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| author | Bruce Momjian <bruce@momjian.us> | 1997-02-07 16:24:12 +0000 |
|---|---|---|
| committer | Bruce Momjian <bruce@momjian.us> | 1997-02-07 16:24:12 +0000 |
| commit | 2300ac0dc4fc5702a6a693fdd769be8784314882 (patch) | |
| tree | a32cf00233cf76654a5fd35fc52f873c28d4becf /src/backend/utils/adt/selfuncs.c | |
| parent | 4c0faba0febc28b865e4eeaebbef244e060cc1d6 (diff) | |
| download | postgresql-2300ac0dc4fc5702a6a693fdd769be8784314882.tar.gz postgresql-2300ac0dc4fc5702a6a693fdd769be8784314882.zip | |
Add attribute optimization statistics.
Diffstat (limited to 'src/backend/utils/adt/selfuncs.c')
| -rw-r--r-- | src/backend/utils/adt/selfuncs.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/src/backend/utils/adt/selfuncs.c b/src/backend/utils/adt/selfuncs.c index c8d7bf49ec5..769024bd427 100644 --- a/src/backend/utils/adt/selfuncs.c +++ b/src/backend/utils/adt/selfuncs.c @@ -12,7 +12,7 @@ * * * IDENTIFICATION - * $Header: /cvsroot/pgsql/src/backend/utils/adt/selfuncs.c,v 1.4 1996/11/03 06:53:08 scrappy Exp $ + * $Header: /cvsroot/pgsql/src/backend/utils/adt/selfuncs.c,v 1.5 1997/02/07 16:23:39 momjian Exp $ * *------------------------------------------------------------------------- */ @@ -33,6 +33,7 @@ #include "utils/lsyscache.h" /* for get_oprrest() */ #include "catalog/pg_statistic.h" +#include "commands/vacuum.h" /* for ATTNVALS_SCALE */ /* N is not a valid var/constant or relation id */ #define NONVALUE(N) ((N) == -1) @@ -68,7 +69,7 @@ eqsel(Oid opid, if (nvals == 0) *result = 0.0; else - *result = 1.0 / nvals; + *result = ((float64data)nvals) / ((float64data)ATTNVALS_SCALE); } return(result); } @@ -125,7 +126,7 @@ intltsel(Oid opid, if (nvals == 0) *result = 1.0 / 3.0; else - *result = 3.0 / nvals; + *result = 3.0 * ((float64data)nvals) / ((float64data)ATTNVALS_SCALE); }else { bottom = high - low; if (bottom == 0) @@ -192,7 +193,7 @@ eqjoinsel(Oid opid, if (max == 0) *result = 1.0; else - *result = 1.0 / max; + *result = ((float64data)max) / ((float64data)ATTNVALS_SCALE); } return(result); } |