I was able to query two custom post types by using this line:
AND wposts.post_type IN ('custom_post_type_1', 'custom_post_type_2')
This worked for my situation, where each custom post type was being sorted by the same meta_key
I was able to query two custom post types by using this line:
AND wposts.post_type IN ('custom_post_type_1', 'custom_post_type_2')
This worked for my situation, where each custom post type was being sorted by the same meta_key