mirrors/postgres
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Fix division by zero in the new range type histogram creation.

Browse Source 
Report and analysis by Matthias.
This commit is contained in:
Heikki Linnakangas 2012-08-30 20:27:19 +03:00
parent a66fca3f0c
commit 3e6eb0dd0a
1 changed files with 4 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
src/backend/utils/adt/rangetypes_typanalyze.c
View File

@ -158,7 +158,10 @@ compute_range_stats(VacAttrStats *stats, AnalyzeAttrFetchFunc fetchfunc,
/* Must copy the target values into anl_context */ /* Must copy the target values into anl_context */
old_cxt = MemoryContextSwitchTo(stats->anl_context); old_cxt = MemoryContextSwitchTo(stats->anl_context);
if (non_empty_cnt > 0) /*
* Generate a histogram slot entry if there are at least two values.
*/
if (non_empty_cnt >= 2)
{ {
/* Sort bound values */ /* Sort bound values */
qsort_arg(lowers, non_empty_cnt, sizeof(RangeBound), qsort_arg(lowers, non_empty_cnt, sizeof(RangeBound),