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Restructure representation of aggregate functions so that they have pg_proc

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entries, per pghackers discussion.  This fixes aggregates to live in
namespaces, and also simplifies/speeds up lookup in parse_func.c.
Also, add a 'proimplicit' flag to pg_proc that controls whether a type
coercion function may be invoked implicitly, or only explicitly.  The
current settings of these flags are more permissive than I would like,
but we will need to debate and refine the behavior; for now, I avoided
breaking regression tests as much as I could.
This commit is contained in:
Tom Lane
2002-04-11 20:00:18 +00:00
parent 3f6299df6c
commit 902a6a0a4b
63 changed files with 2530 additions and 2440 deletions
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9
src/interfaces/python/tutorial/syscat.py
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@ -101,10 +101,11 @@ def list_lang_func(pgcnx, l):
# lists all the aggregate functions and the type to which they can be applied
def list_agg_func(pgcnx):
result = pgcnx.query("""SELECT a.aggname, t.typname
FROM pg_aggregate a, pg_type t
WHERE a.aggbasetype = t.oid
ORDER BY aggname, typname""")
result = pgcnx.query("""SELECT p.proname, t.typname
FROM pg_aggregate a, pg_proc p, pg_type t
WHERE a.aggfnoid = p.oid
and p.proargtypes[0] = t.oid
ORDER BY proname, typname""")
return result
# lists all the operator classes that can be used with each access method as