diff options
| author | Tom Lane | 2011-09-04 19:41:49 +0000 |
|---|---|---|
| committer | Tom Lane | 2011-09-04 19:41:49 +0000 |
| commit | 4c2777d0b733220d9029f78817af8ce671e4a5ad (patch) | |
| tree | ed2001e3d7e99d05a77fbf1dac278a21fad853e4 /src/include/utils | |
| parent | 1cb108efb0e60d87e4adec38e7636b6e8efbeb57 (diff) | |
Change get_variable_numdistinct's API to flag default estimates explicitly.
Formerly, callers tested for DEFAULT_NUM_DISTINCT, which had the problem
that a perfectly solid estimate might be mistaken for a content-free
default.
Diffstat (limited to 'src/include/utils')
| -rw-r--r-- | src/include/utils/selfuncs.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/include/utils/selfuncs.h b/src/include/utils/selfuncs.h index 4208588c2eb..32d14b60290 100644 --- a/src/include/utils/selfuncs.h +++ b/src/include/utils/selfuncs.h @@ -121,7 +121,8 @@ extern void get_join_variables(PlannerInfo *root, List *args, VariableStatData *vardata1, VariableStatData *vardata2, bool *join_is_reversed); -extern double get_variable_numdistinct(VariableStatData *vardata); +extern double get_variable_numdistinct(VariableStatData *vardata, + bool *isdefault); extern double mcv_selectivity(VariableStatData *vardata, FmgrInfo *opproc, Datum constval, bool varonleft, double *sumcommonp); |