{"id":711,"date":"2021-07-25T09:36:04","date_gmt":"2021-07-25T09:36:04","guid":{"rendered":"https:\/\/hsin-life.com\/?p=711"},"modified":"2022-01-17T02:44:43","modified_gmt":"2022-01-17T02:44:43","slug":"%e8%b3%87%e6%96%99%e5%ba%absql-%e4%bd%bf%e7%94%a8delete%e3%80%81truncate-table%e8%88%87drop-table%e7%9a%84%e5%b7%ae%e7%95%b0","status":"publish","type":"post","link":"https:\/\/hsin-life.com\/archives\/711","title":{"rendered":"\u8cc7\u6599\u5eabSQL &#8211; \u4f7f\u7528Delete\u3001Truncate Table\u8207Drop Table\u7684\u5dee\u7570"},"content":{"rendered":"\n<p>\u76f8\u4fe1\u5927\u90e8\u5206\u7684\u958b\u767c\u4eba\u54e1\u4e00\u5b9a\u90fd\u6703\u78b0\u5230<a href=\"https:\/\/zh.wikipedia.org\/wiki\/%E6%95%B0%E6%8D%AE%E5%BA%93\">\u8cc7\u6599\u5eab<\/a>SQL<\/p>\n\n\n\n<p>\u5728\u958b\u767c\u968e\u6bb5\u5e38\u5e38\u8981\u6e2c\u8a66\uff0c\u6211\u5011\u9700\u8981\u522a\u9664\u6574\u500b\u8cc7\u6599\u8868\u5167\u7684\u8cc7\u6599\uff0c<\/p>\n\n\n\n<p>\u6709\u4e09\u7a2e\u65b9\u6cd5\u53ef\u4ee5\u53c3\u8003\u4f7f\u7528\uff0c\u5206\u5225\u662f\u4f7f\u7528Delete\u3001Trancate\u8207Drop\uff0c\u4f7f\u9019\u4e09\u7a2e\u65b9\u5f0f\u7684\u5dee\u7570\u5728\u54ea\u88e1\u5462?<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Delete <\/strong><\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>delete from <meta charset=\"utf-8\">table_name;<\/code><\/pre>\n\n\n\n<p>\u4f7f\u7528Delete\u8a9e\u6cd5\uff0c\u4e0d\u52a0\u4efb\u4f55Where\u689d\u4ef6\u4e0b\uff0c\u662f\u53ef\u4ee5\u79fb\u9664\u6574\u500bTable\u7684\u8cc7\u6599\uff0c\u4f46\u662f\u537b\u6703\u8017\u7528\u5927\u91cf\u8cc7\u6e90<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">Delete\u5c6cDML\u547d\u4ee4\uff0c\u4e0d\u52a0\u4efb\u4f55Where\u689d\u4ef6\u4e0b\uff0c\u6703\u4e00\u7b46\u4e00\u7b46\u7684\u79fb\u9664\u8cc7\u6599\u5217\uff0c\u4e14\u5728<strong><span class=\"has-inline-color has-vivid-red-color\">\u4ea4\u6613\u8a18\u9304\u4e2d\u6bcf\u7b46\u522a\u9664\u7684\u8cc7\u6599\uff0c\u90fd\u6703\u8a18\u9304\u6210\u4e00\u500b\u9805\u76ee<\/span><\/strong>\uff0c\u7576\u6574\u500bTable\u7684\u8cc7\u6599\u79fb\u9664\u5b8c\u6642\uff0c\u5df2\u8017\u7528\u8a31\u591a\u6642\u9593<\/h5>\n\n\n\n<h5 class=\"wp-block-heading\">\u82e5Table\u5b58\u5728\u522a\u9664\u7684\u89f8\u767c\u7a0b\u5e8f(Trigger)\u6642\uff0c\u5c07\u6703<strong><span class=\"has-inline-color has-vivid-red-color\">\u5f15\u767c\u89f8\u767c\u7a0b\u5e8f<\/span><\/strong><\/h5>\n\n\n\n<h5 class=\"wp-block-heading\">\u5982\u679c\u8a72Table\u5305\u542b\u8b58\u5225\u6b04\u4f4d\uff0c\u4f7f\u7528Delete\u9673\u8ff0\u5f0f\u522a\u9664\u8cc7\u6599\u8868\u4e2d\u6240\u6709\u8cc7\u6599\u6642\uff0c\u4e26<strong><span class=\"has-inline-color