diff --git a/src/wp-includes/wp-db.php b/src/wp-includes/wp-db.php
index 2f6d4f484c..cbf2abf77f 100644
--- a/src/wp-includes/wp-db.php
+++ b/src/wp-includes/wp-db.php
@@ -2868,11 +2868,8 @@ class wpdb {
 		// Allow (select...) union [...] style queries. Use the first query's table name.
 		$query = ltrim( $query, "\r\n\t (" );
 
-		/*
-		 * Strip everything between parentheses except nested selects and use only 1,000
-		 * chars of the query.
-		 */
-		$query = preg_replace( '/\((?!\s*select)[^(]*?\)/is', '()', substr( $query, 0, 1000 ) );
+		// Strip everything between parentheses except nested selects.
+		$query = preg_replace( '/\((?!\s*select)[^(]*?\)/is', '()', $query );
 
 		// Quickly match most common queries.
 		if ( preg_match( '/^\s*(?:'
diff --git a/tests/phpunit/tests/db.php b/tests/phpunit/tests/db.php
index a8524aa2cb..9a6be9f30b 100644
--- a/tests/phpunit/tests/db.php
+++ b/tests/phpunit/tests/db.php
@@ -533,6 +533,8 @@ class Tests_DB extends WP_UnitTestCase {
 			"SELECT * FROM $table",
 			"SELECT * FROM `$table`",
 
+			"SELECT * FROM (SELECT * FROM $table) as subquery",
+
 			"INSERT $table",
 			"INSERT IGNORE $table",
 			"INSERT IGNORE INTO $table",
@@ -627,6 +629,9 @@ class Tests_DB extends WP_UnitTestCase {
 			"SHOW FULL COLUMNS FROM $table",
 			"SHOW CREATE TABLE $table",
 			"SHOW INDEX FROM $table",
+
+			// @ticket 32763
+			"SELECT " . str_repeat( 'a', 10000 ) . " FROM (SELECT * FROM $table) as subquery",
 		);
 
 		$querycount = count( $queries );