From f4ffbeb3f736f0cb033810007d5cfae9b6bc951f Mon Sep 17 00:00:00 2001
From: Mikhail Alpinskiy <m.alpinskiy@vk.team>
Date: Mon, 25 Nov 2024 14:38:42 +0300
Subject: [PATCH] SQL generator update

Ensure metric filter is not empty
---
 internal/api/sql.go | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/internal/api/sql.go b/internal/api/sql.go
index 847c3994b..d7f259217 100644
--- a/internal/api/sql.go
+++ b/internal/api/sql.go
@@ -653,7 +653,8 @@ func sqlMaxHost(version string) string {
 }
 
 func writeMetricFilter(sb *strings.Builder, metricID int32, filterIn, filterNotIn []*format.MetricMetaValue, version string) {
-	if metricID != 0 {
+	emptyFilter := len(filterIn) == 0 && len(filterNotIn) == 0
+	if metricID != 0 || emptyFilter {
 		sb.WriteString(" AND ")
 		sb.WriteString(metricColumn(version))
 		sb.WriteString("=")