{"id":5688,"date":"2024-11-14T12:08:26","date_gmt":"2024-11-14T04:08:26","guid":{"rendered":"https:\/\/fwq.ai\/blog\/5688\/"},"modified":"2024-11-14T12:08:26","modified_gmt":"2024-11-14T04:08:26","slug":"sql%e6%80%8e%e4%b9%88%e5%88%a0%e9%99%a4%e8%a1%8c","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/5688\/","title":{"rendered":"sql\u600e\u4e48\u5220\u9664\u884c"},"content":{"rendered":"

\n \u5728 sql \u4e2d\uff0c\u6709\u51e0\u79cd\u65b9\u6cd5\u53ef\u4ee5\u5220\u9664\u8868\u4e2d\u7684\u884c\u3002\u6700\u5e38\u89c1\u7684\u662f\u4f7f\u7528 delete \u8bed\u53e5\uff0c\u5176\u4e2d\u60a8\u53ef\u4ee5\u6307\u5b9a\u6761\u4ef6\u4ee5\u5220\u9664\u7279\u5b9a\u884c\uff1b\u53e6\u4e00\u79cd\u65b9\u6cd5\u662f\u4f7f\u7528 truncate table \u8bed\u53e5\uff0c\u5b83\u4f1a\u7acb\u5373\u5220\u9664\u6240\u6709\u884c\uff0c\u4f46\u4e0d\u53ef\u64a4\u9500\u3002\n<\/p><\/blockquote>\n

\"sql\u600e\u4e48\u5220\u9664\u884c\u63d2\u56fe\"<\/p>\n

SQL \u4e2d\u5220\u9664\u884c<\/strong><\/p>\n

\u5220\u9664\u884c\u662f SQL \u4e2d\u4e00\u9879\u91cd\u8981\u7684\u64cd\u4f5c\uff0c\u53ef\u7528\u4e8e\u4ece\u6570\u636e\u5e93\u8868\u4e2d\u6e05\u9664\u4e0d\u518d\u9700\u8981\u7684\u6570\u636e\u3002\u6709\u51e0\u79cd\u4e0d\u540c\u7684\u65b9\u6cd5\u53ef\u4ee5\u5b9e\u73b0\u6b64\u76ee\u7684\u3002<\/p>\n

DELETE \u8bed\u53e5<\/strong><\/p>\n

DELETE \u8bed\u53e5\u662f\u6700\u5e38\u89c1\u7684\u7528\u4e8e\u5220\u9664\u884c\u7684\u547d\u4ee4\u3002\u5b83\u7684\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n

