On Thu, 11 Nov 2021 12:56:21 -0600, Wendell Lovewell wrote:
>Billy's example explains it very well.
>
( that apparently refers to:
// SET RUNTEST1=0 )
>A) "IF" cannot be the first step, thus his IEFBR14 call
>B) "IF" only allows numerics. // IF (&DOTHIS="YES") will not work like you
>want, but // IF (&DOTHIS=1) or // IF (&DOTHIS=0) will work. I don't know how
>high of a value you can check, but I've used up to 5 (for day-of-the-week)
>successfully.
>
Repeating what I said earlier:
Be careful. The JCL Ref. states some peculiarly harsh syntax rules, then:
Relational-expression keywords
The following keywords are the only keywords supported by IBM and
recommended for use in relational- expressions. Any other keywords,
even if accepted by the system, are not intended or supported keywords.
And further:
Comparison operators
Use comparison operators in a relational-expression to compare a keyword with a
numeric value. The comparison results in a true or false condition.
...
Considerations when using the IF/THEN/ELSE/ENDIF construct
...
• You can specify symbolic parameters on IF/THEN/ELSE/ENDIF statements provided
that they resolve to one of the supported relational-expression keywords. Any
other symbolic parameters, even if accepted by the system, are not intended or
supported. Refer to “Relational-expression keywords” on page 366.
You are relying on constructs which "... even if accepted by the system,
are not intended or supported."
-- gil
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