Re: SQL Join query
| From: | Jonathan Haddad | Date: | Mon, 09 Aug 2004 16:02:06 +0000 |
| Subject: | Re: SQL Join query | ||
| References: | 1 2 | Groups: | php.general |
| Request: | Send a blank email to php-general+get-193210@lists.php.net to get a copy of this message | ||
The only problem there is when you group the LEFT JOIN pictures that have a count of 0 return a count of 1. Unfortunately there's no single query that I figured out when I did this same project that would give accurate results.
John Holmes wrote:
Mattias Jönsson wrote:SELECT pics.*, pic_comments.*, count(*) AS num_comments FROM pics, pic_comments WHERE pics.category = 1 AND pics.id = pic_comments.pic_id GROUP BY pic_comments.pic_id;[snip]The problem is that i only get the the pictures that have comments, i want even the pictures where there arent no comments and the field num_comments should be 0.Need a LEFT JOIN SELECT pics.*, pic_comments.*, count(*) AS num_comments FROM pics LEFT JOIN pic_comments on pics.id = pic_comments.pic_id WHERE pics.category = 1 GROUP BY pic_comments.pic_id