{"id":446,"date":"2012-09-11T08:55:25","date_gmt":"2012-09-11T08:55:25","guid":{"rendered":"http:\/\/ahsiu.com\/?p=446"},"modified":"2012-09-11T08:55:25","modified_gmt":"2012-09-11T08:55:25","slug":"sql%ef%bc%8cmysql%e6%8f%92%e5%85%a5%e6%95%b0%e6%8d%ae%e6%97%b6%e8%8e%b7%e5%8f%96%e8%87%aa%e5%8a%a8%e5%a2%9e%e9%95%bf%e5%88%97%e7%9a%84id","status":"publish","type":"post","link":"https:\/\/blog.xiunian.wang\/?p=446","title":{"rendered":"sql\uff0cmysql\u63d2\u5165\u6570\u636e\u65f6\u83b7\u53d6\u81ea\u52a8\u589e\u957f\u5217\u7684ID"},"content":{"rendered":"<p><span style=\"font-size: medium;\">1\u3001Mysql<br \/>\n<\/span><\/p>\n<p>\u5728MySQL\u4e2d\uff0c\u4f7f\u7528auto_increment\u7c7b\u578b\u7684id\u5b57\u6bb5\u4f5c\u4e3a\u8868\u7684\u4e3b\u952e\u3002\u901a\u5e38\u7684\u505a\u6cd5\uff0c\u662f\u901a\u8fc7\u201cselect max(id) from tablename\u201d\u7684\u505a\u6cd5\uff0c\u4f46\u662f\u663e\u7136\u8fd9\u79cd\u505a\u6cd5\u9700\u8981\u8003\u8651\u5e76\u53d1\u7684\u60c5\u51b5\uff0c\u9700\u8981\u5728\u4e8b\u52a1\u4e2d\u5bf9\u4e3b\u8868\u52a0\u4ee5\u201cX\u9501\u201c\uff0c\u5f85\u83b7\u5f97max(id)\u7684\u503c\u4ee5\u540e\uff0c\u518d\u89e3\u9501\u3002\u8fd9\u79cd\u505a\u6cd5\u9700 \u8981\u7684\u6b65\u9aa4\u6bd4\u8f83\u591a\uff0c\u6709\u4e9b\u9ebb\u70e6\uff0c\u800c\u4e14\u5e76\u53d1\u6027\u4e5f\u4e0d\u597d\u3002\u6709\u6ca1\u6709\u66f4\u7b80\u5355\u7684\u505a\u6cd5\u5462\uff1f\u7b54\u6848\u4e4b\u4e00\u662f\u901a\u8fc7select LAST_INSERT_ID()\u8fd9\u4e2a\u64cd\u4f5c\u3002\u4e4d\u4e00\u770b\uff0c\u5b83\u548cselect max(id)\u5f88\u8c61\uff0c\u4f46\u5b9e\u9645\u4e0a\u5b83\u662f\u7ebf\u7a0b\u5b89\u5168\u7684\u3002\u4e5f\u5c31\u662f\u8bf4\u5b83\u662f\u5177\u4f53\u4e8e\u6570\u636e\u5e93\u8fde\u63a5\u7684\u3002\u4e0b\u9762\u901a\u8fc7\u5b9e\u9a8c\u8bf4\u660e\uff1a<\/p>\n<p>(1)\u3001\u5728\u8fde\u63a51\u4e2d\u5411A\u8868\u63d2\u5165\u4e00\u6761\u8bb0\u5f55\uff0cA\u8868\u5305\u542b\u4e00\u4e2aauto_increment\u7c7b\u578b\u7684\u5b57\u6bb5\u3002<\/p>\n<p>(2)\u3001\u5728\u8fde\u63a52\u4e2d\u5411A\u8868\u518d\u63d2\u5165\u4e00\u6761\u8bb0\u5f55\u3002<\/p>\n<p>(3)\u3001\u7ed3\u679c\uff1a\u5728\u8fde\u63a51\u4e2d\u6267\u884cselect LAST_INSERT_ID()\u5f97\u5230\u7684\u7ed3\u679c\u548c\u8fde\u63a52\u4e2d\u6267\u884cselect LAST_INSERT_ID()\u7684\u7ed3\u679c\u662f\u4e0d\u540c\u7684\uff1b\u800c\u5728\u4e24\u4e2a\u8fde\u63a5\u4e2d\u6267\u884cselect