Performence issue ( Nested loop )

[Former Member]

Hi all ,

I have 2 Itables with similar structure( f1,f2,f3,f4 ).

i want to compare the field (f4) of two itables if (f1 ,f2, f3 ) is equal. if (f4) is not same then i should move this to itable c.

Example : itab1

A B C X

c c d X

itab2

A B C Y

A B C Z

c c d X

Finally i have to display it as A B C X

A B C Y

A B C X

A B C Z

__________

I did like this.

***loop at itab1 .

• loop at itab2 into w_itab

**********where f1 = itab1-f1

****************f2 = itab1-f2

****************f3 = itab1-f3.

********append w_itab to itab3 .

*******endloop. (itab2)

******if sy-subrc eq 0 .

*********loop at itab3 .

************if itab1-f4 NE itab3-f4 .

***************Error-f1 = itab1-f1 .

***************Error-p1 = itab3-f1 .

***************.

***************append Error.

***************endif.

********endloop.(itab3)

• endif.

**endloop. (itab1)

********

i got the performence issue here . can anybody suggest alternate solution for this.

Thanks.

[FredericGirod]

Press buton "code" to retrieve the structure of the code.

and don't ask two times the same question

thanks

[andreas_mann3]

Hi,

use sorted table for itab2

data: itab2 type sorted table of ty_1 with non-unique key f1 f2 f3.

A.

Message was edited by: Andreas Mann

[Former Member]

Read this:

/people/rob.burbank/blog/2006/02/07/performance-of-nested-loops

Rob