{"id":5933,"date":"2024-11-14T10:18:07","date_gmt":"2024-11-14T02:18:07","guid":{"rendered":"https:\/\/fwq.ai\/blog\/5933\/"},"modified":"2024-11-14T10:18:07","modified_gmt":"2024-11-14T02:18:07","slug":"sql%e5%88%a0%e9%99%a4%e8%af%ad%e5%8f%a5%e6%80%8e%e4%b9%88%e5%86%99","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/5933\/","title":{"rendered":"sql\u5220\u9664\u8bed\u53e5\u600e\u4e48\u5199"},"content":{"rendered":"<blockquote><p>\n  \u7b54\u6848\uff1asql delete \u8bed\u53e5\u7528\u4e8e\u4ece\u6570\u636e\u5e93\u4e2d\u5220\u9664\u8bb0\u5f55\u3002\u8be5\u8bed\u53e5\u7684\u7ec4\u6210\u90e8\u5206\u5305\u62ec\uff1adelete from\uff1a\u6307\u5b9a\u8981\u5220\u9664\u8bb0\u5f55\u7684\u8868\u3002where condition\uff1a\u6307\u5b9a\u8981\u5220\u9664\u7684\u8bb0\u5f55\u7684\u6761\u4ef6\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202406\/03\/2024060322421786470.jpg\" class=\"aligncenter\" title=\"sql\u5220\u9664\u8bed\u53e5\u600e\u4e48\u5199\u63d2\u56fe\" alt=\"sql\u5220\u9664\u8bed\u53e5\u600e\u4e48\u5199\u63d2\u56fe\" \/><\/p>\n<p><strong>SQL \u5220\u9664\u8bed\u53e5\uff1aDELETE<\/strong><\/p>\n<p><strong>\u7528\u9014\uff1a<\/strong><br \/>DELETE \u8bed\u53e5\u7528\u4e8e\u4ece\u6570\u636e\u5e93\u4e2d\u5220\u9664\u8bb0\u5f55\u3002<\/p>\n<p><strong>\u8bed\u6cd5\uff1a<\/strong><\/p>\n<pre>DELETE FROM table_name\nWHERE condition;<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p><strong>\u7ec4\u6210\u90e8\u5206\uff1a<\/strong><\/p>\n<ul>\n<li> <strong>DELETE FROM\uff1a<\/strong>\u6307\u5b9a\u8981\u5220\u9664\u8bb0\u5f55\u7684\u8868\u3002<\/li>\n<li> <strong>WHERE condition\uff1a<\/strong>\u6307\u5b9a\u8981\u5220\u9664\u7684\u8bb0\u5f55\u7684\u6761\u4ef6\u3002\u5982\u679c\u4e0d\u6307\u5b9a\u6761\u4ef6\uff0c\u5c06\u5220\u9664\u8868\u4e2d\u7684\u6240\u6709\u8bb0\u5f55\u3002<\/li>\n<\/ul>\n<p><strong>\u6b65\u9aa4\uff1a<\/strong><\/p>\n<ol>\n<li> <strong>\u6307\u5b9a\u8868\u540d\uff1a<\/strong>\u5728 &#8220;DELETE FROM&#8221; \u5b50\u53e5\u540e\u6307\u5b9a\u8981\u5220\u9664\u8bb0\u5f55\u7684\u8868\u7684\u540d\u79f0\u3002<\/li>\n<li> <strong>\u6307\u5b9a\u6761\u4ef6\uff1a<\/strong>\u5728 &#8220;WHERE&#8221; \u5b50\u53e5\u540e\u6307\u5b9a\u8981\u5220\u9664\u7684\u8bb0\u5f55\u7684\u6761\u4ef6\u3002\u6761\u4ef6\u53ef\u4ee5\u57fa\u4e8e\u4e00\u4e2a\u6216\u591a\u4e2a\u5217\u3002<\/li>\n<li> <strong>\u6267\u884c\u8bed\u53e5\uff1a<\/strong>\u4f7f\u7528 SQL \u6267\u884c\u8bed\u53e5\u6765\u5220\u9664\u7b26\u5408\u6761\u4ef6\u7684\u8bb0\u5f55\u3002<\/li>\n<\/ol>\n<p><strong>\u793a\u4f8b\uff1a<\/strong><\/p>\n<p>\u5220\u9664 employee \u8868\u4e2d id \u4e3a 10 \u7684\u8bb0\u5f55\uff1a<\/p>\n<pre>DELETE FROM employee\nWHERE id = 10;<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u5220\u9664 student \u8868\u4e2d\u6210\u7ee9\u5c0f\u4e8e 60 \u7684\u6240\u6709\u8bb0\u5f55\uff1a<\/p>\n<pre>DELETE FROM student\nWHERE score &lt; 60;<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p><strong>\u6ce8\u610f\u4e8b\u9879\uff1a<\/strong><\/p>\n<ul>\n<li>DELETE \u8bed\u53e5\u4e0d\u53ef\u9006\uff0c\u56e0\u6b64\u5728\u6267\u884c\u4e4b\u524d\u5e94\u4ed4\u7ec6\u68c0\u67e5\u3002<\/li>\n<li>\u5982\u679c\u4e0d\u6307\u5b9a\u6761\u4ef6\uff0cDELETE \u8bed\u53e5\u5c06\u5220\u9664\u8868\u4e2d\u7684\u6240\u6709\u8bb0\u5f55\uff0c\u8bf7\u5c0f\u5fc3\u4f7f\u7528\u3002<\/li>\n<li>\u5220\u9664\u8bb0\u5f55\u540e\uff0c\u5176\u4ed6\u8868\u4e2d\u5f15\u7528\u8fd9\u4e9b\u8bb0\u5f55\u7684\u5916\u952e\u53ef\u80fd\u4f1a\u51fa\u73b0\u9519\u8bef\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662fsql\u5220\u9664\u8bed\u53e5\u600e\u4e48\u5199\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u7f51\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u7b54\u6848\uff1asql delete \u8bed\u53e5\u7528\u4e8e\u4ece\u6570\u636e\u5e93\u4e2d\u5220\u9664\u8bb0\u5f55\u3002\u8be5\u8bed\u53e5\u7684\u7ec4\u6210\u90e8\u5206\u5305\u62ec\uff1adelete from\uff1a\u6307\u5b9a\u8981\u5220\u9664\u8bb0\u5f55\u7684\u8868\u3002where condition\uff1a\u6307\u5b9a\u8981\u5220\u9664\u7684\u8bb0\u5f55\u7684\u6761\u4ef6\u3002 SQL \u5220\u9664\u8bed\u53e5\uff1aDELETE \u7528\u9014\uff1aDELETE \u8bed\u53e5\u7528\u4e8e\u4ece\u6570\u636e\u5e93\u4e2d\u5220\u9664\u8bb0\u5f55\u3002 \u8bed\u6cd5\uff1a DELETE FROM table_name WHERE condition; \u767b\u5f55\u540e\u590d\u5236 \u7ec4\u6210\u90e8\u5206\uff1a DELETE FROM\uff1a\u6307\u5b9a\u8981\u5220\u9664\u8bb0\u5f55\u7684\u8868\u3002 WHERE condition\uff1a\u6307\u5b9a\u8981\u5220\u9664\u7684\u8bb0\u5f55\u7684\u6761\u4ef6\u3002\u5982\u679c\u4e0d\u6307\u5b9a\u6761\u4ef6\uff0c\u5c06\u5220\u9664\u8868\u4e2d\u7684\u6240\u6709\u8bb0\u5f55\u3002 \u6b65\u9aa4\uff1a \u6307\u5b9a\u8868\u540d\uff1a\u5728 &#8220;DELETE FROM&#8221; \u5b50\u53e5\u540e\u6307\u5b9a\u8981\u5220\u9664\u8bb0\u5f55\u7684\u8868\u7684\u540d\u79f0\u3002 \u6307\u5b9a\u6761\u4ef6\uff1a\u5728 &#8220;WHERE&#8221; \u5b50\u53e5\u540e\u6307\u5b9a\u8981\u5220\u9664\u7684\u8bb0\u5f55\u7684\u6761\u4ef6\u3002\u6761\u4ef6\u53ef\u4ee5\u57fa\u4e8e\u4e00\u4e2a\u6216\u591a\u4e2a\u5217\u3002 \u6267\u884c\u8bed\u53e5\uff1a\u4f7f\u7528 SQL \u6267\u884c\u8bed\u53e5\u6765\u5220\u9664\u7b26\u5408\u6761\u4ef6\u7684\u8bb0\u5f55\u3002 \u793a\u4f8b\uff1a \u5220\u9664 employee \u8868\u4e2d id \u4e3a 10 \u7684\u8bb0\u5f55\uff1a DELETE FROM employee WHERE id = 10; \u767b\u5f55\u540e\u590d\u5236 \u5220\u9664 student \u8868\u4e2d\u6210\u7ee9\u5c0f\u4e8e 60 \u7684\u6240\u6709\u8bb0\u5f55\uff1a DELETE FROM [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-5933","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5933","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=5933"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5933\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=5933"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=5933"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=5933"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}