default constraint造句
例句与造句
- F . adding a default constraint to an existing column
F .在现有列中添加一个default约束 - For more information about these default constraints , see
有关这些默认约束的更多信息，请参见 - Table has a default constraint
表具有default约束。 - As the default constraint , instead of
，而不是将 - If you do n ' t apply a constraint , a default constraint is applied for you
如果您并未具体指定，则使用默认的限制。 - It's difficult to find default constraint in a sentence. 用default constraint造句挺难的
- Bound defaults and default constraints cannot be used with an identity column
不能对标识列使用绑定默认值和default约束。 - Provide priority consignments facility , assign default constraint code automatically
提供“优先货物”设施，自动编制预设的限制代码 - As its default constraint , you should reset this configuration while doing the tutorial . you configure the auto - connect features in the
作为默认的约束，则应当在执行教程时重置此配置。 - Use session user with default constraints in either the create table or alter table statements , or use it as any standard function
Session _ user可在create table或alter table语句中与default约束一起使用，或者将它用作任何标准函数。 - If no default constraint is defined for the column , this function sets the column to null . an exception is thrown if the row is not marked as updatable
如果没有为该列定义默认的约束，此函数便将该列设置为空引用（在visual basic中为nothing ） 。 - When you execute drop login , the login is dropped even if database users are mapped to the login . expressions in computed columns , check constraints and default constraints
执行drop login时，即使数据库用户映射到该登录名，该登录名仍会被删除。 - This option cannot be used when there is a check or default constraint on a udt column , if a udt column is part of the primary key , or if a computed column references a udt column
如果udt列是主键的一部分或者计算列引用udt列，则当udt列上具有check或default约束时，此选项无法使用。 - The insert statement must supply values for all the columns in the view , even if the underlying member tables have a default constraint for those columns or if they allow for null values
即使基础成员表对这些列具有default约束或允许null值， insert语句也必须为视图中的所有列提供值。 - This option cannot be used when there is a check or default constraint on a user - defined type column , if a udt column is part of the primary key , or if a computed column references a udt column
如果udt列是主键的一部分或者计算列引用udt列，则当udt列上具有check或default约束时，此选项无法使用。 - For example , the as soon as possible constraint , which is the default constraint , tells microsoft project to schedule a task to start on the earliest date possible , taking predecessor links , lag or lead time , and other scheduling factors into account
譬如，默认的限制是“越早越好” ，此限制要求microsoftproject按以下原则排定任务的日程：满足前置链接、提前或推迟日期，以及其他日程排定因素后，在最早的可能日期开始任务。