CreateQuery t (children 4)
 Identifier t
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration a (children 1)
    DataType DateTime
   ColumnDeclaration b (children 1)
    DataType FixedString (children 1)
     ExpressionList (children 1)
      Literal UInt64_6
 Storage definition (children 3)
  Function MergeTree
  Function toStartOfDay (children 1)
   ExpressionList (children 1)
    Identifier a
  Function tuple (children 1)
   ExpressionList (children 2)
    Identifier a
    Identifier b
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectQuery (children 2)
    ExpressionList (children 1)
     Asterisk
    TablesInSelectQuery (children 1)
     TablesInSelectQueryElement (children 1)
      TableExpression (children 1)
       Function values (children 1)
        ExpressionList (children 2)
         Literal Tuple_(\'2023-01-01 00:00:00\', \'fd4c03\')
         Literal Tuple_(\'2023-01-01 00:00:00\', \'123456\')
