{"id":171713,"date":"2024-11-07T05:02:24","date_gmt":"2024-11-06T21:02:24","guid":{"rendered":"https:\/\/server.hk\/cnblog\/171713\/"},"modified":"2024-11-07T05:02:24","modified_gmt":"2024-11-06T21:02:24","slug":"%e8%bc%95%e9%ac%86%e6%90%9e%e5%ae%9a%ef%bc%81%e5%88%aa%e9%99%a4%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e7%9a%84%e8%a1%8c%e6%95%99%e7%a8%8b-%e5%88%aa%e9%99%a4%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e8%a1%8c","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/171713\/","title":{"rendered":"\u8f15\u9b06\u641e\u5b9a\uff01\u522a\u9664\u6578\u64da\u5eab\u4e2d\u7684\u884c\u6559\u7a0b (\u522a\u9664\u6578\u64da\u5eab\u7684\u884c)"},"content":{"rendered":"<h1 id=\"%e8%bc%95%e9%ac%86%e6%90%9e%e5%ae%9a%ef%bc%81%e5%88%aa%e9%99%a4%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e7%9a%84%e8%a1%8c%e6%95%99%e7%a8%8b-%e5%88%aa%e9%99%a4%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e8%a1%8c-MyjWijMvzp\">\u8f15\u9b06\u641e\u5b9a\uff01\u522a\u9664\u6578\u64da\u5eab\u4e2d\u7684\u884c\u6559\u7a0b (\u522a\u9664\u6578\u64da\u5eab\u7684\u884c)<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u522a\u9664\u4e0d\u5fc5\u8981\u7684\u6578\u64da\u884c\u662f\u4e00\u9805\u5e38\u898b\u7684\u4efb\u52d9\u3002\u7121\u8ad6\u662f\u56e0\u70ba\u6578\u64da\u904e\u6642\u3001\u932f\u8aa4\u6216\u662f\u9700\u8981\u91cb\u653e\u7a7a\u9593\uff0c\u4e86\u89e3\u5982\u4f55\u6709\u6548\u5730\u522a\u9664\u6578\u64da\u5eab\u4e2d\u7684\u884c\u662f\u6bcf\u4f4d\u958b\u767c\u8005\u548c\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u5fc5\u9808\u638c\u63e1\u7684\u6280\u80fd\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u5728\u4e0d\u540c\u7684\u6578\u64da\u5eab\u7cfb\u7d71\u4e2d\u522a\u9664\u884c\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u548c\u6ce8\u610f\u4e8b\u9805\u3002<\/p>\n<h2 id=\"1-%e4%bd%bf%e7%94%a8-sql-%e8%aa%9e%e5%8f%a5%e5%88%aa%e9%99%a4%e8%a1%8c-MyjWijMvzp\">1. \u4f7f\u7528 SQL \u8a9e\u53e5\u522a\u9664\u884c<\/h2>\n<p>\u5728\u5927\u591a\u6578\u95dc\u4fc2\u578b\u6578\u64da\u5eab\u4e2d\uff0c\u522a\u9664\u884c\u7684\u57fa\u672c\u8a9e\u6cd5\u662f\u4f7f\u7528 <code>DELETE<\/code> \u8a9e\u53e5\u3002\u4ee5\u4e0b\u662f\u57fa\u672c\u7684\u8a9e\u6cd5\u7d50\u69cb\uff1a<\/p>\n<pre><code>DELETE FROM \u8868\u540d WHERE \u689d\u4ef6;<\/code><\/pre>\n<p>\u9019\u88e1\u7684 <code>\u8868\u540d<\/code> \u662f\u4f60\u8981\u522a\u9664\u6578\u64da\u7684\u8868\uff0c\u800c <code>\u689d\u4ef6<\/code> \u5247\u662f\u7528\u4f86\u6307\u5b9a\u54ea\u4e9b\u884c\u9700\u8981\u88ab\u522a\u9664\u7684\u689d\u4ef6\u3002\u82e5\u4e0d\u52a0 <code>WHERE<\/code> \u689d\u4ef6\uff0c\u5247\u6574\u500b\u8868\u7684\u6578\u64da\u90fd\u6703\u88ab\u522a\u9664\uff0c\u9019\u662f\u975e\u5e38\u5371\u96aa\u7684\u64cd\u4f5c\u3002<\/p>\n<h3 