Don't think so. Use:
...
union
select '', '', dd2, dd3
/
The empty string is equivalent to null for inserts and updates.
hth,
Yosi
> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
> Sent: Tuesday, June 05, 2001 6:14 PM
> To: Multiple recipients of list ORACLE-L
> Subject: RE: what to put in place of null
>
>
> Try applying data conversion function to_char/to_date or nvl
> function if dd
> and dd1 are numbers to the nulls in the second select.
> Example:
>
> cursor c1 is
> select dd,dd1,dd2,dd3 from dd
> union
> select to_char(null),to_char(null),dd2,dd3
> from dd1;
>
> The point here is you need to have as many columns in your
> second select
> statement as your first select has and the datatypes have to match.
>
> -----Original Message-----
> Sent: Tuesday, June 05, 2001 5:31 PM
> To: Multiple recipients of list ORACLE-L
>
>
> Hi,
>
> I have a cursor declared as
> cursor c1 is
> select dd,dd1,dd2,dd3 from dd
> union
> select null,null,dd2,dd3 from dd1;
>
> i am getting error:
> *
> ERROR at line 1:
> ORA-01790: expression must have same datatype as
> corresponding expression
> ORA-06512: at "DY.REST", line 4
> ORA-06512: at "DY.REST", line 10
> ORA-06512: at line 1
>
> what to replace null with......
> dd1 has only 2 columns dd2 and dd3.....
>
> Thanks
> Harvinder
> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.com
> --
> Author: Harvinder Singh
> INET: [EMAIL PROTECTED]
>
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