SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Function groupArray (children 1)
     ExpressionList (children 1)
      Identifier dt
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier date_datetime_key_condition
   Function and (children 1)
    ExpressionList (children 2)
     Function greaterOrEquals (children 1)
      ExpressionList (children 2)
       Identifier dt
       Function toDate (children 1)
        ExpressionList (children 1)
         Literal \'2019-01-02\'
     Function less (children 1)
      ExpressionList (children 2)
       Identifier dt
       Function toDate (children 1)
        ExpressionList (children 1)
         Literal \'2021-01-02\'