id=\"1-1-%e7%a4%ba%e4%be%8b%ef%bc%9a%e5%88%aa%e9%99%a4%e7%89%b9%e5%ae%9a%e8%a1%8c-MyjWijMvzp\">1.1 \u793a\u4f8b\uff1a\u522a\u9664\u7279\u5b9a\u884c<\/h3>\n<p>\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba <code>users<\/code> \u7684\u8868\uff0c\u4e26\u4e14\u6211\u5011\u60f3\u8981\u522a\u9664\u7528\u6236 ID \u70ba 5 \u7684\u884c\uff0c\u5247\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b SQL \u8a9e\u53e5\uff1a<\/p>\n<pre><code>DELETE FROM users WHERE id = 5;<\/code><\/pre>\n<h3 id=\"1-2-%e7%a4%ba%e4%be%8b%ef%bc%9a%e5%88%aa%e9%99%a4%e5%a4%9a%e8%a1%8c-MyjWijMvzp\">1.2 \u793a\u4f8b\uff1a\u522a\u9664\u591a\u884c<\/h3>\n<p>\u5982\u679c\u9700\u8981\u522a\u9664\u591a\u500b\u7528\u6236\uff0c\u53ef\u4ee5\u4f7f\u7528 <code>IN<\/code> \u689d\u4ef6\u3002\u4f8b\u5982\uff0c\u522a\u9664\u7528\u6236 ID \u70ba 3 \u548c 4 \u7684\u884c\uff1a<\/p>\n<pre><code>DELETE FROM users WHERE id IN (3, 4);<\/code><\/pre>\n<h2 id=\"2-%e4%bd%bf%e7%94%a8%e4%ba%8b%e5%8b%99%e7%ae%a1%e7%90%86%e5%88%aa%e9%99%a4%e6%93%8d%e4%bd%9c-MyjWijMvzp\">2. \u4f7f\u7528\u4e8b\u52d9\u7ba1\u7406\u522a\u9664\u64cd\u4f5c<\/h2>\n<p>\u5728\u9032\u884c\u522a\u9664\u64cd\u4f5c\u6642\uff0c\u7279\u5225\u662f\u5728\u522a\u9664\u591a\u884c\u6216\u91cd\u8981\u6578\u64da\u6642\uff0c\u5efa\u8b70\u4f7f\u7528\u4e8b\u52d9\u4f86\u78ba\u4fdd\u6578\u64da\u7684\u5b8c\u6574\u6027\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528\u4e8b\u52d9\u7684\u57fa\u672c\u6b65\u9a5f\uff1a<\/p>\n<pre><code>START TRANSACTION;\nDELETE FROM users WHERE id = 5;\nCOMMIT;<\/code><\/pre>\n<p>\u9019\u6a23\uff0c\u5982\u679c\u5728\u522a\u9664\u904e\u7a0b\u4e2d\u51fa\u73fe\u932f\u8aa4\uff0c\u53ef\u4ee5\u4f7f\u7528 <code>ROLLBACK<\/code> \u4f86\u64a4\u92b7\u64cd\u4f5c\uff0c\u4fdd\u8b77\u6578\u64da\u4e0d\u88ab\u640d\u58de\u3002<\/p>\n<h2 id=\"3-%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-MyjWijMvzp\">3. \u6ce8\u610f\u4e8b\u9805<\/h2>\n<ul>\n<li><strong>\u5099\u4efd\u6578\u64da\uff1a<\/strong>\u5728\u9032\u884c\u522a\u9664\u64cd\u4f5c\u4e4b\u524d\uff0c\u52d9\u5fc5\u5099\u4efd\u6578\u64da\uff0c\u4ee5\u9632\u6b62\u610f\u5916\u522a\u9664\u91cd\u8981\u4fe1\u606f\u3002<\/li>\n<li><strong>\u6aa2\u67e5\u689d\u4ef6\uff1a<\/strong>\u78ba\u4fdd <code>WHERE<\/code> \u689d\u4ef6\u6b63\u78ba\uff0c\u907f\u514d\u522a\u9664\u4e0d\u61c9\u8a72\u522a\u9664\u7684\u884c\u3002<\/li>\n<li><strong>\u4f7f\u7528 LIMIT\uff1a<\/strong>\u5728\u67d0\u4e9b\u6578\u64da\u5eab\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528 <code>LIMIT<\/code> \u9650\u5236\u522a\u9664\u7684\u884c\u6578\uff0c\u9019\u6a23\u53ef\u4ee5\u66f4\u5b89\u5168\u5730\u9032\u884c\u64cd\u4f5c\u3002<\/li>\n<\/ul>\n<h2 