fix sqlsrv dbauth bug

src/Tqdev/PhpCrudApi/Middleware/DbAuthMiddleware.php

@@ -63,6 +63,7 @@ class DbAuthMiddleware extends Middleware
                 $columnNames = array_map('trim', explode(',', $returnedColumns));
                 $columnNames[] = $passwordColumnName;
                 $columnNames[] = $pkName;
+                $columnNames = array_values(array_unique($columnNames));
             }
             $columnOrdering = $this->ordering->getDefaultColumnOrdering($table);
             if ($path == 'register') {