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\ d柱需要一个SQL查询来寻找文章大部分被评论数评论顺序/计数DESC
Table "public.posts"
Column | Type | Modifiers
-------------+------------------------+----------------------------------------------------
id | integer | not null default nextval('posts_id_seq'::regclass)
title | character varying(100) | not null
content | character varying(500) | not null
created_at | date |
updated_at | date |
tags | character varying(55) | not null default '50'::character varying
category_id | integer | not null default 1
Indexes:
"posts_pkey" PRIMARY KEY, btree (id)
\ d评论
Table "public.comments"
Column | Type | Modifiers
------------+------------------------+-------------------------------------------------------
id | integer | not null default nextval('comments_id_seq'::regclass)
post_id | integer | not null
name | character varying(255) | not null
email | character varying(255) | not null
content | character varying(500) | not null
created_at | date |
updated_at | date |
Indexes:
"comments_pkey" PRIMARY KEY, btree (id)
我需要一个SQL查询来找到最帖子评论说。我该怎么做?
我删除无效的`[公用]`标识,使这个有效的SQL。 – 2011-12-14 19:55:40