CreateQuery t1 (children 3)
 Identifier t1
 Columns definition (children 1)
  ExpressionList (children 3)
   ColumnDeclaration d (children 1)
    DataType Datetime
   ColumnDeclaration c0 (children 3)
    DataType Int
    Set
    Function plus (children 1)
     ExpressionList (children 2)
      Identifier d
      Function toIntervalMonth (children 1)
       ExpressionList (children 1)
        Literal UInt64_1
   ColumnDeclaration c2 (children 3)
    DataType Int
    Set
    Function STATISTICS (children 1)
     ExpressionList (children 1)
      Function Uniq
 Storage definition (children 2)
  Function MergeTree (children 1)
   ExpressionList
  Function tuple (children 1)
   ExpressionList
