LEFT JOIN doesn't working

Question

I have 2 taxonomies: city and street .

I need to get postmeta for one of my plugins.

Working code for only one taxonomy:

SELECT *
FROM $wpdb->postmeta
LEFT JOIN $wpdb->posts ON($wpdb->posts.ID = $wpdb->postmeta.post_id)
LEFT JOIN $wpdb->term_relationships ON ($wpdb->postmeta.post_id = $wpdb->term_relationships.object_id)
LEFT JOIN $wpdb->term_taxonomy ON ($wpdb->term_relationships.term_taxonomy_id = $wpdb->term_taxonomy.term_taxonomy_id)
WHERE meta_key LIKE 'rwp_rating%'
  AND ($wpdb->term_taxonomy.taxonomy = 'city'
       AND $wpdb->term_taxonomy.term_id = '2')

but if I append

AND ($wpdb->term_taxonomy.taxonomy = 'street' AND $wpdb->term_taxonomy.term_id = '5')

it returns empty result.

Also I tried to do that:

SELECT *
FROM $wpdb->postmeta
LEFT JOIN $wpdb->posts ON ($wpdb->posts.ID = $wpdb->postmeta.post_id)
LEFT JOIN $wpdb->term_relationships ON ($wpdb->postmeta.post_id = $wpdb->term_relationships.object_id)
LEFT JOIN $wpdb->term_taxonomy AS t1 ON ($wpdb->term_relationships.term_taxonomy_id = t1.term_taxonomy_id)
LEFT JOIN $wpdb->term_taxonomy AS t2 ON ($wpdb->term_relationships.term_taxonomy_id = t2.term_taxonomy_id)
WHERE meta_key LIKE 'rwp_rating%'
  AND (t1.taxonomy = 'city'
       AND t1.term_id = '2')
  AND (t2.taxonomy = 'street'
       AND t2.term_id = '3331');

And it doesn't working too.

Please Note: I need to match both, like: city = 2 AND street = 2
not: city = 2 OR street = 2

Answer 1

Your first attempt will not work because a single taxonomy record can not have both street and city in it.

Update your second attempt to this :

SELECT * FROM $wpdb->postmeta 
LEFT JOIN $wpdb->posts ON ($wpdb->posts.ID = $wpdb->postmeta.post_id) 
LEFT JOIN $wpdb->term_relationships ON ($wpdb->postmeta.post_id = $wpdb->term_relationships.object_id) 
LEFT JOIN $wpdb->term_taxonomy as t1 ON ($wpdb->term_relationships.term_taxonomy_id = t1.term_taxonomy_id AND t1.taxonomy = 'city') 
LEFT JOIN $wpdb->term_taxonomy as t2 ON ($wpdb->term_relationships.term_taxonomy_id = t2.term_taxonomy_id AND t2.taxonomy = 'street') 
WHERE meta_key LIKE 'rwp_rating%' AND t1.term_id = '2' AND t2.term_id = '3331');