RE: what to put in place of null

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: lhoska_at_calibresys.com [mailto:lhoska_at_calibresys.com]
> 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: Harvinder.Singh_at_MetraTech.com
>
> Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051
> San Diego, California -- Public Internet access / Mailing Lists
> --------------------------------------------------------------------
> To REMOVE yourself from this mailing list, send an E-Mail message
> to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in
> the message BODY, include a line containing: UNSUB ORACLE-L
> (or the name of mailing list you want to be removed from). You may
> also send the HELP command for other information (like subscribing).
> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.com
> --
> Author:
> INET: lhoska_at_calibresys.com
>
> Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051
> San Diego, California -- Public Internet access / Mailing Lists
> --------------------------------------------------------------------
> To REMOVE yourself from this mailing list, send an E-Mail message
> to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in
> the message BODY, include a line containing: UNSUB ORACLE-L
> (or the name of mailing list you want to be removed from). You may
> also send the HELP command for other information (like subscribing).
>

-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.com
-- 
Author: 
  INET: Yosi_at_comhill.com

Fat City Network Services    -- (858) 538-5051  FAX: (858) 538-5051
San Diego, California        -- Public Internet access / Mailing Lists
--------------------------------------------------------------------
To REMOVE yourself from this mailing list, send an E-Mail message
to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in
the message BODY, include a line containing: UNSUB ORACLE-L
(or the name of mailing list you want to be removed from).  You may
also send the HELP command for other information (like subscribing).