GDA: empty PostgreSQL table failed workaround

[Graham Leggett]

Derek Atkins wrote:

> I think the question was more:  Does every table have to HAVE
> a primary key?  Yes, the primary key must be unique, but what
> if a table has no primary key?  Is that still okay?

It's perfectly ok, yes - but primary keys are used heavily for 
optimisation. Without them, performance will suffer, particularly while 
generating reports.

Regards,
Graham
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