WP_Meta_Query::get_sql_for_clause()
Method: Generates SQL JOIN and WHERE clauses for a first-order query clause.
Source: wp-includes/class-wp-meta-query.php:533
WP_Meta_Query::get_clauses()
Method: Gets a flattened list of sanitized meta clauses.
Source: wp-includes/class-wp-meta-query.php:806
get_object_subtype()
Function: Returns the object subtype for a given object ID of a specific type.
Source: wp-includes/meta.php:1743
get_object_subtype_{$object_type}
Filter Hook: Filters the object subtype identifier for a non-standard object type.
Source: wp-includes/meta.php:1802
get_registered_meta_keys()
Function: Retrieves a list of registered metadata args for an object type, keyed by their meta keys.
Source: wp-includes/meta.php:1657
get_registered_metadata()
Function: Retrieves registered metadata for a specified object.
Source: wp-includes/meta.php:1683
get_meta_sql()
Function: Given a meta query, generates SQL clauses to be appended to a main query.
Source: wp-includes/meta.php:1245
_get_meta_table()
Function: Retrieves the name of the metadata table for the specified object type.
Source: wp-includes/meta.php:1261
is_protected_meta()
Function: Determines whether a meta key is considered protected.
Source: wp-includes/meta.php:1283
is_protected_meta
Filter Hook: Filters whether a meta key is considered protected.
Source: wp-includes/meta.php:1297