sql: optimize a table name allocation

Release note: None
cockroachdb · Apr 20, 2023 · 0f2502f · 0f2502f
1 parent f8e4bcc
commit 0f2502f
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/pkg/sql/tenant_creation.go b/pkg/sql/tenant_creation.go
@@ -617,6 +617,8 @@ HAVING ($1 = '' OR NOT EXISTS (SELECT 1 FROM system.tenants t WHERE t.name = $1)
 	return roachpb.MakeTenantID(nextID)
 }
 
+var tenantIDSequenceFQN = tree.MakeTableNameWithSchema(catconstants.SystemDatabaseName, tree.PublicSchemaName, tree.Name(catconstants.TenantIDSequenceTableName))
+
 // getTenantIDSequenceDesc retrieves a leased descriptor for the
 // sequence system.tenant_id_seq.
 func getTenantIDSequenceDesc(ctx context.Context, txn isql.Txn) (catalog.TableDescriptor, error) {
@@ -635,9 +637,8 @@ func getTenantIDSequenceDesc(ctx context.Context, txn isql.Txn) (catalog.TableDe
 	coll := itxn.Descriptors()
 
 	// Full name of the sequence.
-	tn := tree.MakeTableNameWithSchema(catconstants.SystemDatabaseName, tree.PublicSchemaName, tree.Name(catconstants.TenantIDSequenceTableName))
 	// Look up the sequence by name with lease.
-	_, desc, err := descs.PrefixAndTable(ctx, coll.ByNameWithLeased(txn.KV()).Get(), &tn)
+	_, desc, err := descs.PrefixAndTable(ctx, coll.ByNameWithLeased(txn.KV()).Get(), &tenantIDSequenceFQN)
 	if err != nil {
 		return nil, err
 	}