has-vivid-red-color\">\u4e0d\u6703\u8b93\u8b58\u5225\u7de8\u865f\u91cd\u7f6e<\/span><\/strong>\uff0c\u6240\u4ee5\u5f8c\u7e8c\u518d\u65b0\u589e\u7684\u8cc7\u6599\uff0c\u4ecd\u6703\u5f9e\u4e4b\u524d\u6700\u5f8c\u4e00\u500b\u7de8\u865f\u4e4b\u5f8c\u7e7c\u7e8c\u7de8\u865f\u4e0b\u53bb<\/h5>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Truncate <\/strong><\/h2>\n\n\n\n<pre class=\"wp-block-preformatted\">truncate table table_name;<\/pre>\n\n\n\n<p>\u4f7f\u7528Truncate Table \u6703<strong><span class=\"has-inline-color has-vivid-red-color\">\u79fb\u9664\u8cc7\u6599\u8868\u4e2d\u7684\u6240\u6709\u8cc7\u6599\u5217<\/span><\/strong>\uff0c\u4f46\u6703<strong><span class=\"has-inline-color has-vivid-red-color\">\u4fdd\u7559\u8cc7\u6599\u8868\u7d50\u69cb\u53ca\u5176\u6b04\u4f4d\u3001\u689d\u4ef6\u7d04\u675f\u3001\u7d22\u5f15<\/span><\/strong>\u7b49\u3002<\/p>\n\n\n\n<p>\u5982\u679c\u8a72Table\u5305\u542b\u8b58\u5225\u6b04\u4f4d\uff0c\u9019\u500b<strong><span class=\"has-inline-color has-vivid-red-color\">\u8b58\u5225\u7de8\u865f\u6703\u91cd\u8a2d\u70ba\u539f\u672c\u5b9a\u7fa9\u7684\u521d\u59cb\u503c<\/span><\/strong>\uff0c\u5982\u679c\u672a\u5b9a\u7fa9\u4efb\u4f55\u521d\u59cb\u503c\uff0c\u5c31\u6703\u4f7f\u7528\u9810\u8a2d\u503c 1\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Trance Table \u8207Delete \u6bd4\u8f03\u7684\u512a\u9ede\u70ba<\/h4>\n\n\n\n<h5 class=\"wp-block-heading\">\u4f7f\u7528\u7684\u4ea4\u6613\u8a18\u9304\u7a7a\u9593\u8f03\u5c11\uff1aTruncate Table\u6703\u53d6\u6d88\u914d\u7f6e\u7528\u4f86\u5132\u5b58\u8cc7\u6599\u8868\u8cc7\u6599\u7684\u8cc7\u6599\u9801\uff0c\u4ee5\u79fb\u9664\u8cc7\u6599\uff0c\u6240\u4ee5\u4ea4\u6613\u8a18\u9304\u53ea\u6703\u8a18\u9304\u9801\u9762\u7684\u53d6\u6d88\u914d\u7f6e\u3002<\/h5>\n\n\n\n<h5 class=\"wp-block-heading\">\u901a\u5e38\u6703\u4f7f\u7528\u8f03\u5c11\u9396\u5b9a\uff1aDelete\u6703\u9396\u5b9a\u6bcf\u4e00\u7b46\u8cc7\u6599\uff0c\u4ee5\u4fbf\u57f7\u884c\u522a\u9664\uff0c\u4f46Truncate Table\u53ea\u9396\u5b9a\u8cc7\u6599\u8868\u548c\u9801\u9762\uff0c\u4e0d\u6703\u9396\u5b9a\u6bcf\u500b\u8cc7\u6599\u5217\u3002<\/h5>\n\n\n\n<h5 class=\"wp-block-heading\">\u901f\u5ea6\u8f03\u5feb\uff1a\u7d9c\u5408\u4ee5\u4e0a\u5169\u9ede\uff0cTruncate Table\u6703\u6bd4Delete\u5feb\uff01<\/h5>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Drop Table<\/strong><\/h2>\n\n\n\n<p>\u4f7f\u7528Drop Table\u6703<strong><span class=\"has-inline-color has-vivid-red-color\">\u79fb\u9664\u4e00\u6216\u591a\u500b\u8cc7\u6599\u8868\u5b9a\u7fa9\u53ca\u9019\u4e9b\u8cc7\u6599\u8868\u7684\u6240\u6709\u8cc7\u6599\u3001\u7d22\u5f15\u3001\u89f8\u767c\u7a0b\u5e8f\u3001\u689d\u4ef6\u7d04\u675f\u548c\u6b0a\u9650\u898f\u683c<\/span><\/strong>\uff0c\u4e5f\u5c31\u662f\u5b8c\u5168\u522a\u9664\u4e00\u500b\u8cc7\u6599\u8868<\/p>\n\n\n\n<p>\u7576\u5378\u9664\u8cc7\u6599\u8868\u6642\uff0c\u8cc7\u6599\u8868\u7684\u898f\u5247\u6216\u9810\u8a2d\u503c\u