QueryBuilderExecuteToExecuteQueryOrExecuteStatementRector

Replace QueryBuilder::execute() with executeQuery() or executeStatement() based on the query type

 $queryBuilder
     ->select('u.id')
     ->from('user', 'u')
-    ->execute();
+    ->executeQuery();

Configure your rector.php:

<?php

use Rector\Config\RectorConfig;
use Rector\Doctrine\Dbal31\Rector\MethodCall\QueryBuilderExecuteToExecuteQueryOrExecuteStatementRector;

return RectorConfig::configure()
    ->withRules([
        QueryBuilderExecuteToExecuteQueryOrExecuteStatementRector::class,
    ]);
SETS:  doctrine/dbal
PACKAGE:  doctrine/dbal >=3.1