CreateQuery test_tz_hour (children 3)
 Identifier test_tz_hour
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration t (children 1)
    DataType DateTime
   ColumnDeclaration x (children 1)
    DataType String
 Storage definition (children 3)
  Function MergeTree
  Function toYYYYMMDD (children 1)
   ExpressionList (children 1)
    Identifier t
  Identifier x
