唯一索引 meaning in English
unique indexing
Examples
- Creating unique indexes
创建唯一索引 - A warning message is issued and only the rows violating the unique index fail
发出一条警告信息，但只有违反了唯一索引的行才会失败。 - Is a constraint that enforces entity integrity for a specified column through a unique index
一个约束，该约束通过唯一索引来强制指定列的实体完整性。 - Duplicate values must be removed before a unique index can be created on the column or columns
必须先删除重复值，然后才能为一列或多列创建唯一索引。 - This set of columns may be generated from a base table primary key , a unique constraint , or a unique index
这组列可以从基表主键唯一约束或唯一索引生成。