loop in loop performance

Former Member — Thu, 20 Dec 2012 14:35:50 GMT

I have to make loop inside a loop ı am looking fastest way to do

my internal tables likes these (not exactly but similiar)

data begin of itabex

matnr like mara-matnr

lgort like mspr-lgort

charg like mspr-charg

data end of itabex

data begin of itabin

matnr like mara-matnr

lgort like mspr-lgort

charg like mspr-charg

data end of itabin

loop at itabex

loop at itabin where matnr eq itabex-matnr

and lgort eq itabex-lgort

endloop

endloop.

sort itabin by matnr lgort.

loop at itabex.

read table itabin with key matnr = itabex-matnr

lgort = itabex-lgort binary search.

if sy-subrc eq 0.

lv_tabix = sy-tabix.

loop at itabin from lv_tabix.

if itabin-matnr ne itabex-matnr or

itabin-lgort ne itabex-lgort.

exit.

endif.

endloop

endif.

endloop

or much more better way to do

Moderator message: duplicate post.

Message was edited by: Thomas Zloch

Re: loop in loop performance

Former Member — Thu, 20 Dec 2012 16:08:46 GMT

Hi Oldun,

In the second example you are doing double work, once reading (search in table itabex) and then loop (new search in the same table), so it's better the first solution you gave with only one loop.

On the other hand if in the table itabex you are looking for only one register you could only do reading search with no loop necessary.

Regards,

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loop in loop performance

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