\n    amount DECIMAL(10, 2)\n) PARTITION BY RANGE (YEAR(sale_date)) (\n    PARTITION p2021 VALUES LESS THAN (2022),\n    PARTITION p2022 VALUES LESS THAN (2023),\n    PARTITION p2023 VALUES LESS THAN (2024)\n);<\/code><\/pre>\n<h3 id=\"5-%e5%ae%9a%e6%9c%9f%e5%82%99%e4%bb%bd%e8%88%87%e7%b6%ad%e8%ad%b7-EySqvZJFBM\">5. 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id=\"%e7%b5%90%e8%ab%96-EySqvZJFBM\">\u7d50\u8ad6<\/h2>\n<p>\u8655\u7406SQL\u6578\u64da\u5eab\u904e\u5927\u7684\u554f\u984c\u9700\u8981\u7d9c\u5408\u8003\u616e\u591a\u7a2e\u56e0\u7d20\uff0c\u5305\u62ec\u6578\u64da\u6e05\u7406\u3001\u6b78\u6a94\u3001\u7d22\u5f15\u512a\u5316\u548c\u5206\u5340\u7b49\u3002\u901a\u904e\u9019\u4e9b\u65b9\u6cd5\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u7ba1\u7406\u6578\u64da\u5eab\uff0c\u63d0\u5347\u6027\u80fd\uff0c\u4e26\u78ba\u4fdd\u6578\u64da\u7684\u5b89\u5168\u6027\u548c\u53ef\u7528\u6027\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u7ba1\u7406\u7684\u4f01\u696d\uff0c\u9078\u64c7\u5408\u9069\u7684\u670d\u52d9\u5668\u548c\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\u81f3\u95dc\u91cd\u8981\u3002\u4e86\u89e3\u66f4\u591a\u95dc\u65bc<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u548c<a href=\"https:\/\/server.hk\">\u96f2\u670d\u52d9\u5668<\/a>\u7684\u8cc7\u8a0a\uff0c\u5c07\u6709\u52a9\u65bc\u60a8\u66f4\u597d\u5730\u61c9\u5c0d\u6578\u64da\u5eab\u7ba1\u7406\u6311\u6230\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u6709\u6548\u8655\u7406SQL 2023\u6578\u64da\u5eab\u904e\u5927\u554f\u984c\uff0c\u5305\u62ec\u6578\u64da\u6e05\u7406\u3001\u5206\u5340\u3001\u7d22\u5f15\u512a\u5316\u53ca\u6027\u80fd\u8abf\u6574\u6280\u5de7\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-173183","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/173183","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=173183"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/173183\/revisions"}],"predecessor-version":[{"id":173184,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/173183\/revisions\/173184"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=173183"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=173183"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=173183"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}