{"id":7319,"date":"2023-11-28T18:33:09","date_gmt":"2023-11-28T10:33:09","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=7319"},"modified":"2023-11-28T18:33:35","modified_gmt":"2023-11-28T10:33:35","slug":"mysql-zhong-qian-zhui-suo-yin-le-jie-ma","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/11\/28\/mysql-zhong-qian-zhui-suo-yin-le-jie-ma\/","title":{"rendered":"MySQL\u4e2d\u524d\u7f00\u7d22\u5f15\u4e86\u89e3\u5417\uff1f"},"content":{"rendered":"<p>1\u3001  \u8bed\u6cd5\uff1aindex(field(10)),\u4f7f\u7528\u5b57\u6bb5\u503c\u7684\u524d10\u4e2a\u5b57\u7b26\u5efa\u7acb\u7d22\u5f15\uff0c\u9ed8\u8ba4\u662f\u4f7f\u7528\u5b57\u6bb5\u7684\u5168\u90e8\u5185\u5bb9\u5efa\u7acb\u7d22\u5f15\u3002<br \/>\n2\u3001  \u524d\u63d0\uff1a\u524d\u7f00\u7684\u6807\u8bc6\u5ea6\u9ad8\u3002\u6bd4\u5982\u5bc6\u7801\u5c31\u9002\u5408\u5efa\u7acb\u524d\u7f00\u7d22\u5f15\uff0c\u56e0\u4e3a\u5bc6\u7801\u51e0\u4e4e\u5404\u4e0d\u76f8\u540c\u3002<br \/>\n3\u3001  \u5b9e\u64cd\u7684\u96be\u5ea6\uff1a\u5728\u4e8e\u524d\u7f00\u622a\u53d6\u7684\u957f\u5ea6\u3002<br \/>\n4\u3001  \u6211\u4eec\u53ef\u4ee5\u5229\u7528 select count(*)\/count(distinct left(password, prefixLen));\u901a\u8fc7\u4ece\u8c03prefixLen\u7684\u503c(\u4ece1\u81ea\u589e)\u67e5\u770b\u4e0d\u540c\u524d\u7f00\u957f\u5ea6\u7684\u4e00\u4e2a\u5e73\u5747\u5339\u914d\u5ea6\uff0c\u63a5\u8fd11\u65f6\u5c31\u53ef\u4ee5\u4e86(\u8868\u793a\u4e00\u4e2a\u5bc6\u7801\u7684\u524dprefixLen\u4e2a\u5b57\u7b26\u51e0\u4e4e\u80fd\u786e\u5b9a\u552f\u4e00\u4e00\u6761\u8bb0\u5f55)<\/p>\n","protected":false},"excerpt":{"rendered":"<p>1\u3001 \u8bed\u6cd5\uff1aindex(field(10)),\u4f7f\u7528\u5b57\u6bb5\u503c\u7684\u524d10\u4e2a\u5b57\u7b26\u5efa\u7acb\u7d22\u5f15\uff0c\u9ed8\u8ba4\u662f\u4f7f\u7528\u5b57\u6bb5\u7684\u5168\u90e8\u5185\u5bb9\u5efa\u7acb\u7d22 [&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-7319","post","type-post","status-publish","format-standard","hentry","category-db"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/7319","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=7319"}],"version-history":[{"count":2,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/7319\/revisions"}],"predecessor-version":[{"id":7322,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/7319\/revisions\/7322"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=7319"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=7319"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=7319"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}