ParallelWithQuery 2 CreateQuery_table1 (children 2)
 CreateQuery table1 (children 3)
  Identifier table1
  Columns definition (children 1)
   ExpressionList (children 1)
    ColumnDeclaration x (children 1)
     DataType Int32
  Storage definition (children 2)
   Function MergeTree
   Identifier x
 CreateQuery table2 (children 3)
  Identifier table2
  Columns definition (children 1)
   ExpressionList (children 1)
    ColumnDeclaration y (children 1)
     DataType Int32
  Storage definition (children 2)
   Function MergeTree
   Identifier y
