{"id":5200,"date":"2024-11-14T12:20:18","date_gmt":"2024-11-14T04:20:18","guid":{"rendered":"https:\/\/fwq.ai\/blog\/5200\/"},"modified":"2024-11-14T12:20:18","modified_gmt":"2024-11-14T04:20:18","slug":"sql%e4%b8%adtruncate%e8%af%ad%e5%8f%a5%e7%94%a8%e6%b3%95","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/5200\/","title":{"rendered":"sql\u4e2dtruncate\u8bed\u53e5\u7528\u6cd5"},"content":{"rendered":"<blockquote><p>\n  truncate \u8bed\u53e5\u662f\u4e00\u79cd dml \u8bed\u53e5\uff0c\u7528\u4e8e\u4ece\u8868\u4e2d\u5220\u9664\u6240\u6709\u884c\uff0c\u7279\u70b9\u5982\u4e0b\uff1a\u5feb\u901f\uff1a\u6bd4 delete \u5feb\uff0c\u65e0\u9700\u9010\u884c\u626b\u63cf\uff1b\u4e0d\u8bb0\u5f55\uff1a\u4e0d\u8bb0\u5f55\u5728\u4e8b\u52a1\u65e5\u5fd7\u4e2d\uff0c\u65e0\u5f00\u9500\uff1b\u91ca\u653e\u7a7a\u95f4\uff1a\u7acb\u5373\u91ca\u653e\u8868\u7a7a\u95f4\uff1b\u4e0d\u53ef\u6062\u590d\uff1a\u65e0\u6cd5\u6062\u590d\u5df2\u5220\u9664\u884c\uff1b\u4e0d\u89e6\u53d1\u89e6\u53d1\u5668\uff1a\u4e0d\u4f1a\u89e6\u53d1\u8868\u4e0a\u7684\u89e6\u53d1\u5668\uff1b\u5f71\u54cd\u7d22\u5f15\uff1a\u9700\u91cd\u5efa\u7d22\u5f15\uff1b\u8bed\u6cd5\uff1atruncate table table_name;\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202405\/24\/2024052420181867932.jpg\" class=\"aligncenter\" title=\"sql\u4e2dtruncate\u8bed\u53e5\u7528\u6cd5\u63d2\u56fe\" alt=\"sql\u4e2dtruncate\u8bed\u53e5\u7528\u6cd5\u63d2\u56fe\" \/><\/p>\n<p><strong>TRUNCATE \u8bed\u53e5\u5728 SQL \u4e2d\u7684\u7528\u6cd5<\/strong><\/p>\n<p><strong>\u4ec0\u4e48\u662f TRUNCATE \u8bed\u53e5\uff1f<\/strong><\/p>\n<p>TRUNCATE \u8bed\u53e5\u662f\u4e00\u79cd\u6570\u636e\u64cd\u4f5c\u8bed\u8a00 (DML) \u8bed\u53e5\uff0c\u7528\u4e8e\u4ece\u8868\u4e2d\u5220\u9664\u6240\u6709\u884c\u3002<\/p>\n<p><strong>TRUNCATE \u8bed\u53e5\u7684\u4f18\u70b9<\/strong><\/p>\n<ul>\n<li> <strong>\u5feb\u901f\uff1a<\/strong>TRUNCATE \u6bd4 DELETE \u8bed\u53e5\u5feb\u5f97\u591a\uff0c\u56e0\u4e3a\u4e0d\u9700\u8981\u9010\u884c\u626b\u63cf\u8868\u3002<\/li>\n<li> <strong>\u4e0d\u8bb0\u5f55\uff1a<\/strong>TRUNCATE \u4e0d\u4f1a\u8bb0\u5f55\u5728\u4e8b\u52a1\u65e5\u5fd7\u4e2d\uff0c\u56e0\u6b64\u4e0d\u4f1a\u4ea7\u751f\u4efb\u4f55\u5f00\u9500\u3002<\/li>\n<li> <strong>\u91ca\u653e\u7a7a\u95f4\uff1a<\/strong>TRUNCATE \u4f1a\u91ca\u653e\u8868\u5360\u7528\u7684\u7a7a\u95f4\uff0c\u7acb\u5373\u53ef\u4f9b\u5176\u4ed6\u8868\u4f7f\u7528\u3002<\/li>\n<\/ul>\n<p><strong>TRUNCATE \u8bed\u53e5\u7684\u7f3a\u70b9<\/strong><\/p>\n<ul>\n<li> <strong>\u4e0d\u53ef\u6062\u590d\uff1a<\/strong>TRUNCATE \u65e0\u6cd5\u6062\u590d\u5df2\u5220\u9664\u7684\u884c\uff0c\u56e0\u6b64\u4f7f\u7528\u65f6\u8981\u8c28\u614e\u3002<\/li>\n<li> <strong>\u4e0d\u89e6\u53d1\u89e6\u53d1\u5668\uff1a<\/strong>TRUNCATE \u4e0d\u4f1a\u89e6\u53d1\u8868\u4e0a\u7684\u4efb\u4f55\u89e6\u53d1\u5668\u3002<\/li>\n<li> <strong>\u5f71\u54cd\u7d22\u5f15\uff1a<\/strong>TRUNCATE \u4f1a\u5220\u9664\u6240\u6709\u7d22\u5f15\uff0c\u9700\u8981\u5728\u64cd\u4f5c\u540e\u91cd\u5efa\u7d22\u5f15\u3002<\/li>\n<\/ul>\n<p><strong>TRUNCATE \u8bed\u53e5\u7684\u8bed\u6cd5<\/strong><\/p>\n<pre>TRUNCATE TABLE table_name;<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p><strong>\u793a\u4f8b<\/strong><\/p>\n<p>\u8981\u4ece\u540d\u4e3a &#8220;orders&#8221; \u7684\u8868\u4e2d\u5220\u9664\u6240\u6709\u884c\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8bed\u53e5\uff1a<\/p>\n<pre>TRUNCATE TABLE orders;<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p><strong>\u6ce8\u610f\u4e8b\u9879<\/strong><\/p>\n<ul>\n<li>TRUNCATE \u8bed\u53e5\u53ea\u80fd\u7528\u4e8e\u8868\uff0c\u4e0d\u80fd\u7528\u4e8e\u89c6\u56fe\u6216\u5176\u4ed6\u6570\u636e\u5e93\u5bf9\u8c61\u3002<\/li>\n<li>TRUNCATE \u8bed\u53e5\u4e0d\u80fd\u4f7f\u7528 WHERE \u5b50\u53e5\u3002<\/li>\n<li>\u5728\u5bf9\u5305\u542b\u5916\u952e\u7ea6\u675f\u7684\u8868\u4f7f\u7528 TRUNCATE \u8bed\u53e5\u4e4b\u524d\uff0c\u8bf7\u786e\u4fdd\u5df2\u5220\u9664\u6240\u6709\u76f8\u5173\u7684\u5916\u952e\u6570\u636e\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662fsql\u4e2dtruncate\u8bed\u53e5\u7528\u6cd5\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>truncate \u8bed\u53e5\u662f\u4e00\u79cd dml \u8bed\u53e5\uff0c\u7528\u4e8e\u4ece\u8868\u4e2d\u5220\u9664\u6240\u6709\u884c\uff0c\u7279\u70b9\u5982\u4e0b\uff1a\u5feb\u901f\uff1a\u6bd4 delete \u5feb\uff0c\u65e0\u9700\u9010\u884c\u626b\u63cf\uff1b\u4e0d\u8bb0\u5f55\uff1a\u4e0d\u8bb0\u5f55\u5728\u4e8b\u52a1\u65e5\u5fd7\u4e2d\uff0c\u65e0\u5f00\u9500\uff1b\u91ca\u653e\u7a7a\u95f4\uff1a\u7acb\u5373\u91ca\u653e\u8868\u7a7a\u95f4\uff1b\u4e0d\u53ef\u6062\u590d\uff1a\u65e0\u6cd5\u6062\u590d\u5df2\u5220\u9664\u884c\uff1b\u4e0d\u89e6\u53d1\u89e6\u53d1\u5668\uff1a\u4e0d\u4f1a\u89e6\u53d1\u8868\u4e0a\u7684\u89e6\u53d1\u5668\uff1b\u5f71\u54cd\u7d22\u5f15\uff1a\u9700\u91cd\u5efa\u7d22\u5f15\uff1b\u8bed\u6cd5\uff1atruncate