Use field symbols for better performance in internal tables

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,
spart LIKE vbak-spart,
kunnr LIKE vbak-kunnr,
END OF it_vbak_line.

DATA: it_vbak TYPE TABLE OF it_vbak_line.
FIELD-SYMBOLS: <it_vbak_line> TYPE it_vbak_line.

* or as a screaming fast hash table for keyed reads
TYPES: BEGIN OF it_vbpa_line,
vbeln LIKE vbak-vbeln,
kunnr LIKE vbak-kunnr,
END OF it_vbpa_line.

DATA: it_vbpa TYPE HASHED TABLE OF it_vbpa_line
WITH UNIQUE KEY vbeln.
FIELD-SYMBOLS: <it_vbpa_line> TYPE it_vbpa_line.

2) In ITAB processing, utilize the ASSIGNING command.
* loop example
LOOP AT it_vbak ASSIGNING <it_vbak_line>.
* look at records--populate it_zpartner
* read example
READ TABLE it_vbpa ASSIGNING <it_vbpa_line>
WITH TABLE KEY vbeln = <it_vbak_line>-vbeln.

3) Refer to the field symbol's fields in the loop or after the read.
wa_zpartner-vkorg = <it_vbak_line>-vkorg.
wa_zpartner-vtweg = <it_vbak_line>-vtweg.
wa_zpartner-spart = <it_vbak_line>-spart.
wa_zpartner-kunag = <it_vbak_line>-kunnr.
wa_zpartner-kunwe = <it_vbpa_line>-kunnr.

See the code example below for further detail. The code was written in R/3 4.6C and should work for all 4.x versions.

Code

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