[release-11.6.0] Alerting: Add an index to alert_rule_version table on (rule_org_id, rule_uid) (#102353)

Alerting: Add an index to alert_rule_version table on (rule_org_id, rule_uid) (#102347)

(cherry picked from commit 9491fa1895)

pkg/services/sqlstore/migrations/migrations.go

@@ -147,4 +147,6 @@ func (oss *OSSMigrations) AddMigration(mg *Migrator) {
 	ualert.AddAlertRuleStateTable(mg)
 
 	ualert.AddAlertRuleGuidMigration(mg)
+
+	ualert.AddAlertRuleVersionUIDIndex(mg)
 }

pkg/services/sqlstore/migrations/ualert/alert_rule_version_uid_index.go

@@ -0,0 +1,15 @@
+package ualert
+
+import (
+	"github.com/grafana/grafana/pkg/services/sqlstore/migrator"
+)
+
+// AddAlertRuleVersionUIDIndex adds an index to the alert_rule_version table on (rule_org_id, rule_uid) columns.
+func AddAlertRuleVersionUIDIndex(mg *migrator.Migrator) {
+	mg.AddMigration("add index to alert_rule_version table on (rule_org_id, rule_uid)",
+		migrator.NewAddIndexMigration(
+			migrator.Table{Name: "alert_rule_version"},
+			&migrator.Index{Cols: []string{"rule_org_id", "rule_uid"}, Type: migrator.IndexType},
+		),
+	)
+}