[pull] master from postgres:master #131
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This provides a convenient way to look up a database's OID. For
example, the query
SELECT * FROM pg_shdepend
WHERE dbid = (SELECT oid FROM pg_database
WHERE datname = current_database());
can now be simplified to
SELECT * FROM pg_shdepend
WHERE dbid = current_database()::regdatabase;
Like the regrole type, regdatabase has cluster-wide scope, so we
disallow regdatabase constants from appearing in stored
expressions.
Bumps catversion.
Author: Ian Lawrence Barwick <[email protected]>
Reviewed-by: Greg Sabino Mullane <[email protected]>
Reviewed-by: Jian He <[email protected]>
Reviewed-by: Fabrízio de Royes Mello <[email protected]>
Reviewed-by: Tom Lane <[email protected]>
Discussion: https://postgr.es/m/aBpjJhyHpM2LYcG0%40nathan
On close inspection, there does not seem to be a strong reason why these should be fully-reserved keywords. I guess they just escaped consideration in previous attempts to minimize PL/pgSQL's list of reserved words. Author: Tom Lane <[email protected]> Reviewed-by: Pavel Stehule <[email protected]> Discussion: https://postgr.es/m/[email protected]
The current code in resolve_column_ref (dating to commits 01f7d29 and fe24d78) believes that not finding a RECFIELD datum is a can't-happen case, in consequence of which I didn't spend a whole lot of time considering what to do if it did happen. But it turns out that it *can* happen if the would-be field name is a fully-reserved PL/pgSQL keyword. Change the error message to describe that situation, and add a test case demonstrating it. This might need further refinement if anyone can find other ways to trigger a failure here; but without an example it's not clear what other error to throw. Author: Tom Lane <[email protected]> Reviewed-by: Pavel Stehule <[email protected]> Discussion: https://postgr.es/m/[email protected]
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