{"id":306,"date":"2011-11-28T17:36:17","date_gmt":"2011-11-28T09:36:17","guid":{"rendered":"http:\/\/www.woria.cn\/blogs\/?p=306"},"modified":"2011-11-28T17:36:17","modified_gmt":"2011-11-28T09:36:17","slug":"mysql-primary-cardinality-auto_increment","status":"publish","type":"post","link":"https:\/\/blogs.woria.cn\/?p=306","title":{"rendered":"\u67e5\u8be2Mysql\u6570\u636e\u5e93\u81ea\u52a8\u589e\u957f\u7684\u57fa\u6570"},"content":{"rendered":"<p>\u4eca\u5929\u5728\u505a\u4e1c\u897f\u65f6\u5019 \u9047\u5230\u4e00\u4e2a\u95ee\u9898\uff1a\u201c\u5982\u4f55\u5f97\u5230mysql\u6570\u636e\u8868\u4e2d\u81ea\u52a8\u589e\u957f\u5b57\u6bb5\u7684\u7d22\u5f15\u57fa\u6570\u3002\u201d<br \/>\n\u8d39\u5c3d\u5468\u6298 \u7ec8\u4e8e\u5f97\u5230\u65b9\u6cd5\u4e86\uff1a<\/p>\n<pre>\n$query = $this->db->query('SHOW INDEX from tree;');\n\/\/\u67e5\u8be2\u8bed\u53e5\u662f show index from tree\u3002 \n\/\/\u8bf7\u6ce8\u610f\uff0c\u6211\u8fd9\u91cc\u4f7f\u7528ci\u7684\u6570\u636e\u5e93\u7c7b\u5e93\u3002\u81ea\u5df1\u6d4b\u8bd5\u7684\u8bf7\u81ea\u884c\u5199\u597d\u67e5\u8be2\u8bed\u53e5\u3002\n$row = $query->row(); \nprint_r($row);\/\/\u6253\u5370\u7ed3\u679c\n<\/pre>\n<p><!--more--><br \/>\n\u8fd9\u6837\u6211\u4f1a\u5f97\u5230<\/p>\n<pre>\nstdClass Object\n(\n    [Table] => tree  \/\/\u8868\u540d\n    [Non_unique] => 0\n    [Key_name] => PRIMARY\n    [Seq_in_index] => 1\n    [Column_name] => tid\n    [Collation] => A\n    [Cardinality] => 6 \/\/\u7d22\u5f15\u57fa\u65706\uff0c\u8981\u5f97\u5c31\u662f\u5b83\uff01\n    [Sub_part] => \n    [Packed] => \n    [Null] => \n    [Index_type] => BTREE\n    [Comment] => \n)\n<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u4eca\u5929\u5728\u505a\u4e1c\u897f\u65f6\u5019 \u9047\u5230\u4e00\u4e2a\u95ee\u9898\uff1a\u201c\u5982\u4f55\u5f97\u5230mysql\u6570\u636e\u8868\u4e2d\u81ea\u52a8\u589e\u957f\u5b57\u6bb5\u7684\u7d22\u5f15\u57fa\u6570\u3002\u201d \u8d39\u5c3d\u5468\u6298 \u7ec8\u4e8e\u5f97\u5230\u65b9\u6cd5&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2,10,5],"tags":[],"class_list":["post-306","post","type-post","status-publish","format-standard","hentry","category-technique","category-ued","category-magician"],"_links":{"self":[{"href":"https:\/\/blogs.woria.cn\/index.php?rest_route=\/wp\/v2\/posts\/306","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.woria.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blogs.woria.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.woria.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.woria.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=306"}],"version-history":[{"count":0,"href":"https:\/\/blogs.woria.cn\/index.php?rest_route=\/wp\/v2\/posts\/306\/revisions"}],"wp:attachment":[{"href":"https:\/\/blogs.woria.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=306"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.woria.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=306"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.woria.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=306"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}