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- Each element of an array is identified by a unique index number. 数组中的每个元素由一个唯一索引号标识。
- Column ID of the unique index identified by FULLTEXT_KEY_NAME. 以FULLTEXT_KEY_NAME标识的唯一索引的列ID。
- Cannot insert duplicate key row in object '%.*ls' with unique index '%.*ls'. 不能在具有唯一索引 ''%253!'' 的对象 ''%251!'' 中插入重复键的行。
- Two rows can both contain all nulls without violating a unique index. 当数据膨胀时，这不是一个好的衡量指数。
- The common field from the primary table must be a primary key or have a unique index. 来自于主表的公共字段必须为主键或具有唯一索引。
- A unique index is one in which no two rows are permitted to have the same index value. 唯一索引是不允许其中任意两行具有相同索引值的索引。
- A warning message is issued, and only the rows that violate the UNIQUE index fail. 发出警告消息,只有违反UNIQUE索引的行失败。
- ID of the corresponding unique index in the parent object that was created to enforce this constraint. 为强制该约束而创建的父对象中相应唯一索引的ID。
- Equating a column to a value: estimate one row when the column has a unique index or is the primary key. 使某列等于某个值:当该列具有唯一索引或者成为主键时预计一行。
- Creating a unique index guarantees that any attempt to duplicate key values fails. 创建唯一索引可以确保任何生成重复键值的尝试都会失败。
- 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。
- All of the tables in the main data connection must contain a primary key, unique constraint, or unique index. 主数据连接中的所有表都必须包含一个主键、唯一约束或唯一索引。
- Is a constraint that enforces entity integrity for a specified column or columns by using a unique index. 通过唯一索引对指定的一列或多列强制实体完整性的约束。
- 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。
- Is a constraint that provides entity integrity for a specific column or columns by using a unique index. 是通过唯一索引为特定的一列或多列提供实体完整性的约束。
- Is a constraint that provides entity integrity for a specified column or columns by using a unique index. 通过唯一索引为指定的一列或多列提供实体完整性的约束。
- 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。
- Columns of a unique index are allowed to be NULL, while columns in a unique constraint are not. 唯一索引的列可以为NULL,而唯一约束的列不能为NULL。
- The matching field from the primary table must either be a primary key or have a unique index. 来自于主表的匹配字段必须为主键或具有唯一索引。
- Always select the smallest unique index available for your full-text unique key. 始终选择可用于全文唯一键的最小唯一索引。
- 今日热词
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- 农业及相关产业增加值 - the added value of agriculture and related industries