DELETE FROM table_name\nWHERE condition;<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
\u5176\u4e2d\uff1a<\/p>\n
    \n
  • table_name \u662f\u8981\u4ece\u4e2d\u5220\u9664\u884c\u7684\u8868\u540d\u3002<\/li>\n
  • condition \u662f\u4e00\u4e2a\u53ef\u9009\u6761\u4ef6\uff0c\u7528\u4e8e\u6307\u5b9a\u8981\u5220\u9664\u7684\u7279\u5b9a\u884c\u3002\u5982\u679c\u6ca1\u6709\u6307\u5b9a\u6761\u4ef6\uff0c\u5219\u5c06\u5220\u9664\u8868\u4e2d\u7684\u6240\u6709\u884c\u3002<\/li>\n<\/ul>\n
    \u793a\u4f8b\uff1a<\/strong><\/p>\n
    \u4ee5\u4e0b DELETE \u8bed\u53e5\u5c06\u4ece customers \u8868\u4e2d\u5220\u9664\u6240\u6709\u59d3\u6c0f\u4e3a “Smith” \u7684\u884c\uff1a<\/p>\n
    DELETE FROM customers\nWHERE last_name = 'Smith';<\/pre>\n
      \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
    TRUNCATE TABLE \u8bed\u53e5<\/strong><\/p>\n
    TRUNCATE TABLE \u8bed\u53e5\u662f\u53e6\u4e00\u79cd\u5220\u9664\u8868\u4e2d\u6240\u6709\u884c\u7684\u5feb\u901f\u65b9\u6cd5\u3002\u4e0e DELETE \u8bed\u53e5\u4e0d\u540c\uff0cTRUNCATE TABLE \u4e0d\u4f1a\u89e6\u53d1\u4efb\u4f55\u89e6\u53d1\u5668\u6216\u7ea7\u8054\u5220\u9664\u53d7\u5f71\u54cd\u884c\u3002<\/p>\n
    \u8bed\u6cd5\uff1a<\/strong><\/p>\n
    TRUNCATE TABLE table_name;<\/pre>\n
      \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
    \u8b66\u544a\uff1a<\/strong><\/p>\n
    TRUNCATE TABLE \u8bed\u53e5\u5c06\u7acb\u5373\u4ece\u8868\u4e2d\u5220\u9664\u6240\u6709\u884c\uff0c\u4e14\u65e0\u6cd5\u64a4\u6d88\u3002<\/p>\n
    \u8003\u8651\u56e0\u7d20<\/strong><\/p>\n
    \u5728\u5220\u9664\u884c\u4e4b\u524d\uff0c\u6709\u51e0\u70b9\u9700\u8981\u8003\u8651\uff1a<\/p>\n
      \n
    •  \u6570\u636e\u5b8c\u6574\u6027\uff1a<\/strong>\u786e\u4fdd\u5220\u9664\u884c\u4e0d\u4f1a\u7834\u574f\u8868\u4e4b\u95f4\u7684\u5173\u7cfb\u3002<\/li>\n
    •  \u5907\u4efd\uff1a<\/strong>\u5728\u5220\u9664\u884c\u4e4b\u524d\u5907\u4efd\u8868\uff0c\u4ee5\u9632\u4e07\u4e00\u9700\u8981\u6062\u590d\u6570\u636e\u3002<\/li>\n
    •  \u89e6\u53d1\u5668\uff1a<\/strong>\u5982\u679c\u8868\u4e0a\u6709\u89e6\u53d1\u5668\uff0c\u5219\u5728\u5220\u9664\u884c\u4e4b\u524d\u5e94\u7981\u7528\u5b83\u4eec\uff0c\u5426\u5219\u53ef\u80fd\u4f1a\u51fa\u73b0\u9519\u8bef\u3002<\/li>\n<\/ul>\n
      \u4ee5\u4e0a\u5c31\u662fsql\u600e\u4e48\u5220\u9664\u884c\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":"
      \u5728 sql \u4e2d\uff0c\u6709\u51e0\u79cd\u65b9\u6cd5\u53ef\u4ee5\u5220\u9664\u8868\u4e2d\u7684\u884c\u3002\u6700\u5e38\u89c1\u7684\u662f\u4f7f\u7528 delete \u8bed\u53e5\uff0c\u5176\u4e2d\u60a8\u53ef\u4ee5\u6307\u5b9a\u6761\u4ef6\u4ee5\u5220\u9664\u7279\u5b9a\u884c\uff1b\u53e6\u4e00\u79cd\u65b9\u6cd5\u662f\u4f7f\u7528 truncate table \u8bed\u53e5\uff0c\u5b83\u4f1a\u7acb\u5373\u5220\u9664\u6240\u6709\u884c\uff0c\u4f46\u4e0d\u53ef\u64a4\u9500\u3002 SQL \u4e2d\u5220\u9664\u884c \u5220\u9664\u884c\u662f SQL \u4e2d\u4e00\u9879\u91cd\u8981\u7684\u64cd\u4f5c\uff0c\u53ef\u7528\u4e8e\u4ece\u6570\u636e\u5e93\u8868\u4e2d\u6e05\u9664\u4e0d\u518d\u9700\u8981\u7684\u6570\u636e\u3002\u6709\u51e0\u79cd\u4e0d\u540c\u7684\u65b9\u6cd5\u53ef\u4ee5\u5b9e\u73b0\u6b64\u76ee\u7684\u3002 DELETE \u8bed\u53e5 DELETE \u8bed\u53e5\u662f\u6700\u5e38\u89c1\u7684\u7528\u4e8e\u5220\u9664\u884c\u7684\u547d\u4ee4\u3002\u5b83\u7684\u8bed\u6cd5\u5982\u4e0b\uff1a DELETE FROM table_name WHERE condition; \u767b\u5f55\u540e\u590d\u5236 \u5176\u4e2d\uff1a table_name \u662f\u8981\u4ece\u4e2d\u5220\u9664\u884c\u7684\u8868\u540d\u3002 condition \u662f\u4e00\u4e2a\u53ef\u9009\u6761\u4ef6\uff0c\u7528\u4e8e\u6307\u5b9a\u8981\u5220\u9664\u7684\u7279\u5b9a\u884c\u3002\u5982\u679c\u6ca1\u6709\u6307\u5b9a\u6761\u4ef6\uff0c\u5219\u5c06\u5220\u9664\u8868\u4e2d\u7684\u6240\u6709\u884c\u3002 \u793a\u4f8b\uff1a \u4ee5\u4e0b DELETE \u8bed\u53e5\u5c06\u4ece customers \u8868\u4e2d\u5220\u9664\u6240\u6709\u59d3\u6c0f\u4e3a “Smith” \u7684\u884c\uff1a DELETE FROM customers WHERE last_name = ‘Smith’; \u767b\u5f55\u540e\u590d\u5236 TRUNCATE TABLE \u8bed\u53e5 TRUNCATE TABLE \u8bed\u53e5\u662f\u53e6\u4e00\u79cd\u5220\u9664\u8868\u4e2d\u6240\u6709\u884c\u7684\u5feb\u901f\u65b9\u6cd5\u3002\u4e0e DELETE \u8bed\u53e5\u4e0d\u540c\uff0cTRUNCATE TABLE \u4e0d\u4f1a\u89e6\u53d1\u4efb\u4f55\u89e6\u53d1\u5668\u6216\u7ea7\u8054\u5220\u9664\u53d7\u5f71\u54cd\u884c\u3002 \u8bed\u6cd5\uff1a […]<\/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-5688","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5688","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=5688"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5688\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=5688"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=5688"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=5688"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}