{"id":1214,"date":"2016-02-04T21:06:56","date_gmt":"2016-02-04T13:06:56","guid":{"rendered":"https:\/\/actom.me\/blog\/?p=1214"},"modified":"2016-02-05T19:34:11","modified_gmt":"2016-02-05T11:34:11","slug":"mysql-update-%e4%bd%bf%e7%94%a8%e5%ad%90%e6%9f%a5%e8%af%a2%e6%9b%b4%e6%96%b0%e5%90%8c%e4%b8%80%e5%bc%a0%e8%a1%a8","status":"publish","type":"post","link":"https:\/\/actom.me\/blog\/mysql-update-%e4%bd%bf%e7%94%a8%e5%ad%90%e6%9f%a5%e8%af%a2%e6%9b%b4%e6%96%b0%e5%90%8c%e4%b8%80%e5%bc%a0%e8%a1%a8.html","title":{"rendered":"MySQL Update \u4f7f\u7528\u5b50\u67e5\u8be2\u66f4\u65b0\u540c\u4e00\u5f20\u8868"},"content":{"rendered":"<p>\u6709\u4e00\u5f20\u5206\u7c7b\u8868\uff0c4\u4e2a\u5b57\u6bb5\uff0cid,name,parent_id,child_num\uff0c\u5176\u4e2dparent_id\u662f\u8be5\u5206\u7c7b\u7684\u7236\u5206\u7c7bid\uff0c\u73b0\u5728\u9700\u8981\u66f4\u65b0\u6240\u6709\u5206\u7c7b\u7684child_num\uff0c\u5373\u5b50\u5206\u7c7b\u4e2a\u6570\u3002<\/p>\n<pre class=\"lang:mysql decode:true \">UPDATE category AS b SET child_num = ( SELECT count( * ) FROM ( SELECT * FROM category ) AS x WHERE x.parent_id = b.id )<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u6709\u4e00\u5f20\u5206\u7c7b\u8868\uff0c4\u4e2a\u5b57\u6bb5\uff0cid,name,parent_id,child_num\uff0c &#8230; <a class=\"more-link\" href=\"https:\/\/actom.me\/blog\/mysql-update-%e4%bd%bf%e7%94%a8%e5%ad%90%e6%9f%a5%e8%af%a2%e6%9b%b4%e6%96%b0%e5%90%8c%e4%b8%80%e5%bc%a0%e8%a1%a8.html\">Read More &raquo;<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"_links":{"self":[{"href":"https:\/\/actom.me\/blog\/wp-json\/wp\/v2\/posts\/1214"}],"collection":[{"href":"https:\/\/actom.me\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/actom.me\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/actom.me\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/actom.me\/blog\/wp-json\/wp\/v2\/comments?post=1214"}],"version-history":[{"count":1,"href":"https:\/\/actom.me\/blog\/wp-json\/wp\/v2\/posts\/1214\/revisions"}],"predecessor-version":[{"id":1217,"href":"https:\/\/actom.me\/blog\/wp-json\/wp\/v2\/posts\/1214\/revisions\/1217"}],"wp:attachment":[{"href":"https:\/\/actom.me\/blog\/wp-json\/wp\/v2\/media?parent=1214"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/actom.me\/blog\/wp-json\/wp\/v2\/categories?post=1214"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/actom.me\/blog\/wp-json\/wp\/v2\/tags?post=1214"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}