Filters all query clauses at once, for convenience.

Covers the WHERE, GROUP BY, JOIN, ORDER BY, DISTINCT, fields (SELECT), and LIMIT clauses.

$clauses string[]

Associative array of the clauses for the query.

• wherestring
  The WHERE clause of the query.
• groupbystring
  The GROUP BY clause of the query.
• joinstring
  The JOIN clause of the query.
• orderbystring
  The ORDER BY clause of the query.
• distinctstring
  The DISTINCT clause of the query.
• fieldsstring
  The SELECT clause of the query.
• limitsstring
  The LIMIT clause of the query.

$query WP_Query

The WP_Query instance (passed by reference).

The posts_clauses filter runs before the query gets executed and is essentially the sum of all filters that run immediately before it. So it should be used if you don’t intend to let another plugin override it, or if you need to alter several different parts of the query at once. If you’re only modifying a particular clause, you should probably use one of these clause-specific filters:

* posts_where_paged
* posts_groupby
* posts_join_paged
* posts_orderby
* posts_distinct
* post_limits
* posts_fields

Note: If you’re working on a caching plugin, use the posts_clauses_request filter instead. It’s basically the same filter, but it runs later (and after posts_selection), specifically so that “regular” plugins can execute their filters before your caching plugin does anything.

File: wp-includes/class-wp-query.php. View all references

$clauses = (array) apply_filters_ref_array( 'posts_clauses', array( compact( $pieces ), &$this ) );