[MM-53408] server/user_store: avoid antijoin for IsEmpty query (matte…

…rmost#23966)
devinbinnie · Jul 20, 2023 · a307fd9 · a307fd9
1 parent 6c821c8
commit a307fd9
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/server/channels/store/sqlstore/user_store.go b/server/channels/store/sqlstore/user_store.go
@@ -2140,7 +2140,11 @@ func (us SqlUserStore) IsEmpty(excludeBots bool) (bool, error) {
 		From("Users")
 
 	if excludeBots {
-		builder = builder.LeftJoin("Bots ON Users.Id = Bots.UserId").Where("Bots.UserId IS NULL")
+		if us.DriverName() == model.DatabaseDriverPostgres {
+			builder = builder.LeftJoin("Bots ON Users.Id = Bots.UserId").Where("Bots.UserId IS NULL")
+		} else {
+			builder = builder.Where(sq.Expr("Users.Id NOT IN (SELECT UserId FROM Bots)"))
+		}
 	}
 
 	builder = builder.Suffix(")")