max(id)\u7684\u7ed3\u679c\u662f\u76f8\u540c\u7684\u3002<br \/>\n\u5176\u5b9e\u5728MSSQL\u4e2dSCOPE_IDENTITY()\u548cIDENT_CURRENT()\u7684\u533a\u522b\u548c\u8fd9\u91cc\u662f\u7c7b\u4f3c\u7684\u3002\u4f7f\u7528SCOPE_IDENTITY()\u53ef\u4ee5 \u83b7\u5f97\u63d2\u5165\u67d0\u4e2aIDENTITY\u5b57\u6bb5\u7684\u5f53\u524d\u4f1a\u8bdd\u7684\u503c\uff0c\u800c\u4f7f\u7528IDENT_CURRENT()\u4f1a\u83b7\u5f97\u5728\u67d0\u4e2aIDENTITY\u5b57\u6bb5\u4e0a\u63d2\u5165\u7684\u6700\u5927\u503c\uff0c\u800c\u4e0d\u533a\u5206\u4e0d\u540c \u7684\u4f1a\u8bdd\u3002<\/p>\n<p>\u6ce8\uff1a\u4f7f\u7528select last_insert_id()\u65f6\u8981\u6ce8\u610f\uff0c\u5f53\u4e00\u6b21\u63d2\u5165\u591a\u6761\u8bb0\u5f55\u65f6\uff0c\u53ea\u662f\u83b7\u5f97\u7b2c\u4e00\u6b21\u63d2\u5165\u7684id\u503c\uff0c\u52a1\u5fc5\u6ce8\u610f\uff01\u53ef\u4ee5\u8bd5\u8bd5<\/p>\n<p><span style=\"font-size: medium;\">2\u3001sql<\/span><br \/>\n<span style=\"font-size: x-small;\">insert into book( Name,ISBN,Info)values(&#8220;sdaf&#8221;,&#8221;12345321236&#8243;,&#8221;asfadsfasfasdf&#8221;)<\/span>:select @@IDENTITY;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>1\u3001Mysql \u5728MySQL\u4e2d\uff0c\u4f7f\u7528auto_increment\u7c7b\u578b\u7684id\u5b57\u6bb5\u4f5c\u4e3a\u8868\u7684\u4e3b\u952e\u3002\u901a\u5e38\u7684\u505a\u6cd5\uff0c\u662f\u901a\u8fc7\u201cselect max(id) from tablename\u201d\u7684\u505a\u6cd5\uff0c\u4f46\u662f\u663e\u7136\u8fd9\u79cd\u505a\u6cd5\u9700\u8981\u8003\u8651\u5e76\u53d1\u7684\u60c5\u51b5\uff0c\u9700\u8981\u5728\u4e8b\u52a1\u4e2d\u5bf9\u4e3b\u8868\u52a0\u4ee5\u201cX\u9501\u201c\uff0c\u5f85\u83b7\u5f97max(id)\u7684\u503c\u4ee5\u540e\uff0c\u518d\u89e3\u9501\u3002\u8fd9\u79cd\u505a\u6cd5\u9700 \u8981\u7684\u6b65\u9aa4\u6bd4\u8f83\u591a\uff0c\u6709\u4e9b\u9ebb\u70e6\uff0c\u800c\u4e14\u5e76\u53d1\u6027\u4e5f\u4e0d\u597d\u3002\u6709\u6ca1\u6709\u66f4\u7b80\u5355\u7684\u505a\u6cd5\u5462\uff1f\u7b54\u6848\u4e4b\u4e00\u662f\u901a\u8fc7select LAST_INSERT_ID()\u8fd9\u4e2a\u64cd\u4f5c\u3002\u4e4d\u4e00\u770b\uff0c\u5b83\u548cselect max(id)\u5f88\u8c61\uff0c\u4f46\u5b9e\u9645\u4e0a\u5b83\u662f\u7ebf\u7a0b\u5b89\u5168\u7684\u3002\u4e5f\u5c31\u662f\u8bf4\u5b83\u662f\u5177\u4f53\u4e8e\u6570\u636e\u5e93\u8fde\u63a5\u7684\u3002\u4e0b\u9762\u901a\u8fc7\u5b9e\u9a8c\u8bf4\u660e\uff1a (1)\u3001\u5728\u8fde\u63a51\u4e2d\u5411A\u8868\u63d2\u5165\u4e00\u6761\u8bb0\u5f55\uff0cA\u8868\u5305\u542b\u4e00\u4e2aauto_increment\u7c7b\u578b\u7684\u5b57\u6bb5\u3002 (2)\u3001\u5728\u8fde\u63a52\u4e2d\u5411A\u8868\u518d\u63d2\u5165\u4e00\u6761\u8bb0\u5f55\u3002 (3)\u3001\u7ed3\u679c\uff1a\u5728\u8fde\u63a51\u4e2d\u6267\u884cselect LAST_INSERT_ID()\u5f97\u5230\u7684\u7ed3\u679c\u548c\u8fde\u63a52\u4e2d\u6267\u884cselect LAST_INSERT_ID()\u7684\u7ed3\u679c\u662f\u4e0d\u540c\u7684\uff1b\u800c\u5728\u4e24\u4e2a\u8fde\u63a5\u4e2d\u6267\u884cselect max(id)\u7684\u7ed3\u679c\u662f\u76f8\u540c\u7684\u3002 \u5176\u5b9e\u5728MSSQL\u4e2dSCOPE_IDENTITY()\u548cIDENT_CURRENT()\u7684\u533a\u522b\u548c\u8fd9\u91cc\u662f\u7c7b\u4f3c\u7684\u3002\u4f7f\u7528SCOPE_IDENTITY()\u53ef\u4ee5 \u83b7\u5f97\u63d2\u5165\u67d0\u4e2aIDENTITY\u5b57\u6bb5\u7684\u5f53\u524d\u4f1a\u8bdd\u7684\u503c\uff0c\u800c\u4f7f\u7528IDENT_CURRENT()\u4f1a\u83b7\u5f97\u5728\u67d0\u4e2aIDENTITY\u5b57\u6bb5\u4e0a\u63d2\u5165\u7684\u6700\u5927\u503c\uff0c\u800c\u4e0d\u533a\u5206\u4e0d\u540c \u7684\u4f1a\u8bdd\u3002 \u6ce8\uff1a\u4f7f\u7528select last_insert_id()\u65f6\u8981\u6ce8\u610f\uff0c\u5f53\u4e00\u6b21\u63d2\u5165\u591a\u6761\u8bb0\u5f55\u65f6\uff0c\u53ea\u662f\u83b7\u5f97\u7b2c\u4e00\u6b21\u63d2\u5165\u7684id\u503c\uff0c\u52a1\u5fc5\u6ce8\u610f\uff01\u53ef\u4ee5\u8bd5\u8bd5 2\u3001sql insert into book( Name,ISBN,Info)values(&#8220;sdaf&#8221;,&#8221;12345321236&#8243;,&#8221;asfadsfasfasdf&#8221;):select @@IDENTITY;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"_links":{"self":[{"href":"https:\/\/blog.xiunian.wang\/index.php?rest_route=\/wp\/v2\/posts\/446"}],"collection":[{"href":"https:\/\/blog.xiunian.wang\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.xiunian.wang\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.xiunian.wang\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.xiunian.wang\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=446"}],"version-history":[{"count":0,"href":"https:\/\/blog.xiunian.wang\/index.php?rest_route=\/wp\/v2\/posts\/446\/revisions"}],"wp:attachment":[{"href":"https:\/\/blog.xiunian.wang\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=446"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.xiunian.wang\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=446"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.xiunian.wang\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=446"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}