RE:[sap-dev] Field-symbols question
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 | Posted by horacio zapettini on May 13 at 4:26 PM |  Mark as helpful |
Wes,
a hashed table would perform such changes really faster.
The only difference you have, is that the table must have a unique key.
But you'll gain in performance.
Anyway, if you're talking about 13 mins.... I'd like to know more about the table structure, and the loop. If You'd post them, maybe we could help you better. (otherwise, the profesional network of toolbox is a good place to talk, you're invited to join it)
HTH
Horacio
---------------Original Message---------------
From: sapwes
Sent: Thursday, May 13, 2010 9:27 AM
Subject: Field-symbols question
> The SAP performance guide indicates that using the assigning command when looping on an internal table improves performance.
> eg LOOP AT ITAB ASSIGNING <WA>
> <WA>-FLAG = 'X'.
> ENDLOOP.
> I have seen this to be true.
> I'm working with a devloper who insists on derefencing the field symbol and using the dereferenced varible
> eg
> LOOP AT ITAB ASSIGNING <WA>
> DerefVal = <WA>
> DerefVal-Flag = 'X'.
> ENDLOOP.
> Other than style issues do you folks have any thoughts how it will affect performance? or any other general thoughts about whether this is a good idea or not?
> Thanks
> Wes
__.____._ a hashed table would perform such changes really faster.
The only difference you have, is that the table must have a unique key.
But you'll gain in performance.
Anyway, if you're talking about 13 mins.... I'd like to know more about the table structure, and the loop. If You'd post them, maybe we could help you better. (otherwise, the profesional network of toolbox is a good place to talk, you're invited to join it)
HTH
Horacio
---------------Original Message---------------
From: sapwes
Sent: Thursday, May 13, 2010 9:27 AM
Subject: Field-symbols question
> The SAP performance guide indicates that using the assigning command when looping on an internal table improves performance.
> eg LOOP AT ITAB ASSIGNING <WA>
> <WA>-FLAG = 'X'.
> ENDLOOP.
> I have seen this to be true.
> I'm working with a devloper who insists on derefencing the field symbol and using the dereferenced varible
> eg
> LOOP AT ITAB ASSIGNING <WA>
> DerefVal = <WA>
> DerefVal-Flag = 'X'.
> ENDLOOP.
> Other than style issues do you folks have any thoughts how it will affect performance? or any other general thoughts about whether this is a good idea or not?
> Thanks
> Wes
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horacio zapettiniSAP Development Helper
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