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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
| Line | Code |
|---|---|
| 1557 | * Filter the table alias identified as compatible with the current clause. |
| 1558 | * |
| 1559 | * @since 4.1.0 |
| 1560 | * |
| 1561 | * @param string|bool $alias Table alias, or false if none was found. |
| 1562 | * @param array $clause First-order query clause. |
| 1563 | * @param array $parent_query Parent of $clause. |
| 1564 | * @param object $this WP_Meta_Query object. |
| 1565 | */ |
| 1566 | return apply_filters( 'meta_query_find_compatible_table_alias', $alias, $clause, $parent_query, $this ) ; |
| 1567 | } |
| 1568 | } |
| 1569 | |
| 1570 | /** |
| 1571 | * Retrieve the name of the metadata table for the specified object type. |
| 1572 | * |
| 1573 | * @since 2.9.0 |
| 1574 | * |
| 1575 | * @global wpdb $wpdb WordPress database abstraction object. |