CreateQuery long (children 3)
 Identifier long
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration e (children 1)
    DataType Int64
   ColumnDeclaration t (children 1)
    DataType DateTime
 Storage definition (children 3)
  Function MergeTree
  Function tuple (children 1)
   ExpressionList (children 2)
    Identifier e
    Function toStartOfMonth (children 1)
     ExpressionList (children 1)
      Identifier t
  Identifier t
