限定时 meaning in English
these those
Examples
- When unqualified , the instance is implicitly the
未限定时，该实例是隐式 - The readability is further improved if table aliases are used , especially when the table names themselves must be qualified with the database and owner names
如果使用了表的别名，将会进一步提高可读性，尤其是当表名自身必须用数据库名和所有者名加以限定时。