{"id":329,"date":"2021-11-14T19:03:24","date_gmt":"2021-11-14T11:03:24","guid":{"rendered":"http:\/\/www.bderp.net\/?p=329"},"modified":"2022-01-15T20:06:30","modified_gmt":"2022-01-15T12:06:30","slug":"kf01","status":"publish","type":"post","link":"http:\/\/www.bderp.net\/kf\/kf01.html","title":{"rendered":"erp\u7cfb\u7edf\u5f00\u53d1SQL\u547d\u4ee4\u884c\u5de5\u5177kf01"},"content":{"rendered":"<p>\u6253\u5f00\u3010\u7cfb\u7edf\u8bbe\u7f6e\u3011\/\u3010SQL\u547d\u4ee4\u884c\u5de5\u5177\u3011\uff0c\u53ef\u4ee5\u4f7f\u7528\u6b64\u5de5\u5177\u81ea\u52a8\u751f\u6210SQL\u8bed\u53e5\uff0c\u5982\u4e0b\u56fe\u3002\u6700\u540e\u70b9\u5de5\u5177\u680f\u4e0a\u7684\u7eff\u8272\u4e09\u89d2\u5f62\u6309\u94ae<span style=\"color: #339966;\"> \u25ba<\/span> \u53ef\u4ee5\u6267\u884cSQL\u8bed\u53e5\uff0c\u663e\u793a\u6267\u884c\u7ed3\u679c\uff08\u5982\u679cSQL\u8bed\u53e5\u6709\u9519\u5219\u62a5\u9519\uff0c\u6709\u52a9\u4e8e\u8c03\u8bd5SQL\u8bed\u53e5\uff09\u3002SQL\u547d\u4ee4\u884c\u5de5\u5177\u8fd8\u6709\u5176\u4ed6\u529f\u80fd\uff0c\u5982\u4e0b\u56fe\u3002<\/p>\n<p><img loading=\"lazy\" class=\"alignnone wp-image-1660 size-full img-responsive \" title=\"erp\u7cfb\u7edf\u5f00\u53d1-SQL\u5de5\u5177\" src=\"http:\/\/www.bderp.net\/wp-content\/uploads\/2021\/11\/14135560f7bb232cf7bcVPwa6.jpg\" alt=\"erp\u7cfb\u7edf\u5f00\u53d1-SQL\u5de5\u5177\" \/><\/p>\n<p>\u56fe\uff1aSQL\u547d\u4ee4\u884c\u5de5\u5177<\/p>\n<p><img loading=\"lazy\" class=\"alignnone wp-image-1659 size-full img-responsive \" title=\"erp\u7cfb\u7edf\u5f00\u53d1-SQL\u6a21\u677f\" src=\"http:\/\/www.bderp.net\/wp-content\/uploads\/2021\/11\/14140260f7bb2aae5d5kH2Yeh.jpg\" alt=\"erp\u7cfb\u7edf\u5f00\u53d1-SQL\u6a21\u677f\" \/><\/p>\n<p>\u56fe\uff1a\u6839\u636e\u6a21\u677f\u751f\u6210SQL\u8bed\u53e5<\/p>\n<p><img loading=\"lazy\" class=\"alignnone wp-image-1658 size-full img-responsive \" title=\"erp\u7cfb\u7edf\u5f00\u53d1-\u751f\u4ea7SQL\u8bed\u53e5\" src=\"http:\/\/www.bderp.net\/wp-content\/uploads\/2021\/11\/14140960f7bb317d325W6R1nk.jpg\" alt=\"erp\u7cfb\u7edf\u5f00\u53d1-\u751f\u4ea7SQL\u8bed\u53e5\" \/><\/p>\n<p>\u56fe\uff1a\u62d6\u62fd\u8868\u540d\u79f0\u8282\u70b9\u751f\u6210SQL\u8bed\u53e5\u7247\u6bb5<\/p>\n<p>\u63d0\u9192\uff1aSQL\u547d\u4ee4\u884c\u5de5\u5177\u4f1a\u76f4\u63a5\u64cd\u4f5c\u540e\u53f0\u6570\u636e\u5e93\u8868\uff0c\u5982\u679c\u8bef\u64cd\u4f5c\u4f1a\u5bfc\u81f4\u6570\u636e\u4e22\u5931\uff0c\u6700\u597d\u5148\u5728\u6d4b\u8bd5\u8d26\u5957\u6d4b\u8bd5\u597d\u4e4b\u540e\u518d\u5e94\u7528\u5230\u6b63\u5f0f\u8d26\u5957\u4e0a\uff0c\u4ee5\u514d\u8bef\u64cd\u4f5c\u635f\u574f\u5b9e\u9645\u4e1a\u52a1\u6570\u636e\u3002<\/p>\n<hr \/>\n<h3>\u4e00\u4e9b\u6700\u91cd\u8981\u7684 SQL \u547d\u4ee4<\/h3>\n<ul>\n<li>SELECT\u00a0&#8211; \u4ece\u6570\u636e\u5e93\u4e2d\u63d0\u53d6\u6570\u636e<\/li>\n<li>UPDATE\u00a0&#8211; \u66f4\u65b0\u6570\u636e\u5e93\u4e2d\u7684\u6570\u636e<\/li>\n<li>DELETE\u00a0&#8211; \u4ece\u6570\u636e\u5e93\u4e2d\u5220\u9664\u6570\u636e<\/li>\n<li>INSERT INTO\u00a0&#8211; \u5411\u6570\u636e\u5e93\u4e2d\u63d2\u5165\u65b0\u6570\u636e<\/li>\n<\/ul>\n<p>\u6570\u636e\u5e93\u4e3b\u8981\u5305\u62ec\u589e\u3001\u5220\u3001\u6539\u3001\u67e5\u7b49\u57fa\u672c\u64cd\u4f5c\uff0c\u4ee5\u4e0b\u4e3a\u8bbe\u8ba1\u5230\u7684\u5e38\u7528\u7684sql\u8bed\u53e5\uff1a<\/p>\n<p><strong>\u4e00\u3001\u67e5<\/strong><\/p>\n<p><strong>1.select \u8bed\u6cd5\u67e5\u8be2<\/strong><\/p>\n<p><strong>SELECT\u00a0column_name,column_name\u00a0FROM\u00a0table_name<\/strong><\/p>\n<p>\u5176\u4e2dcolumn_name\u4e3a\u6570\u636e\u5e93\u8868\u5217\u540d\u5b57\u6bb5\uff0ctable_name\u4e3a\u8868\u540d\u79f0<\/p>\n<p>\u5982\uff1aselect * from people \u8868\u793a\u67e5\u8be2people\u8868\u5185\u6240\u6709\u5217\uff0c\u8fd4\u56de\u6240\u6709\u8bb0\u5f55\uff0c*\u8868\u793a\u6240\u6709\u5217<\/p>\n<p>\u5982\uff1aselect\u00a0 name,age from people \u8868\u793a\u67e5\u8be2people\u8868\u5185\u540d\u79f0\u4e3aname\u548cage\u7684\u5217<\/p>\n<p><strong>2.select distinct \u8bed\u6cd5\uff0c\u67e5\u8be2\u975e\u91cd\u590d\u9879<\/strong><\/p>\n<p><strong>SELECT DISTINCT\u00a0column_name,column_name\u00a0FROM\u00a0table_name<\/strong><\/p>\n<p>\u6dfb\u52a0\u00a0DISTINCT \u5173\u952e\u5b57\u4f1a\u5bf9\u67e5\u8be2\u7ed3\u679c\u8fdb\u884c\u53bb\u91cd\uff0c\u8fd4\u56de\u552f\u4e00\u7684\u503c\uff0c\u6ce8\u610f\uff1a\u67e5\u8be2\u591a\u4e2a\u5217\u65f6\uff0c\u53ea\u6709\u591a\u4e2a\u5217\u7684\u503c\u5168\u90fd\u76f8\u540c\uff0c\u624d\u8ba4\u4e3a\u662f\u76f8\u540c\u7684\u7ed3\u679c\uff0c\u5426\u5219\u4e0d\u4f1a\u53bb\u91cd<\/p>\n<p><strong>3.where \u8bed\u6cd5<\/strong><\/p>\n<p><strong>SELECT column_name,column_name FROM table_name WHERE column_name operator value<\/strong><\/p>\n<p>\u5982\uff1aselect * from people where name=&#8217;\u5c0f\u660e&#8217; \u8868\u793a\u67e5\u8be2people\u8868\u5185\uff0c\u540d\u4e3a\u201c\u5c0f\u660e\u201d\u7684\u8bb0\u5f55<\/p>\n<p><strong>4.and \u548c or \u8fd0\u7b97\u7b26<\/strong><\/p>\n<p>and \u548c or \u8fd0\u7b97\u7b26\u8fde\u63a5\u591a\u4e2a\u67e5\u8be2\u6761\u4ef6\uff0c\u914d\u5408where\u8bed\u6cd5\u4f7f\u7528<\/p>\n<p>\u5982\uff1aselect * from people where age&gt;20 and country=&#8217;CN&#8217; \u8868\u793a\u67e5\u8be2ipeople \u8868\u5185age\u5b57\u6bb5\u503c\u5927\u4e8e20\u5e76\u4e14country \u5b57\u6bb5\u4e3a\u201cCN\u201d\u7684\u8bb0\u5f55<\/p>\n<p>&nbsp;<\/p>\n<p><strong>\u4e8c\u3001\u589e<\/strong><\/p>\n<p><strong>1.insert into \u8bed\u53e5<\/strong><\/p>\n<p><strong>INSERT INTO table_name VALUES (value1,value2,value3,&#8230;)\uff0c\u6b64\u8bed\u6cd5\u9700\u8981\u628a\u6240\u6709\u5217\u7684\u503c\u5199\u5168\uff0c\u5426\u5219\u4e0d\u6210\u529f<\/strong><\/p>\n<p><strong>INSERT INTO table_name (column1,column2,column3,&#8230;) VALUES (value1,value2,value3,&#8230;)<\/strong><\/p>\n<p>\u5982\uff1ainsert into people (name,age) values (&#8216;\u5f20\u4e09&#8217;\uff0c30)\uff0c\u8868\u793a\u5411people\u8868\u5185\u63d2\u5165\u4e00\u6761\u8bb0\u5f55\uff0cname\u4e3a\u201c\u5f20\u4e09\u201d\uff0cage\u4e3a30<\/p>\n<p>&nbsp;<\/p>\n<p><strong>\u4e09\u3001\u6539<\/strong><\/p>\n<p><strong>1.update \u8bed\u53e5<\/strong><\/p>\n<p><strong>UPDATE table_name SET column1=value1,column2=value2, &#8230; WHERE some_column=some_value<\/strong><\/p>\n<p>\u5982\uff1aupdate people set name=&#8217;\u674e\u56db&#8217;\uff0cage=&#8217;31&#8217; where name=&#8217;\u5f20\u4e09&#8217;\uff0c\u8868\u793a\u5c06people\u8868\u5185name\u7b49\u4e8e\u201c\u5f20\u4e09\u201d\u7684\u8bb0\u5f55\uff0cname\u6539\u4e3a\u201c\u674e\u56db\u201d\uff0cage\u6539\u4e3a31<\/p>\n<p>&nbsp;<\/p>\n<p><strong>\u56db\u3001\u5220<\/strong><\/p>\n<p><strong>1.delete \u8bed\u53e5<\/strong><\/p>\n<p><strong>DELETE FROM table_name WHERE some_column=some_value<\/strong><\/p>\n<p>\u5982\uff1adelete from people where name=&#8217;\u5f20\u4e09&#8217;\uff0c\u8868\u793a\u5220\u9664people\u8868\u5185name\u4e3a\u201c\u5f20\u4e09\u201d\u7684\u8bb0\u5f55<\/p>\n<p>\u4ee5\u4e0a\u4e3a\u6700\u7b80\u5355\u7684sql\u8bed\u6cd5\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6253\u5f00\u3010\u7cfb\u7edf\u8bbe\u7f6e\u3011\/\u3010SQL\u547d\u4ee4\u884c\u5de5\u5177\u3011\uff0c\u53ef\u4ee5\u4f7f\u7528\u6b64\u5de5\u5177\u81ea\u52a8\u751f\u6210SQL\u8bed\u53e5\uff0c\u5982\u4e0b\u56fe\u3002\u6700\u540e\u70b9\u5de5\u5177\u680f\u4e0a\u7684\u7eff\u8272\u4e09\u89d2\u5f62\u6309 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[127],"tags":[139,182,131,132,183],"_links":{"self":[{"href":"http:\/\/www.bderp.net\/wp-json\/wp\/v2\/posts\/329"}],"collection":[{"href":"http:\/\/www.bderp.net\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.bderp.net\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.bderp.net\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.bderp.net\/wp-json\/wp\/v2\/comments?post=329"}],"version-history":[{"count":1,"href":"http:\/\/www.bderp.net\/wp-json\/wp\/v2\/posts\/329\/revisions"}],"predecessor-version":[{"id":6107,"href":"http:\/\/www.bderp.net\/wp-json\/wp\/v2\/posts\/329\/revisions\/6107"}],"wp:attachment":[{"href":"http:\/\/www.bderp.net\/wp-json\/wp\/v2\/media?parent=329"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.bderp.net\/wp-json\/wp\/v2\/categories?post=329"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.bderp.net\/wp-json\/wp\/v2\/tags?post=329"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}