id summary reporter owner description type status priority milestone component version severity resolution keywords cc focuses 18158 Meta Query for posts with a meta key not set (IS NULL). johnnyb georgestephanis "In the meta_query, we should be able to query for posts that don't have a certain meta key at all. I suggest a syntax something like this: {{{ ... meta_query => array( array( 'key' => '_my_special_meta', 'compare' => 'NOT EXISTS' ) ) ... }}} Alternately this could be handled invisibly along the lines of: {{{ ... meta_query => array( array( 'key' => '_my_special_meta', 'value' => 'a_value_this_might_have', 'compare' => '!=' ) ) ... }}} This could be done using a left join, and not some sort of special case like above. Since it's a left join we may have to be careful that we don't end up with a bunch of junk rows in the query, however." enhancement closed normal 3.5 Query 3.2.1 normal fixed has-patch needs-unit-tests commit