topic Re: Check 1 = 2 in Application Development and Automation Discussions

Check 1 = 2

Former Member — Tue, 30 Aug 2005 14:28:29 GMT

Hi,

Can anyone explain the <b>'1 = 2'</b> which you can find in SAP sources (for example : SAPDBVAV, SAPDBVLV, SAPF011) ?

Regards,

Rob Makelaar

The Netherlands

Re: Check 1 = 2

RichHeilman — Tue, 30 Aug 2005 14:38:26 GMT

It looks to me that it is being used as a way of exiting the FORM. For example, in the program SAPF011.



FORM VORTRAG_AUF_GLEICHES_KONTO.

  IF CONTR-EXIST = SPACE.
    MIGTAB-RACCT = EXTR-RACCT.
    MIGTAB-BUKRS = EXTR-BUKRS.
    CASE CONTR-ERROR.
      WHEN 'SKA1'. MIGTAB-TEXT1 = TEXT-007.
      WHEN 'SKB1'. MIGTAB-TEXT1 = TEXT-008.
      WHEN 'T001'. MIGTAB-TEXT1 = TEXT-026.
    ENDCASE.
    COLLECT MIGTAB.
    CHECK 1 = 2.
  ENDIF.

If it goes inside this IF statement, then it will never go any further in the FORM, it will exit at the CHECK 1 = 2.

Not sure why they didn't just use the "EXIT" statement.

Regards,

Rich Heilman

Re: Check 1 = 2

FredericGirod — Tue, 30 Aug 2005 14:39:40 GMT

It's a not possible equality, so you will stop at this point and exit the form. It's like an EXIT command.

The people who make this code like to play

Regards

Frédéric

Re: Check 1 = 2

FredericGirod — Tue, 30 Aug 2005 14:41:23 GMT

maybe the return code is different

Re: Check 1 = 2

Former Member — Tue, 30 Aug 2005 14:56:42 GMT

It's a way to not execute the code of program after the control.

In a routine like FORM you could also write EXIT instead of CHECK 1 = 2 or...... CHECK 'BATMAN' = 'ROBIN'.... eh! eh! eh!

Re: Check 1 = 2

Former Member — Tue, 30 Aug 2005 14:57:22 GMT

Hi,

I suppose that this CHECK performs always a negative result.

"CHECK with a negative outcome terminates the current loop pass and goes back to the beginning of the loop to start the next pass, if there is one. "

Svetlin

Re: Check 1 = 2

RichHeilman — Tue, 30 Aug 2005 14:59:50 GMT

Please award points for helpful answers and mark this post as solved. Thanks.

Regards,

Rich Heilman

Re: Check 1 = 2

sergey_korolev — Tue, 30 Aug 2005 15:04:44 GMT

Sometimes it used to make possible searching something (e.g. messages) via <b>where-used</b> list. E.g. there are places where they collect messages into some application log without issueing it by MESSAGE statement, and obviously in that case you cannot find particular message via where-used list. And certainly something like

IF 1 = 2.
  MESSAGE ....
ENDIF.

can help somehow.