Handle errors and warnings in REXX applications that use SQL

The WHENEVER statement is not supported by the SQL/REXX interface. You can use one of several substitutes, however.

Any of the following may be used instead:

A test of the REXX SQLCODE or SQLSTATE variables after each SQL statement to detect error and warning conditions issued by the database manager, but not for those issued by the SQL/REXX interface.
A test of the REXX RC variable after each SQL statement to detect error and warning conditions. Each use of the EXECSQL command sets the RC variable to:
0

Statement completed successfully.

+10

A SQL warning occurred.

-10

An SQL error occurred

-100

An SQL/REXX interface error occurred.

This can be used to detect errors and warnings issued by either the database manager or by the SQL/REXX interface.
The SIGNAL ON ERROR and SIGNAL ON FAILURE facilities can be used to detect errors (negative RC values), but not warnings.