Looping over fields from internal table

[Former Member]

In a FM I have to check records of two ITABs against each other. Most fields can be checked 1:1 but some must be checked according to some business logic.

I first want to check field-by-field and then I want to deal with exceptions.

Question: How can I loop over fields in an ITAB in such a manner that I can compare fields?

[RichHeilman]

Hi, you can loop thru the columns(fields) of an internal table like so.

field-symbols: <fs>.

loop at itab.

do.

* Here you can use the field name instead of SY-INDEX
   assign component sy-index of structure itab to <fs>.
   if sy-subrc <>.
   exit.
   endif.

* Now that you have access to the field via field symbol, you can compare 
* this value.
Write:/ <fs>.

enddo.  

endloop.

Regards,

Rich Heilman

[Former Member]

Suggestion:

Loop at Itab1.

Read itab2 with key XXX = itab2-field1 using index.

Comapre things.

Endloop.

Regards,

Mohan.

*Reward if helpful*

[Former Member]

Hi Jans,

Consider that you have two internal tables ITAB1 & ITAB2.

If your table ITAB2 has got multiple entries for the same set of values for ITAB1 then you can use as under:

<b>LOOP AT ITAB1.

LOOP AT ITAB2 where <condition> EQ <ITAB1-->'Condition'>

ENDLOOP.

ENDLOOP.</b>

If ITAB2 has just got one corresponding entry for the value in ITAB1, then you can use the read statement as under:

<b>LOOP AT ITAB1.

READ TABLE ITAB2 WITH KEY <field for comaprison> EQ <>

IF SY-SUBRC EQ 0.

ELSE.

<You can treat your exception conditions here>

ENDIF.</b>

Regards,

Chetan.

PS: Reward points if this helps.