{"id":113,"date":"2019-07-10T10:54:44","date_gmt":"2019-07-10T02:54:44","guid":{"rendered":"http:\/\/www.cgh0610.cn\/?p=113"},"modified":"2019-07-10T10:56:18","modified_gmt":"2019-07-10T02:56:18","slug":"mysql-%e5%9c%a8update%e4%b8%ad%e5%ae%9e%e7%8e%b0%e5%ad%90%e6%9f%a5%e8%af%a2","status":"publish","type":"post","link":"https:\/\/www.cgh0610.cn\/?p=113","title":{"rendered":"MySql \u5728update\u4e2d\u5b9e\u73b0\u5b50\u67e5\u8be2"},"content":{"rendered":"<p>MySql\u66f4\u65b0\u8bed\u53e5\u4e2d\uff0c\u7ecf\u5e38\u4f1a\u78b0\u5230\u9700\u8981\u4f7f\u7528\u5b50\u67e5\u8be2\u9650\u5b9a\u66f4\u65b0\u8303\u56f4\u7684\u60c5\u51b5\uff0c\u4f46\u662fmysql\u66f4\u65b0\u8bed\u53e5\u662f\u4e0d\u652f\u6301\u5b50\u67e5\u8be2\u7684<\/p>\n<pre><code class=\"line-numbers\">#\u4f8b\u5982\u8fd9\u6837\u5f53\u4f7f\u7528mysql\u6761\u4ef6\u66f4\u65b0\u65f6--\u6700\u5148\u8ba9\u4eba\u60f3\u5230\u7684\u5199\u6cd5  \nUPDATE user SET isagent=1 WHERE uid IN (SELECT uid FROM user_agent) \n\n#\u6b64\u8bed\u53e5\u662f\u9519\u8bef\u7684\uff0c\u4f1a\u62a5\u9519 You can't specify target table 'xxx' for update in FROM\n<\/code><\/pre>\n<p>\u8fd9\u662f\u56e0\u4e3a\uff1a<\/p>\n<p>mysql\u7684update\u7684\u4e00\u4e9b\u7279\u70b9<\/p>\n<p>1\u3001update \u65f6\uff0c\u66f4\u65b0\u7684\u8868\u4e0d\u80fd\u5728set\u548cwhere\u4e2d\u7528\u4e8e\u5b50\u67e5\u8be2\uff1b<\/p>\n<p>2\u3001update \u65f6\uff0c\u53ef\u4ee5\u5bf9\u591a\u4e2a\u8868\u8fdb\u884c\u66f4\u65b0\uff08sqlserver\u4e0d\u884c\uff09\uff1b<\/p>\n<pre><code>     \u5982\uff1aupdate ta a,tb b set a.Bid=b.id ,b.Aid=a.id;  \n<\/code><\/pre>\n<p>3\u3001update \u540e\u9762\u53ef\u4ee5\u505a\u4efb\u610f\u7684\u67e5\u8be2\uff0c\u8fd9\u4e2a\u4f5c\u7528\u7b49\u540c\u4e8efrom\uff1b<\/p>\n<p>\u6b63\u786e\u7684\u65b9\u5f0f\u662f\uff0c\u4f8b\uff1a<\/p>\n<pre><code class=\"line-numbers\">#\u7b80\u5355\u7684\u66f4\u65b0\u8bed\u53e5\nUPDATE `user` u SET u.`status`=1 WHERE u.`isagent`='1'\n\n#\u590d\u6742\u7684\u66f4\u65b0\u8bed\u53e5\n\u4f8b\u5b501\nupdate member m,(SELECT * FROM FansRole) r set m.agentlevel=(case r.FanskindID when 1 then 0 else r.FanskindID+2 end),m.`level`=r.FanskindID,m.isagent=1,m.`status`=1,m.agenttime=UNIX_TIMESTAMP(r.RegTime) where m.id=r.UserID\n\u4f8b\u5b502\nUPDATE order_mall a,(SELECT order_mall.id FROM `order_mall`,`order_goods` WHERE order_mall.`id`=order_goods.`order_id` AND order_goods.order_status=8 AND order_goods.order_goods_type=3) b \nSET a.`status`=4\nWHERE a.id=b.id\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>MySql\u66f4\u65b0\u8bed\u53e5\u4e2d\uff0c\u7ecf\u5e38\u4f1a\u78b0\u5230\u9700\u8981\u4f7f\u7528\u5b50\u67e5\u8be2\u9650\u5b9a\u66f4\u65b0\u8303\u56f4\u7684\u60c5\u51b5\uff0c\u4f46\u662fmysql\u66f4\u65b0\u8bed\u53e5\u662f\u4e0d\u652f\u6301\u5b50\u67e5\u8be2\u7684 #\u4f8b &hellip; <a href=\"https:\/\/www.cgh0610.cn\/?p=113\" class=\"more-link\">\u7ee7\u7eed\u9605\u8bfb<span class=\"screen-reader-text\">MySql \u5728update\u4e2d\u5b9e\u73b0\u5b50\u67e5\u8be2<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"aside","meta":[],"categories":[39,12],"tags":[28,49,50],"_links":{"self":[{"href":"https:\/\/www.cgh0610.cn\/index.php?rest_route=\/wp\/v2\/posts\/113"}],"collection":[{"href":"https:\/\/www.cgh0610.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.cgh0610.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.cgh0610.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.cgh0610.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=113"}],"version-history":[{"count":3,"href":"https:\/\/www.cgh0610.cn\/index.php?rest_route=\/wp\/v2\/posts\/113\/revisions"}],"predecessor-version":[{"id":116,"href":"https:\/\/www.cgh0610.cn\/index.php?rest_route=\/wp\/v2\/posts\/113\/revisions\/116"}],"wp:attachment":[{"href":"https:\/\/www.cgh0610.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=113"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.cgh0610.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=113"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.cgh0610.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=113"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}