id=\"4-%e4%b8%8d%e5%90%8c%e6%95%b8%e6%93%9a%e5%ba%ab%e7%b3%bb%e7%b5%b1%e7%9a%84%e5%88%aa%e9%99%a4%e8%aa%9e%e6%b3%95-MyjWijMvzp\">4. \u4e0d\u540c\u6578\u64da\u5eab\u7cfb\u7d71\u7684\u522a\u9664\u8a9e\u6cd5<\/h2>\n<p>\u4e0d\u540c\u7684\u6578\u64da\u5eab\u7cfb\u7d71\u53ef\u80fd\u6703\u6709\u4e9b\u8a31\u5dee\u7570\uff0c\u4ee5\u4e0b\u662f\u5e7e\u500b\u5e38\u898b\u6578\u64da\u5eab\u7684\u522a\u9664\u8a9e\u6cd5\uff1a<\/p>\n<ul>\n<li><strong>MySQL\uff1a<\/strong> \u4f7f\u7528\u4e0a\u8ff0\u7684 <code>DELETE<\/code> \u8a9e\u53e5\u3002<\/li>\n<li><strong>PostgreSQL\uff1a<\/strong> \u540c\u6a23\u4f7f\u7528 <code>DELETE<\/code> \u8a9e\u53e5\uff0c\u8a9e\u6cd5\u76f8\u540c\u3002<\/li>\n<li><strong>SQL Server\uff1a<\/strong> \u4e5f\u4f7f\u7528 <code>DELETE<\/code> \u8a9e\u53e5\uff0c\u8a9e\u6cd5\u4e00\u81f4\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-MyjWijMvzp\">\u7e3d\u7d50<\/h2>\n<p>\u522a\u9664\u6578\u64da\u5eab\u4e2d\u7684\u884c\u662f\u4e00\u9805\u57fa\u672c\u4f46\u91cd\u8981\u7684\u64cd\u4f5c\u3002\u901a\u904e\u6b63\u78ba\u4f7f\u7528 <code>DELETE<\/code> \u8a9e\u53e5\u3001\u4e8b\u52d9\u7ba1\u7406\u4ee5\u53ca\u6ce8\u610f\u76f8\u95dc\u4e8b\u9805\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u7ba1\u7406\u6578\u64da\u5eab\u4e2d\u7684\u6578\u64da\u3002\u7121\u8ad6\u4f60\u4f7f\u7528\u7684\u662f MySQL\u3001PostgreSQL \u9084\u662f SQL Server\uff0c\u638c\u63e1\u9019\u4e9b\u57fa\u672c\u6280\u80fd\u90fd\u5c07\u6709\u52a9\u65bc\u63d0\u5347\u4f60\u7684\u6578\u64da\u5eab\u7ba1\u7406\u80fd\u529b\u3002<\/p>\n<p>\u5982\u679c\u4f60\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u904b\u884c\u4f60\u7684\u6578\u64da\u5eab\uff0cServer.HK \u63d0\u4f9b\u7a69\u5b9a\u7684\u670d\u52d9\u548c\u9748\u6d3b\u7684\u914d\u7f6e\u9078\u64c7\uff0c\u5e6b\u52a9\u4f60\u8f15\u9b06\u7ba1\u7406\u6578\u64da\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u8f15\u9b06\u522a\u9664\u6578\u64da\u5eab\u4e2d\u7684\u884c\uff0c\u638c\u63e1\u7c21\u55ae\u6b65\u9a5f\u548c\u6280\u5de7\uff0c\u8b93\u6578\u64da\u7ba1\u7406\u8b8a\u5f97\u66f4\u9ad8\u6548\uff01<\/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-171713","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/171713","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=171713"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/171713\/revisions"}],"predecessor-version":[{"id":171714,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/171713\/revisions\/171714"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=171713"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=171713"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=171713"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}