Hi,

Tom Lane wrote:
Yah.  However, I started to look at doing this and immediately hit a
stumbling block: we need a representation in pg_depend for a column's
default expression (as distinct from the column itself).

Just to understand the issue here: what's the reason for having an OID for the default value and possible another one for a ACLs, but none for the attribute itself?

Why don't we just have a unique OID for pg_attribute (i.e. drop the BKI_WITHOUT_OIDS of pg_attribute) and merge in the default values and ACLs?

Regards

Markus Wanner

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