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How do I exclude all posts from a specific category in a $wpdb query?

Rose — Sun, 07 Jan 2018 15:40:01 +0000

I’m trying to create a function for my statistics page that will count all published posts in a given year that are NOT assigned to category ID ‘667’. Here is what I have so far:

function my_post_count_function( $year ) {
	global $wpdb;
	return $wpdb->get_var( "SELECT count(ID) FROM $wpdb->posts WHERE $wpdb->posts.post_type IN ('post') AND $wpdb->posts.post_status IN ('publish') AND YEAR($wpdb->posts.post_date) = $year" );
}

The function works, but I need help figuring out how to exclude the category. I believe I need to add a JOIN, but I’ve never joined tables in a query before. I’m unsure of how to begin and haven’t had much success in finding examples.

Reply To: How do I exclude all posts from a specific category in a $wpdb query?

Steven Stern (sterndata) — Sun, 07 Jan 2018 16:08:39 +0000

I’d do it this way

function count_posts() {
$args = array(
  'post_type' => 'post',
  'year'  => '2017',
  'cat' => array(-667),
   'posts_per_page'=>-1,
);

$the_query = new WP_Query( $args );
$count =  $the_query->post_count;

wp_reset_query();
return $count;
}

Edit: added a missing prime before “posts_per_page”

Reply To: How do I exclude all posts from a specific category in a $wpdb query?

Rose — Sun, 07 Jan 2018 21:54:14 +0000

Your method is clearly so much better than mine! Thank you very much.

Reply To: How do I exclude all posts from a specific category in a $wpdb query?

Steven Stern (sterndata) — Sun, 07 Jan 2018 21:56:04 +0000

It worked? Dang! I didn’t test that code. ??