topic Re: dynamic where condition on a loop in Application Development and Automation Discussions

dynamic where condition on a loop

Former Member — Thu, 14 Feb 2008 16:37:20 GMT

Hello,

I need to do a dynamic where condition on a loop for example:


DATA dyn_cond TYPE STRING.

dyn_cond = 'field = 123'.

LOOP AT itab WHERE dyn_cond.
...
ENDLOOP.

The compiler throw me a compiler error.

Thanks for your help.

Re: dynamic where condition on a loop

Former Member — Thu, 14 Feb 2008 16:42:41 GMT


DATA dyn_cond TYPE STRING.
 
dyn_cond = 'field = 123'.
 
LOOP AT itab WHERE ( dyn_cond ).
...
ENDLOOP.

Greetings,

Blag.

Re: dynamic where condition on a loop

Former Member — Thu, 14 Feb 2008 16:43:32 GMT

I don't think you can use dynamic WHEREs in a LOOP AT statement. But you can use ranges and fill them dynamically.

Rob

Re: dynamic where condition on a loop

ThomasZloch — Thu, 14 Feb 2008 16:48:25 GMT

as said, not possible for LOOP, only for SELECT.

So dump your internal table contents into a Z-table and do a SELECT

But seriously, other than dynamically generating a temporary program I don't see a way to do this.

Greetings

Thomas

Re: dynamic where condition on a loop

former_member194669 — Thu, 14 Feb 2008 17:15:56 GMT

This is what i get F1 on LOOP

Addition 3

... WHERE log_exp

Effect

WHERE can be specified with all table-types. After WHERE, you can specify any logical expression log_exp in which the first operand of any singular comparison is a component of the internal table. For this reason, all logical expressions are possible except for IS ASSIGNED, IS REQUESTED and IS SUPPLIED. Dynamic specification of a component through bracketed character-type data objects is not possible Loops at sorted tables must have compatible operands of the logical expression. All rows are read for which the logical expression is true.

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Re: dynamic where condition on a loop

Former Member — Thu, 14 Feb 2008 19:48:39 GMT

O.K.

But what is correct solution for this.

Best Regars.

Re: dynamic where condition on a loop

Former Member — Thu, 14 Feb 2008 19:49:09 GMT

O.K.

But what is correct solution for this?

Best Regars.

Re: dynamic where condition on a loop

Former Member — Thu, 14 Feb 2008 20:53:09 GMT

Check my earlier response - you can use ranges.

Rob

Re: dynamic where condition on a loop

ThomasZloch — Fri, 15 Feb 2008 09:05:54 GMT

however with ranges, you can only prepare the check values dynamically, but not the fields to be checked.

My answer to the OP is: there is no way to do this, except the very last and complex alternative, generate ABAP code on the fly and executing that.

Re: dynamic where condition on a loop

Former Member — Fri, 15 Feb 2008 14:11:09 GMT

Well - you would have to set up ranges for all fields that might be checked. This wouldn't be a lot different that setting up a dynamic WHERE.

Rob