add index to jobs table (#21090)

server/datastore/mysql/migrations/tables/20240806101121_AddJobsIndex.go

@@ -0,0 +1,21 @@
+package tables
+
+import (
+	"database/sql"
+	"fmt"
+)
+
+func init() {
+	MigrationClient.AddMigration(Up_20240806101121, Down_20240802113716)
+}
+
+func Up_20240806101121(tx *sql.Tx) error {
+	if _, err := tx.Exec(`CREATE INDEX idx_jobs_state_not_before_updated_at ON jobs (state, not_before, updated_at);`); err != nil {
+		return fmt.Errorf("creating jobs index: %w", err)
+	}
+	return nil
+}
+
+func Down_20240806101121(tx *sql.Tx) error {
+	return nil
+}

server/datastore/mysql/migrations/tables/20240806101121_AddJobsIndex_test.go

@@ -0,0 +1,26 @@
+package tables
+
+import (
+	"github.com/stretchr/testify/require"
+	"testing"
+)
+
+func TestUp_20240806101121(t *testing.T) {
+	db := applyUpToPrev(t)
+
+	// Apply current migration
+	applyNext(t, db)
+
+	// Check if the index exists
+	var indexExists bool
+	err := db.QueryRow(`
+		SELECT 1 FROM information_schema.statistics
+		WHERE table_schema = DATABASE()
+		AND table_name = 'jobs'
+		AND index_name = 'idx_jobs_state_not_before_updated_at'
+	`).Scan(&indexExists)
+
+	require.NoError(t, err)
+	require.True(t, indexExists, "Index idx_jobs_state_not_before_updated_at should exist")
+
+}