Bruce Momjian <pgman@candle.pha.pa.us> writes:
> OK, so it seems we need:
> o make private objects accessable only to objects
> in the same schema
> o Allow current_schema.objname to access current
> schema objects
> o session variables
> o nested schemas?
There's been a lot of handwaving about nested schemas in this thread,
but no one has explained how they could actually *work* given the SQL
syntax rules. In general, "a" is a column from the current table
set, "a.b" is a column b in table/alias a from the current query,
"a.b.c" is a column c from table b in schema a, "a.b.c.d" is a column
d from table c in schema b in catalog a, and any more than that is
a syntax error. I do not see how to add nested schemas without creating
unworkable ambiguities, not to say outright violations of the spec.
regards, tom lane
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