6703\u5931\u53bb\u5b83\u5011\u7684\u7e6b\u7d50\uff0c\u8cc7\u6599\u8868\u7684\u4efb\u4f55\u76f8\u95dc\u689d\u4ef6\u7d04\u675f\u6216\u89f8\u767c\u7a0b\u5e8f\u4e5f\u90fd\u6703\u81ea\u52d5\u5378\u9664<\/p>\n\n\n\n<p>\u5982\u679c\u91cd\u65b0\u5efa\u7acb\u8cc7\u6599\u8868\uff0c\u60a8\u5fc5\u9808\u91cd\u65b0\u7e6b\u7d50\u9069\u7576\u7684\u898f\u5247\u548c\u9810\u8a2d\u503c\u3001\u91cd\u65b0\u5efa\u7acb\u4efb\u4f55\u89f8\u767c\u7a0b\u5e8f\uff0c\u4ee5\u53ca\u52a0\u5165\u6240\u6709\u5fc5\u8981\u7684\u689d\u4ef6\u7d04\u675f<\/p>\n\n\n\n<p>\u6240\u4ee5\u4f7f\u7528Drop Table\u5f8c\uff0c\u82e5\u4f60\u8981\u91cd\u65b0\u4f7f\u7528\u88ab\u522a\u9664\u7684\u8cc7\u6599\u8868\uff0c\u5c31\u53ea\u597d\u91cd\u65b0Create Table\u4e86<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u76f8\u4fe1\u5927\u90e8\u5206\u7684\u958b\u767c\u4eba\u54e1\u4e00\u5b9a\u90fd\u6703\u78b0\u5230\u8cc7\u6599\u5eabSQL<\/p>\n<p>\u5728\u958b\u767c\u968e\u6bb5\u5e38\u5e38\u8981\u6e2c\u8a66\uff0c\u6211\u5011\u9700\u8981\u522a\u9664\u6574\u500b\u8cc7\u6599\u8868\u5167\u7684\u8cc7\u6599\uff0c<\/p>\n<p>\u6709\u4e09\u7a2e\u65b9\u6cd5\u53ef\u4ee5\u53c3\u8003\u4f7f\u7528\uff0c\u5206\u5225\u662f\u4f7f\u7528Delete\u3001Trancate\u8207Drop\uff0c\u4f7f\u9019\u4e09\u7a2e\u65b9\u5f0f\u7684\u5dee\u7570\u5728\u54ea\u88e1\u5462?<\/p>\n<p>\u4f7f\u7528Delete\u8a9e\u6cd5\uff0c\u4e0d\u52a0\u4efb\u4f55Where\u689d\u4ef6\u4e0b\uff0c\u662f\u53ef\u4ee5\u79fb\u9664\u6574\u500bTable\u7684\u8cc7\u6599\uff0c\u4f46\u662f\u537b\u6703\u8017\u7528\u5927\u91cf\u8cc7\u6e90<\/p>\n","protected":false},"author":1,"featured_media":743,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[145,92],"tags":[98,100,97,99,96],"aioseo_notices":[],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"https:\/\/i0.wp.com\/hsin-life.com\/wp-content\/uploads\/2021\/07\/da18cf6e-a674-4d0c-9357-c02f3a814d02.png?fit=1280%2C675&ssl=1","jetpack-related-posts":[],"_links":{"self":[{"href":"https:\/\/hsin-life.com\/wp-json\/wp\/v2\/posts\/711"}],"collection":[{"href":"https:\/\/hsin-life.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hsin-life.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hsin-life.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/hsin-life.com\/wp-json\/wp\/v2\/comments?post=711"}],"version-history":[{"count":0,"href":"https:\/\/hsin-life.com\/wp-json\/wp\/v2\/posts\/711\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hsin-life.com\/wp-json\/wp\/v2\/media\/743"}],"wp:attachment":[{"href":"https:\/\/hsin-life.com\/wp-json\/wp\/v2\/media?parent=711"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hsin-life.com\/wp-json\/wp\/v2\/categories?post=711"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hsin-life.com\/wp-json\/wp\/v2\/tags?post=711"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}