{"id":175535,"date":"2024-11-08T06:41:17","date_gmt":"2024-11-07T22:41:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/175535\/"},"modified":"2024-11-08T06:41:18","modified_gmt":"2024-11-07T22:41:18","slug":"%e5%a6%82%e4%bd%95%e6%95%b8%e6%93%9a%e5%ba%ab%e5%88%aa%e9%99%a4%e4%b8%80%e5%80%8b%e8%a1%a8%e6%95%b8%e6%93%9a%ef%bc%9f-%e6%95%b8%e6%93%9a%e5%ba%ab%e5%88%aa%e9%99%a4%e4%b8%80%e5%80%8b%e8%a1%a8%e6%95%b8","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/175535\/","title":{"rendered":"\u5982\u4f55\u6578\u64da\u5eab\u522a\u9664\u4e00\u500b\u8868\u6578\u64da\uff1f (\u6578\u64da\u5eab\u522a\u9664\u4e00\u500b\u8868\u6578\u64da)"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e6%95%b8%e6%93%9a%e5%ba%ab%e5%88%aa%e9%99%a4%e4%b8%80%e5%80%8b%e8%a1%a8%e6%95%b8%e6%93%9a%ef%bc%9f-iyJpxjwSrX\">\u5982\u4f55\u6578\u64da\u5eab\u522a\u9664\u4e00\u500b\u8868\u6578\u64da\uff1f<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u522a\u9664\u8868\u4e2d\u7684\u6578\u64da\u662f\u4e00\u500b\u5e38\u898b\u7684\u64cd\u4f5c\u3002\u7121\u8ad6\u662f\u56e0\u70ba\u6578\u64da\u904e\u6642\u3001\u932f\u8aa4\u7684\u6578\u64da\u8f38\u5165\uff0c\u9084\u662f\u56e0\u70ba\u9700\u8981\u91cb\u653e\u5b58\u5132\u7a7a\u9593\uff0c\u4e86\u89e3\u5982\u4f55\u6b63\u78ba\u5730\u522a\u9664\u6578\u64da\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u5728\u4e0d\u540c\u7684\u6578\u64da\u5eab\u7cfb\u7d71\u4e2d\u522a\u9664\u8868\u6578\u64da\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u548c\u6ce8\u610f\u4e8b\u9805\u3002<\/p>\n<h2 id=\"%e5%88%aa%e9%99%a4%e8%a1%a8%e6%95%b8%e6%93%9a%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-iyJpxjwSrX\">\u522a\u9664\u8868\u6578\u64da\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>\u5728\u6578\u64da\u5eab\u4e2d\uff0c\u522a\u9664\u8868\u6578\u64da\u901a\u5e38\u662f\u901a\u904e SQL \u8a9e\u53e5\u4f86\u5be6\u73fe\u7684\u3002\u6700\u5e38\u7528\u7684\u8a9e\u53e5\u662f <code>DELETE<\/code> \u548c <code>TRUNCATE<\/code>\u3002\u9019\u5169\u8005\u4e4b\u9593\u6709\u4e00\u4e9b\u91cd\u8981\u7684\u5340\u5225\uff1a<\/p>\n<ul>\n<li><strong>DELETE<\/strong>: \u6b64\u8a9e\u53e5\u7528\u65bc\u522a\u9664\u8868\u4e2d\u7684\u7279\u5b9a\u884c\u3002\u53ef\u4ee5\u4f7f\u7528 <code>WHERE<\/code> \u5b50\u53e5\u4f86\u6307\u5b9a\u8981\u522a\u9664\u7684\u884c\u3002\u5982\u679c\u4e0d\u4f7f\u7528 <code>WHERE<\/code>\uff0c\u5247\u6703\u522a\u9664\u8868\u4e2d\u7684\u6240\u6709\u884c\uff0c\u4f46\u8868\u7d50\u69cb\u4ecd\u7136\u4fdd\u7559\u3002<\/li>\n<li><strong>TRUNCATE<\/strong>: \u6b64\u8a9e\u53e5\u7528\u65bc\u5feb\u901f\u522a\u9664\u8868\u4e2d\u7684\u6240\u6709\u884c\uff0c\u4e26\u4e14\u4e0d\u6703\u8a18\u9304\u6bcf\u4e00\u884c\u7684\u522a\u9664\u64cd\u4f5c\u3002\u9019\u610f\u5473\u8457 <code>TRUNCATE<\/code> \u901a\u5e38\u6bd4 <code>DELETE<\/code> \u66f4\u5feb\uff0c\u4f46\u7121\u6cd5\u4f7f\u7528 <code>WHERE<\/code> \u5b50\u53e5\u4f86\u9650\u5236\u522a\u9664\u7684\u7bc4\u570d\u3002<\/li>\n<\/ul>\n<h2 id=\"%e4%bd%bf%e7%94%a8-delete-%e8%aa%9e%e5%8f%a5%e5%88%aa%e9%99%a4%e6%95%b8%e6%93%9a-iyJpxjwSrX\">\u4f7f\u7528 DELETE \u8a9e\u53e5\u522a\u9664\u6578\u64da<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4f7f\u7528 <code>DELETE<\/code> \u8a9e\u53e5\u7684\u57fa\u672c\u8a9e\u6cd5\uff1a<\/p>\n<pre><code>DELETE FROM \u8868\u540d WHERE \u689d\u4ef6;<\/code><\/pre>\n<p>\u4f8b\u5982\uff0c\u5982\u679c\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba <code>customers<\/code> \u7684\u8868\uff0c\u4e26\u4e14\u60f3\u8981\u522a\u9664\u5ba2\u6236 ID \u70ba 5 \u7684\u8a18\u9304\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b SQL \u8a9e\u53e5\uff1a<\/p>\n<pre><code>DELETE FROM customers WHERE customer_id = 5;<\/code><\/pre>\n<p>\u5982\u679c\u5e0c\u671b\u522a\u9664\u6240\u6709\u5ba2\u6236\u7684\u6578\u64da\uff0c\u53ef\u4ee5\u9019\u6a23\u5beb\uff1a<\/p>\n<pre><code>DELETE