Hi,

I’m trying to write a complex sql query in MySQL, but I couldn’t manage to write it. I have 3 tables; categories, posts and comments.

Code:
CREATE TABLE `categories` (
  `id` SMALLINT(6) UNSIGNED NOT NULL AUTO_INCREMENT,
  `title` VARCHAR(30) COLLATE utf8_general_ci NOT NULL DEFAULT '',
  `created` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
  `status` TINYINT(4) UNSIGNED NOT NULL DEFAULT '0',
  PRIMARY KEY (`id`)
)ENGINE=MyISAM
AUTO_INCREMENT=1 CHARACTER SET 'utf8' COLLATE 'utf8_general_ci';

CREATE TABLE `posts` (
  `id` SMALLINT(6) UNSIGNED NOT NULL AUTO_INCREMENT,
  `category_id` SMALLINT(6) UNSIGNED NOT NULL DEFAULT '0',
  `title` VARCHAR(150) COLLATE utf8_general_ci NOT NULL DEFAULT '',
  `content` TINYTEXT NOT NULL,
  `created` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
  `status` TINYINT(4) UNSIGNED NOT NULL DEFAULT '0',
  PRIMARY KEY (`id`)
)ENGINE=MyISAM
AUTO_INCREMENT=1 CHARACTER SET 'utf8' COLLATE 'utf8_general_ci';

CREATE TABLE `comments` (
  `id` MEDIUMINT(9) UNSIGNED NOT NULL AUTO_INCREMENT,
  `post_id` SMALLINT(6) UNSIGNED NOT NULL DEFAULT '0',
  `member_id` MEDIUMINT(9) UNSIGNED NOT NULL DEFAULT '0',
  `comment` TEXT COLLATE utf8_general_ci NOT NULL,
  `ip` INTEGER(11) NOT NULL DEFAULT '0',
  `created` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
  `status` TINYINT(4) UNSIGNED NOT NULL DEFAULT '0',
  PRIMARY KEY (`id`)
)ENGINE=InnoDB
AUTO_INCREMENT=1 CHARACTER SET 'utf8' COLLATE 'utf8_general_ci';
I want to join these 3 tables and get a result something like that;

Code:
category.id | category.title | post.id | post.title | post.content | comment_count
----------------------------------------------------------------------------------
1             Category 1       1         Post 1       Post content   5
1             Category 1       2         Post 2       Post content   3
2             Category 2       3         Post 3       Post content   0
3             Category 3       4         Post 4       Post content   1
It’s important for me to get "posts.status = 1 AND comments.status = 1". I want to see the records that posts.status = 1 AND comments.status = 1. If there are no comments or comments were not approved (which is comments.status = 0), "comment_count" row will be shown as 0 (zero).

How can I write such a query?

Thanks.