SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function timeSlots (children 1)
     ExpressionList (children 3)
      Function toDateTime (children 1)
       ExpressionList (children 2)
        Literal \'2000-01-02 03:04:05\'
        Literal \'UTC\'
      Function toUInt32 (children 1)
       ExpressionList (children 1)
        Literal UInt64_600
      Literal UInt64_0