FROM customers;<\/code><\/pre>\n<p>\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u9019\u6a23\u7684\u64cd\u4f5c\u6703\u522a\u9664\u6240\u6709\u884c\uff0c\u4f46\u8868\u7d50\u69cb\u4ecd\u7136\u5b58\u5728\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8-truncate-%e8%aa%9e%e5%8f%a5%e5%88%aa%e9%99%a4%e6%95%b8%e6%93%9a-iyJpxjwSrX\">\u4f7f\u7528 TRUNCATE \u8a9e\u53e5\u522a\u9664\u6578\u64da<\/h2>\n<p>\u5982\u679c\u9700\u8981\u5feb\u901f\u522a\u9664\u8868\u4e2d\u7684\u6240\u6709\u6578\u64da\uff0c\u53ef\u4ee5\u4f7f\u7528 <code>TRUNCATE<\/code> \u8a9e\u53e5\u3002\u5176\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>TRUNCATE TABLE \u8868\u540d;<\/code><\/pre>\n<p>\u4f8b\u5982\uff0c\u82e5\u8981\u522a\u9664 <code>customers<\/code> \u8868\u4e2d\u7684\u6240\u6709\u6578\u64da\uff0c\u53ef\u4ee5\u4f7f\u7528\uff1a<\/p>\n<pre><code>TRUNCATE TABLE customers;<\/code><\/pre>\n<p>\u9019\u6a23\u7684\u64cd\u4f5c\u6703\u6e05\u7a7a\u8868\u4e2d\u7684\u6240\u6709\u6578\u64da\uff0c\u4e26\u4e14\u7121\u6cd5\u6062\u5fa9\uff0c\u56e0\u6b64\u5728\u57f7\u884c\u6b64\u64cd\u4f5c\u4e4b\u524d\uff0c\u52d9\u5fc5\u78ba\u8a8d\u4e0d\u518d\u9700\u8981\u9019\u4e9b\u6578\u64da\u3002<\/p>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-iyJpxjwSrX\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<ul>\n<li>\u5728\u57f7\u884c <code>DELETE<\/code> \u6216 <code>TRUNCATE<\/code> \u64cd\u4f5c\u4e4b\u524d\uff0c\u5efa\u8b70\u5148\u5099\u4efd\u6578\u64da\uff0c\u4ee5\u9632\u6b62\u610f\u5916\u522a\u9664\u91cd\u8981\u4fe1\u606f\u3002<\/li>\n<li>\u4f7f\u7528 <code>DELETE<\/code> \u6642\uff0c\u82e5\u4e0d\u52a0 <code>WHERE<\/code> \u689d\u4ef6\uff0c\u5c07\u6703\u522a\u9664\u6574\u500b\u8868\u7684\u6578\u64da\uff0c\u9019\u662f\u4e0d\u53ef\u9006\u7684\u64cd\u4f5c\u3002<\/li>\n<li>\u4f7f\u7528 <code>TRUNCATE<\/code> \u6642\uff0c\u8acb\u6ce8\u610f\u6b64\u64cd\u4f5c\u7121\u6cd5\u88ab\u56de\u6efe\uff0c\u4e14\u6703\u91cd\u7f6e\u81ea\u589e\u5217\u7684\u8a08\u6578\u5668\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-iyJpxjwSrX\">\u7e3d\u7d50<\/h2>\n<p>\u522a\u9664\u6578\u64da\u5eab\u8868\u4e2d\u7684\u6578\u64da\u662f\u4e00\u9805\u57fa\u672c\u4f46\u91cd\u8981\u7684\u64cd\u4f5c\u3002\u7121\u8ad6\u662f\u4f7f\u7528 <code>DELETE<\/code> \u9084\u662f <code>TRUNCATE<\/code>\uff0c\u90fd\u9700\u8981\u8b39\u614e\u64cd\u4f5c\uff0c\u4ee5\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u6578\u64da\u4e1f\u5931\u3002\u4e86\u89e3\u9019\u4e9b\u57fa\u672c\u6982\u5ff5\u548c\u64cd\u4f5c\u65b9\u6cd5\uff0c\u5c07\u6709\u52a9\u65bc\u66f4\u6709\u6548\u5730\u7ba1\u7406\u6578\u64da\u5eab\u3002<\/p>\n<p>\u5982\u679c\u60a8\u9700\u8981\u66f4\u591a\u6709\u95dc <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u548c\u6578\u64da\u5eab\u7ba1\u7406\u7684\u8cc7\u8a0a\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u8cc7\u6e90\u548c\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u5728\u6578\u64da\u5eab\u4e2d\u522a\u9664\u4e00\u500b\u8868\u7684\u6578\u64da\uff0c\u638c\u63e1\u4f7f\u7528SQL\u8a9e\u53e5\u9032\u884c\u6578\u64da\u7ba1\u7406\u7684\u6280\u5de7\u8207\u6b65\u9a5f\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-175535","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/175535","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=175535"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/175535\/revisions"}],"predecessor-version":[{"id":175536,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/175535\/revisions\/175536"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=175535"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=175535"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=175535"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}