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I never said this had anything to do with the "catalog" per se ...
AFAIK, the SQL "catalogs" are not the official "repository" of the actual "definitions" on the IBM i platform -- (it could be quite a different story with Db2 LUW, Db2z, mariaDB, mySQL, Oracle, postGreSQL, SQL Server, SYBASE, etc.)
AFAIK, for IBM i and Db2i, that information resides inside the "objects" e.g. the *FILEs that house the "tables" or "views" or "indexes" etc. -- and the "catalog" is then subsequently updated to reflect that information and make it more easily accessible (via queries) and also to conform to the ANSI SQL standards.
Mark S. Waterbury
On Wednesday, August 7, 2019, 7:18:48 AM EDT, Rob Berendt <rob@xxxxxxxxx> wrote:
Mark,
What I suspect here is that your DROP CONSTRAINT is being pointed to a specific table and can read the information from the table and not from the system catalog.
Rob Berendt
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