WordPress-Datenbank-Fehler: [The SELECT would examine more than MAX_JOIN_SIZE rows; check your WHERE and use SET SQL_BIG_SELECTS=1 or SET MAX_JOIN_SIZE=# if the SELECT is okay]
SELECT SQL_CALC_FOUND_ROWS XYUUf_posts.ID
FROM XYUUf_posts INNER JOIN XYUUf_postmeta ON ( XYUUf_posts.ID = XYUUf_postmeta.post_id )
WHERE 1=1 AND (
NOT EXISTS (
SELECT 1
FROM XYUUf_term_relationships
INNER JOIN XYUUf_term_taxonomy
ON XYUUf_term_taxonomy.term_taxonomy_id = XYUUf_term_relationships.term_taxonomy_id
WHERE XYUUf_term_taxonomy.taxonomy = 'objecttype'
AND XYUUf_term_relationships.object_id = XYUUf_posts.ID
)
AND
NOT EXISTS (
SELECT 1
FROM XYUUf_term_relationships
INNER JOIN XYUUf_term_taxonomy
ON XYUUf_term_taxonomy.term_taxonomy_id = XYUUf_term_relationships.term_taxonomy_id
WHERE XYUUf_term_taxonomy.taxonomy = 'city'
AND XYUUf_term_relationships.object_id = XYUUf_posts.ID
)
AND
NOT EXISTS (
SELECT 1
FROM XYUUf_term_relationships
INNER JOIN XYUUf_term_taxonomy
ON XYUUf_term_taxonomy.term_taxonomy_id = XYUUf_term_relationships.term_taxonomy_id
WHERE XYUUf_term_taxonomy.taxonomy = 'district'
AND XYUUf_term_relationships.object_id = XYUUf_posts.ID
)
) AND (
( XYUUf_postmeta.meta_key = 'rental' AND XYUUf_postmeta.meta_value = '1' )
OR
( XYUUf_postmeta.meta_key = 'rental' AND XYUUf_postmeta.meta_value IN ('1') )
) AND XYUUf_posts.post_type = 'page' AND ((XYUUf_posts.post_status = 'publish'))
GROUP BY XYUUf_posts.ID
ORDER BY XYUUf_posts.post_date DESC
LIMIT 0, 1