diff options
Diffstat (limited to 'src/backend/utils/adt/selfuncs.c')
| -rw-r--r-- | src/backend/utils/adt/selfuncs.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/src/backend/utils/adt/selfuncs.c b/src/backend/utils/adt/selfuncs.c index 96946281dab..f05cc4f87ee 100644 --- a/src/backend/utils/adt/selfuncs.c +++ b/src/backend/utils/adt/selfuncs.c @@ -4129,7 +4129,9 @@ get_join_variables(PlannerInfo *root, List *args, SpecialJoinInfo *sjinfo, * commonly the same as the exposed type of the variable argument, * but can be different in binary-compatible-type cases. * isunique: TRUE if we were able to match the var to a unique index, - * implying its values are unique for this query. + * implying its values are unique for this query. (Caution: this + * should be trusted for statistical purposes only, since we do not + * check indimmediate.) * * Caller is responsible for doing ReleaseVariableStats() before exiting. */ |