table table_name; TRUNCATE \u8bed\u53e5\u5728 SQL \u4e2d\u7684\u7528\u6cd5 \u4ec0\u4e48\u662f TRUNCATE \u8bed\u53e5\uff1f TRUNCATE \u8bed\u53e5\u662f\u4e00\u79cd\u6570\u636e\u64cd\u4f5c\u8bed\u8a00 (DML) \u8bed\u53e5\uff0c\u7528\u4e8e\u4ece\u8868\u4e2d\u5220\u9664\u6240\u6709\u884c\u3002 TRUNCATE \u8bed\u53e5\u7684\u4f18\u70b9 \u5feb\u901f\uff1aTRUNCATE \u6bd4 DELETE \u8bed\u53e5\u5feb\u5f97\u591a\uff0c\u56e0\u4e3a\u4e0d\u9700\u8981\u9010\u884c\u626b\u63cf\u8868\u3002 \u4e0d\u8bb0\u5f55\uff1aTRUNCATE \u4e0d\u4f1a\u8bb0\u5f55\u5728\u4e8b\u52a1\u65e5\u5fd7\u4e2d\uff0c\u56e0\u6b64\u4e0d\u4f1a\u4ea7\u751f\u4efb\u4f55\u5f00\u9500\u3002 \u91ca\u653e\u7a7a\u95f4\uff1aTRUNCATE \u4f1a\u91ca\u653e\u8868\u5360\u7528\u7684\u7a7a\u95f4\uff0c\u7acb\u5373\u53ef\u4f9b\u5176\u4ed6\u8868\u4f7f\u7528\u3002 TRUNCATE \u8bed\u53e5\u7684\u7f3a\u70b9 \u4e0d\u53ef\u6062\u590d\uff1aTRUNCATE \u65e0\u6cd5\u6062\u590d\u5df2\u5220\u9664\u7684\u884c\uff0c\u56e0\u6b64\u4f7f\u7528\u65f6\u8981\u8c28\u614e\u3002 \u4e0d\u89e6\u53d1\u89e6\u53d1\u5668\uff1aTRUNCATE \u4e0d\u4f1a\u89e6\u53d1\u8868\u4e0a\u7684\u4efb\u4f55\u89e6\u53d1\u5668\u3002 \u5f71\u54cd\u7d22\u5f15\uff1aTRUNCATE \u4f1a\u5220\u9664\u6240\u6709\u7d22\u5f15\uff0c\u9700\u8981\u5728\u64cd\u4f5c\u540e\u91cd\u5efa\u7d22\u5f15\u3002 TRUNCATE \u8bed\u53e5\u7684\u8bed\u6cd5 TRUNCATE TABLE table_name; \u767b\u5f55\u540e\u590d\u5236 \u793a\u4f8b \u8981\u4ece\u540d\u4e3a &#8220;orders&#8221; \u7684\u8868\u4e2d\u5220\u9664\u6240\u6709\u884c\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8bed\u53e5\uff1a TRUNCATE TABLE orders; \u767b\u5f55\u540e\u590d\u5236 \u6ce8\u610f\u4e8b\u9879 TRUNCATE \u8bed\u53e5\u53ea\u80fd\u7528\u4e8e\u8868\uff0c\u4e0d\u80fd\u7528\u4e8e\u89c6\u56fe\u6216\u5176\u4ed6\u6570\u636e\u5e93\u5bf9\u8c61\u3002 TRUNCATE [&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-5200","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5200","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=5200"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5200\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=5200"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=5200"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=5200"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}