Fixed field INT type on create table

Author: iamwildtuna

src/Platforms/CockroachPlatform.php

@@ -57,8 +57,19 @@ protected function initializeDoctrineTypeMappings()
         $this->doctrineTypeMapping = array_merge($this->doctrineTypeMapping, [
             '_text' => 'string',
             '_int8' => 'integer',
-            'int8' => 'integer',
             'int2vector' => 'array',
         ]);
     }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getIntegerTypeDeclarationSQL(array $column)
+    {
+        if (! empty($column['autoincrement'])) {
+            return 'SERIAL';
+        }
+
+        return 'INT4';
+    }
 }