Well, this is some puzzle. What I'm trying to do is basically just use an "AND" at the end of this query, but my gut is telling me that I've got to redesign the JOINS for this to work.

What I have is some content and taxonomy spread out across 3 tables.

It goes like this (only relevant cols included):

wp_posts
[id (wp_term_relationships.object_id)] [post_content]

wp_term_relationships
[object_id (wp_posts.id)] [term_taxonomy_id (wp_terms.term_id)]

wp_terms
[term_id (wp_term_relationships.term_taxonomy_id)] [slug]

The relationships are in parentheses.

I have a few rows of content in wp_posts that are part of two categories, one being a parent and one being a child. So listed under wp_term_relationships, I have:

wp_term_relationships
[object_id] [term_taxonomy_id]
130............8
130............12
128............8
128............11

When I run my original query, it's based off of the slug name of one category, which traced through the join retrieves term_taxonomy_id "8" and returns both id 130 and 128 in wp_posts.

What I'd like to do is check for 2 slug names (the parent and the child), and only return ID's that have both slug names, so basically, find the id that is part of both category "8" and category "12", and only return the 130.

My current query is this:

SELECT wp_posts.post_content FROM wp_terms INNER JOIN wp_term_relationships ON wp_term_relationships.term_taxonomy_id = wp_terms.term_id INNER JOIN wp_posts ON wp_posts.ID=wp_term_relationships.object_id WHERE wp_terms.slug = 'homeblocks'

What I want to end up with, basically is just adding " AND wp_terms.slug='1x2'" at the end, like this:

SELECT wp_posts.post_content FROM wp_terms INNER JOIN wp_term_relationships ON wp_term_relationships.term_taxonomy_id = wp_terms.term_id INNER JOIN wp_posts ON wp_posts.ID=wp_term_relationships.object_id WHERE wp_terms.slug = 'homeblocks' AND wp_terms.slug='1x2'

but I know that won't work, and I've tried it.

I'm thinking I've got to wrap some joins inside each other, like:

SELECT wp_posts.post_content FROM wp_terms INNER JOIN (wp_term_relationships ON wp_term_relationships.term_taxonomy_id = wp_terms.term_id INNER JOIN wp_posts ON wp_posts.ID=wp_term_relationships.object_id WHERE wp_terms.slug = 'homeblocks') INNER JOIN (wp_term_relationships ON wp_term_relationships.term_taxonomy_id = wp_terms.term_id AND INNER JOIN wp_posts ON wp_posts.ID=wp_term_relationships.object_id WHERE wp_terms.slug = '1x2')

I'd appreciate any guidance, big-time.