Yes it works when using the CAST function: 
$ diff call.function.pl~ call.function.pl
76c76
<     $dbh->prepare(qq{SELECT DB2INST1.FUNC_JUST_RETURN_IT(?) FROM SYS
+IBM.SYSDUMMY1});
---
>     $dbh->prepare(qq{SELECT DB2INST1.FUNC_JUST_RETURN_IT(CAST(? AS I
+NT)) FROM SYSIBM.SYSDUMMY1});
$ /usr/bin/perl -w call.function.pl
ok 1 - Expect 123456 returned
ok 2 - Expect 123456 returned
1..2

[download]
Thank you very much.
--
No matter how great and destructive your problems may seem now, remember, you've probably only seen the tip of them. [1]

In reply to Re^2: Does DB2 support bind variables to user defined functions (UDF)? by andreas1234567
in thread Does DB2 support bind variables to user defined functions (UDF)? by andreas1234567

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