Why do you need the OID to know exactly what function something is? What's wrong with schema.function(args)?

oid is simply unique. I can take source code, args and all without parsing. It's only one difference. I unlike parsing.

decibel=# select 'pg_catalog.abstimelt (abstime,abstime)'::regprocedure::oid;

hmm, it changes situation. With it OID isn't really necessery. i didn't know it before.

Pavel Stehule

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