CreateQuery e (children 3)
 Identifier e
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration dt (children 1)
    DataType DateTime
   ColumnDeclaration t (children 1)
    DataType Int32
 Storage definition (children 3)
  Function MergeTree (children 1)
   ExpressionList
  Function tuple (children 1)
   ExpressionList (children 2)
    Identifier t
    Function toYYYYMM (children 1)
     ExpressionList (children 1)
      Identifier dt
  Function tuple (children 1)
   ExpressionList
