Database: Find the correct table names in DELETE queries with table aliases

Previously, `wpdb::get_table_from_query()` would not find the correct table name in the query `DELETE a FROM table a`, due to not recognising the table alias immediately after the `DELETE` as correct syntax.

Fixes #37660.



git-svn-id: https://develop.svn.wordpress.org/trunk@38507 602fd350-edb4-49c9-b593-d223f7449a82

tests/phpunit/tests/db.php

@@ -562,6 +562,8 @@ class Tests_DB extends WP_UnitTestCase {
 			"DELETE QUICK $table",
 			"DELETE IGNORE $table",
 			"DELETE LOW_PRIORITY FROM $table",
+			"DELETE a FROM $table a",
+			"DELETE `a` FROM $table a",
 
 			// STATUS
 			"SHOW TABLE STATUS LIKE '$table'",