diff options
| author | Tom Lane <tgl@sss.pgh.pa.us> | 2007-01-22 01:35:23 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2007-01-22 01:35:23 +0000 |
| commit | 5a7471c307533a1b56260b3b074dfdd20e1be5ae (patch) | |
| tree | 6a3cff705e779eefac734882a66aee1631224394 /src/backend/commands/proclang.c | |
| parent | a85e9c61e579b15d0635e04870cf1cb069fdf9ee (diff) | |
Add COST and ROWS options to CREATE/ALTER FUNCTION, plus underlying pg_proc
columns procost and prorows, to allow simple user adjustment of the estimated
cost of a function call, as well as control of the estimated number of rows
returned by a set-returning function. We might eventually wish to extend this
to allow function-specific estimation routines, but there seems to be
consensus that we should try a simple constant estimate first. In particular
this provides a relatively simple way to control the order in which different
WHERE clauses are applied in a plan node, which is a Good Thing in view of the
fact that the recent EquivalenceClass planner rewrite made that much less
predictable than before.
Diffstat (limited to 'src/backend/commands/proclang.c')
| -rw-r--r-- | src/backend/commands/proclang.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/src/backend/commands/proclang.c b/src/backend/commands/proclang.c index d5300573400..028ab5e5217 100644 --- a/src/backend/commands/proclang.c +++ b/src/backend/commands/proclang.c @@ -7,7 +7,7 @@ * Portions Copyright (c) 1994, Regents of the University of California * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/commands/proclang.c,v 1.70 2007/01/05 22:19:26 momjian Exp $ + * $PostgreSQL: pgsql/src/backend/commands/proclang.c,v 1.71 2007/01/22 01:35:20 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -130,7 +130,9 @@ CreateProceduralLanguage(CreatePLangStmt *stmt) buildoidvector(funcargtypes, 0), PointerGetDatum(NULL), PointerGetDatum(NULL), - PointerGetDatum(NULL)); + PointerGetDatum(NULL), + 1, + 0); } /* @@ -160,7 +162,9 @@ CreateProceduralLanguage(CreatePLangStmt *stmt) buildoidvector(funcargtypes, 1), PointerGetDatum(NULL), PointerGetDatum(NULL), - PointerGetDatum(NULL)); + PointerGetDatum(NULL), + 1, + 0); } } else |