{"id":7433,"date":"2023-11-28T19:02:08","date_gmt":"2023-11-28T11:02:08","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=7433"},"modified":"2023-11-28T19:02:13","modified_gmt":"2023-11-28T11:02:13","slug":"mysql-de-shu-ju-ku-de-le-guan-suo-he-bei-guan-suo","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/11\/28\/mysql-de-shu-ju-ku-de-le-guan-suo-he-bei-guan-suo\/","title":{"rendered":"MySQL\u7684\u6570\u636e\u5e93\u7684\u4e50\u89c2\u9501\u548c\u60b2\u89c2\u9501\u662f\u4ec0\u4e48\uff1f\u600e\u4e48\u5b9e\u73b0\u7684\uff1f"},"content":{"rendered":"<p>\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\uff08DBMS\uff09\u4e2d\u7684\u5e76\u53d1\u63a7\u5236\u7684\u4efb\u52a1\u662f\u786e\u4fdd\u5728\u591a\u4e2a\u4e8b\u52a1\u540c\u65f6\u5b58\u53d6\u6570\u636e\u5e93\u4e2d\u540c\u4e00\u6570\u636e\u65f6\u4e0d\u7834\u574f\u4e8b\u52a1\u7684\u9694\u79bb\u6027\u548c\u7edf\u4e00\u6027\u4ee5\u53ca\u6570\u636e\u5e93\u7684\u7edf\u4e00\u6027\u3002\u4e50\u89c2\u5e76\u53d1\u63a7\u5236\uff08\u4e50\u89c2\u9501\uff09\u548c\u60b2\u89c2\u5e76\u53d1\u63a7\u5236\uff08\u60b2\u89c2\u9501\uff09\u662f\u5e76\u53d1\u63a7\u5236\u4e3b\u8981\u91c7\u7528\u7684\u6280\u672f\u624b\u6bb5\u3002<br \/>\n\u60b2\u89c2\u9501\uff1a<br \/>\n\u5047\u5b9a\u4f1a\u53d1\u751f\u5e76\u53d1\u51b2\u7a81\uff0c\u5c4f\u853d\u4e00\u5207\u53ef\u80fd\u8fdd\u53cd\u6570\u636e\u5b8c\u6574\u6027\u7684\u64cd\u4f5c\u3002\u5728\u67e5\u8be2\u5b8c\u6570\u636e\u7684\u65f6\u5019\u5c31\u628a\u4e8b\u52a1\u9501\u8d77\u6765\uff0c\u76f4\u5230\u63d0\u4ea4\u4e8b\u52a1\u3002\u5b9e\u73b0\u65b9\u5f0f\uff1a\u4f7f\u7528\u6570\u636e\u5e93\u4e2d\u7684\u9501\u673a\u5236<br \/>\n\/\/\u6838\u5fc3SQL,\u4e3b\u8981\u9760for update<br \/>\nselect status from t_goods where id=l for update\uff1b<br \/>\n\u4e50\u89c2\u9501\uff1a<br \/>\n\u5047\u8bbe\u4e0d\u4f1a\u53d1\u751f\u5e76\u53d1\u51b2\u7a81\uff0c\u53ea\u5728\u63d0\u4ea4\u64cd\u4f5c\u65f6\u68c0\u67e5\u662f\u5426\u8fdd\u53cd\u6570\u636e\u5b8c\u6574\u6027\u3002\u5728\u4fee\u6539\u6570\u636e\u7684\u65f6\u5019\u628a\u4e8b\u52a1\u9501\u8d77\u6765\uff0c\u901a\u8fc7version\u7684\u65b9\u5f0f\u6765\u8fdb\u884c\u9501\u5b9a\u3002\u5b9e\u73b0\u65b9\u5f0f\uff1a\u4e00\u822c\u4f1a\u4f7f\u7528\u7248\u672c\u53f7\u673a\u5236\u6216CAS\u7b97\u6cd5\u5b9e\u73b0\u3002<br \/>\n\/\/\u6838\u5fc3SQL<br \/>\nupdate table set x=x+l, version=version+l where {id} and version=#{version}\uff1b<br \/>\n\u4e24\u79cd\u9501\u7684\u4f7f\u7528\u573a\u666f<br \/>\n\u4ece\u4e0a\u9762\u5bf9\u4e24\u79cd\u9501\u7684\u4ecb\u7ecd\uff0c\u6211\u4eec\u77e5\u9053\u4e24\u79cd\u9501\u5404\u6709\u4f18\u7f3a\u70b9\uff0c\u4e0d\u53ef\u8ba4\u4e3a\u4e00\u79cd\u597d\u4e8e\u53e6\u4e00\u79cd\uff0c\u50cf\u4e50\u89c2\u9501\u9002\u7528\u4e8e\u5199\u6bd4\u8f83\u5c11\u7684\u60c5\u51b5\u4e0b\uff08\u591a\u8bfb\u573a\u666f\uff09\uff0c\u5373\u51b2\u7a81\u771f\u7684\u5f88\u5c11\u53d1\u751f\u7684\u65f6\u5019\uff0c\u8fd9\u6837\u53ef\u4ee5\u7701\u53bb\u4e86\u9501\u7684\u5f00\u9500\uff0c\u52a0\u5927\u4e86\u7cfb\u7edf\u7684\u6574\u4e2a\u541e\u5410\u91cf\u3002<br \/>\n\u4f46\u5982\u679c\u662f\u591a\u5199\u7684\u60c5\u51b5\uff0c\u4e00\u822c\u4f1a\u7ecf\u5e38\u4ea7\u751f\u51b2\u7a81\uff0c\u8fd9\u5c31\u4f1a\u5bfc\u81f4\u4e0a\u5c42\u5e94\u7528\u4f1a\u4e0d\u65ad\u7684\u8fdb\u884cretry,\u8fd9\u6837\u53cd\u5012\u662f\u964d\u4f4e\u4e86\u6027\u80fd\uff0c\u6240\u4ee5\u4e00\u822c\u591a\u5199\u7684\u573a\u666f\u4e0b\u7528\u60b2\u89c2\u9501\u5c31\u6bd4\u8f83\u5408\u9002\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\uff08DBMS\uff09\u4e2d\u7684\u5e76\u53d1\u63a7\u5236\u7684\u4efb\u52a1\u662f\u786e\u4fdd\u5728\u591a\u4e2a\u4e8b\u52a1\u540c\u65f6\u5b58\u53d6\u6570\u636e\u5e93\u4e2d\u540c\u4e00\u6570\u636e\u65f6\u4e0d\u7834\u574f\u4e8b\u52a1\u7684\u9694\u79bb\u6027\u548c\u7edf\u4e00 [&hellip;]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[102],"tags":[],"class_list":["post-7433","post","type-post","status-publish","format-standard","hentry","category-db"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/7433","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/comments?post=7433"}],"version-history":[{"count":1,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/7433\/revisions"}],"predecessor-version":[{"id":7434,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/7433\/revisions\/7434"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=7433"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=7433"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=7433"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}