I think doing a COUNT(*) FROM  SYS_TABLES is the best way to check for an 
existing table. With that being said and you truly want to delete/drop a 
TEMPORARY table then recreate it I would just turn the error message off and 
drop the table then turn the error message back on. 

 

  SET ERROR MESSAGE 2038 OFF

    DROP myTempTblName

 SET ERR0R MESSAGE 2038 ON

  CREATE TEMPORARY myTempTblName ………

 

Buddy

 

 

From: [email protected] <[email protected]> On Behalf Of Lena 
Dammstrom
Sent: Tuesday, May 1, 2018 11:41 AM
To: [email protected]
Subject: RE: [RBASE-L] - Does Table exist?

 

Doug, I be interested in a more elegant way of checking for the existence of a 
table too!

 

I use the count method:

SET VAR vCount = 0

SELECT COUNT(*) INTO vCount FROM Sys_Tables +

  WHERE Sys_Table_Name = 'TableName' AND LIMIT = 1

 

 

Regards 

Lena 

From: [email protected] <mailto:[email protected]>  
<[email protected] <mailto:[email protected]> > On Behalf Of Doug 
Hamilton
Sent: Tuesday, May 01, 2018 10:33 AM
To: R:Base List <[email protected] <mailto:[email protected]> >
Subject: [RBASE-L] - Does Table exist?

 

I'm drawing a blank - is there a command/function (in 9.5) to check for the 
existence of a table?
I want to see if a temp table exists before I try to recreate it.

I could try to count rows and check for error messages if the table isn't there 
but I suspect there's a more elegant method.
'Course, recreating an existing table would also give an error message...

TIA,
Doug
Now to get more coffee....

 


 
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