CreateQuery select_final (children 3)
 Identifier select_final
 Columns definition (children 1)
  ExpressionList (children 3)
   ColumnDeclaration t (children 1)
    DataType DateTime
   ColumnDeclaration x (children 1)
    DataType Int32
   ColumnDeclaration string (children 1)
    DataType String
 Storage definition (children 4)
  Function ReplacingMergeTree (children 1)
   ExpressionList
  Function toYYYYMM (children 1)
   ExpressionList (children 1)
    Identifier t
  Function tuple (children 1)
   ExpressionList (children 2)
    Identifier x
    Identifier t
  Set
