唯一索引 meaning in English
unique indexing
Examples
- Nonzero full - text catalog id , associated with the unique index that identifies the rows in a full - text indexed table
非零=全文目录id ，它与全文索引表中标识行的唯一索引相关。 - Unique is a constraint that provides entity integrity for a specified column or columns through a unique index
一个约束，该约束通过唯一索引为一个或多个指定列提供实体完整性。 - If the query references at least one table without a unique index , the keyset cursor is converted to a static cursor
如果查询引用了至少一个无唯一索引的表，则键集游标将转换为静态游标。 - When a unique index exists , the database engine checks for duplicate values each time data is added by a insert operations
如果存在唯一索引，数据库引擎会在每次插入操作添加数据时检查重复值。 - A unique index ensures that the index key contains no duplicate values and therefore every row in the table or view is in some way unique
唯一索引确保索引键不包含重复的值，因此，表或视图中的每一行在某种程度上是唯一的。