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-rw-r--r--Bugzilla/Search.pm16
1 files changed, 11 insertions, 5 deletions
diff --git a/Bugzilla/Search.pm b/Bugzilla/Search.pm
index cc1354dcf..850a63457 100644
--- a/Bugzilla/Search.pm
+++ b/Bugzilla/Search.pm
@@ -1309,14 +1309,20 @@ sub _special_parse_chfield {
# if there is a "from" date specified. It doesn't conflict with
# searching [Bug creation], because a bug's delta_ts is set to
# its creation_ts when it is created. So this just gives the
- # database an additional index to possibly choose.
- #
- # It's not safe to do it for "to" dates, though--"chfieldto" means
- # "a field that changed before this date", and delta_ts could be either
- # later or earlier than that.
+ # database an additional index to possibly choose, on a table that
+ # is smaller than bugs_activity.
if ($date_from ne '') {
push(@charts, ['delta_ts', 'greaterthaneq', $date_from]);
}
+ # It's not normally safe to do it for "to" dates, though--"chfieldto" means
+ # "a field that changed before this date", and delta_ts could be either
+ # later or earlier than that, if we're searching for the time that a field
+ # changed. However, chfieldto all by itself, without any chfieldvalue or
+ # chfield, means "just search delta_ts", and so we still want that to
+ # work.
+ if ($date_to ne '' and !@fields and $value_to eq '') {
+ push(@charts, ['delta_ts', 'lessthaneq', $date_to]);
+ }
# Basically, we construct the chart like:
#