nonunique
基本解释
- n.非惟一
英汉例句
- Global prefixed indexes can be unique or nonunique.
全局前缀索引（globalprefixedindex）可以是唯一的或非唯一的。 - The assignment of pitch target is nonunique,and a ...
基频曲线可以同时兼有表达声调、焦点、新话题、情感等多种功能。 - Modifies more than one row and also updates the key of a nonunique clustered index to a nonconstant value.
修改多行并且还将非唯一的聚集索引的键更新为非常量值。 - If the nonclustered index is nonunique, the data row locator is combined with the nonclustered index key to produce a unique key value for every row.
如果非聚集索引不是唯一的,数据行定位符将与非聚集索引键组合使用,以便为每一行生成唯一的键值。 - For a nonunique index, the rowid is included in the key in sorted order, so nonunique indexes are sorted by the index key and rowid.
在没有索引的情况下，你获取一个值，必须对数据做一个有顺序的扫描。