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perf(2meet-data-optimizer): keep WordPress's split query on routed searches

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- posts_request only drops SQL_CALC_FOUND_ROWS, but WordPress then treated the request as filtered and selected full post rows through a temporary table; split_the_query now keeps the ID-first split for routed searches when nothing else changed the request, and posts_request_ids drops SQL_CALC_FOUND_ROWS from the split ID query
- Verify: tests/live/run.php router (12/12, IDs-first request, found_posts == native); dev36 fe.sh price 589→340 ms, price__asc 961→427 ms, rating__desc 1724→872 ms, hourly_rate__desc 855→884 ms (was 1206)
- PR: PR-062b
This commit is contained in:
wpdev
2026-09-26 20:14:29 +08:00
parent ec75721976
commit aa2da274dd
4 changed files with 131 additions and 7 deletions
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includes/query/class-tmdo-post-query-router.php
+38 -1
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@@ -92,6 +92,8 @@ class TMDO_Post_Query_Router {
add_filter( 'posts_where', array( $this, 'posts_where' ), 10, 2 );
add_filter( 'posts_orderby', array( $this, 'posts_orderby' ), 10, 2 );
add_filter( 'posts_request', array( $this, 'posts_request' ), 10, 2 );
add_filter( 'split_the_query', array( $this, 'split_the_query' ), 10, 4 );
add_filter( 'posts_request_ids', array( $this, 'posts_request' ), 10, 2 );
add_filter( 'found_posts_query', array( $this, 'found_posts_query' ), 10, 2 );
}
@@ -338,12 +340,37 @@ class TMDO_Post_Query_Router {
if ( ! $routed || false === strpos( $request, 'SQL_CALC_FOUND_ROWS' ) ) {
return $request;
}
$request = preg_replace( '/\bSQL_CALC_FOUND_ROWS\s+/', '', $request, 1 );
$request = self::without_found_rows( $request );
$matches = preg_replace( '/\s+LIMIT\s+\d+(\s*,\s*\d+)?\s*$/i', '', $request );
$query->set( self::COUNT_VAR, "SELECT COUNT(*) FROM ( {$matches} ) AS tmdo_found" );
return $request;
}
/**
* Keep WordPress's split query (IDs first, then cached post objects) on a
* routed search: posts_request only dropped SQL_CALC_FOUND_ROWS, yet
* WordPress takes any change for a filtered request and selects full rows
* (a temporary table sorting whole posts). The split ID request passes
* through posts_request_ids, which drops SQL_CALC_FOUND_ROWS again.
*
* @param bool $split Core decision.
* @param \WP_Query $query Current WP_Query.
* @param string $old_request Request before posts_request.
* @param array<string, string> $clauses Query clauses (fields, limits …).
* @return bool
*/
public function split_the_query( $split, \WP_Query $query, $old_request = '', $clauses = array() ): bool {
$routed = ! empty( $query->get( self::QUERY_VAR ) ) || ! empty( $query->get( self::SORT_VAR ) );
if ( $split || ! $routed ) {
return (bool) $split;
}
global $wpdb;
// Core's other conditions: full rows, and a LIMIT under 500 or an external object cache.
return "{$wpdb->posts}.*" === ( $clauses['fields'] ?? '' )
&& self::without_found_rows( (string) $old_request ) === $query->request
&& ( ( '' !== ( $clauses['limits'] ?? '' ) && (int) $query->get( 'posts_per_page' ) < 500 ) || wp_using_ext_object_cache() );
}
/**
* Answer found rows from the cached COUNT of a routed search.
*
@@ -542,6 +569,16 @@ class TMDO_Post_Query_Router {
);
}
/**
* A request without its SQL_CALC_FOUND_ROWS.
*
* @param string $request SELECT statement.
* @return string
*/
private static function without_found_rows( string $request ): string {
return (string) preg_replace( '/\bSQL_CALC_FOUND_ROWS\s+/', '', $request, 1 );
}
/**
* Whether a meta query type casts to a number (NUMERIC, SIGNED, DECIMAL(p,s) …).
*