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-rw-r--r--Bugzilla/DB/Mysql.pm11
1 files changed, 11 insertions, 0 deletions
diff --git a/Bugzilla/DB/Mysql.pm b/Bugzilla/DB/Mysql.pm
index 33354cb44..7b2a7b2c2 100644
--- a/Bugzilla/DB/Mysql.pm
+++ b/Bugzilla/DB/Mysql.pm
@@ -143,6 +143,17 @@ sub sql_position {
}
}
+sub sql_group_by {
+ my ($self, $needed_columns, $optional_columns) = @_;
+
+ # MySQL allows to specify all columns as ANSI SQL requires, but also
+ # allow you to specify just minimal subset to get unique result.
+ # According to MySQL documentation, the less columns you specify
+ # the faster the query runs.
+ return "GROUP BY $needed_columns";
+}
+
+
sub bz_lock_tables {
my ($self, @tables) = @_;