lxd/db/query/config.go
func upsertConfig(tx *sql.Tx, table string, values map[string]string) error {
	if len(values) == 0 {
		return nil // Nothing to update
	}

	query := fmt.Sprintf("INSERT OR REPLACE INTO %s (key, value) VALUES", table)
	exprs := []string{}
	params := []interface{}{}
	for key, value := range values {
		exprs = append(exprs, "(?, ?)")
		params = append(params, key)
		params = append(params, value)
	}
	query += strings.Join(exprs, ",")
	_, err := tx.Exec(query, params...)
	return err
}
func upsertConfig(tx *sql.Tx, table string, values map[string]string) error {
	if len(values) == 0 {
		return nil // Nothing to update
	}

	query := fmt.Sprintf("INSERT OR REPLACE INTO %s (key, value) VALUES", table)
	exprs := []string{}
	params := []interface{}{}
	for key, value := range values {
		exprs = append(exprs, "(?, ?)")
		params = append(params, key)
		params = append(params, value)
	}
	query += strings.Join(exprs, ",")
	_, err := tx.Exec(query, params...)
	return err
}
// Insert or updates the key/value rows of the given config table.