表示插入的Map 的key与value的类型
// compound keys capability
type PrimaryKey = Array<string>;
primaryKeys: Map<string, PrimaryKey>
primaryKeys: Map<string, PrimaryKey> = defaultPrimaryKeys) => ({
表示插入的Map 的key与value的类型
// compound keys capability
type PrimaryKey = Array<string>;
primaryKeys: Map<string, PrimaryKey>
primaryKeys: Map<string, PrimaryKey> = defaultPrimaryKeys) => ({