Wordpress query with AND returns data as OR
I need to build WP_Query that will return data from database where both conditions are fulfilled, because of that I'm using AND as relation but returned data are different than I expected. To make it more clear I will post WP_Query arguments here.
[post_type] => Array
 => event
[post_status] => publish
[paged] => 1
[posts_per_page] => 1000
[tax_query] => Array
[relation] => AND
 => Array
[taxonomy] => event_dates
[field] => slug
[terms] => Array
 => thursday
 => exhibitions
With this arguments I thought that I'll get events with type exibition AND are on Thursday.
Thanks in advance for help.
AND is on the wrong level. The WP_Query arguments should look like something like this:
'tax_query' => array(
'taxonomy' => 'event_dates',
'field' => 'slug',
'terms' => array('thursday', 'exhibitions'),
'operator' => 'AND'
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