Question

我想创建一个表。这是创建表脚本

CREATE TABLE [dbo].[DimTenure1]
(
   [TenureWeekID] [int] IDENTITY(1,1) NOT NULL,
   [TenureWeek] [smallint] NOT NULL,
   [TenureWeekBand] ,
   [TenureMonth] [smallint] NOT NULL,
   [TenureMonthBand] ,
)

我必须创建TenureWeekBand和TenureMonthBand动态。

例如，当用户在TenureWeek中输入1时，会在TenureWeekBand中自动计算出来。

我可以在TenureWeekBand和TenureMonthBand列的创建表脚本中定义什么？

表

TenureWeek         TenureWeek                TenureMonth              [TenureMonthBand]
  1              week of 1 enrollment              1                month of 1 enrollment
  2              week of 2 enrollment              1                month of 1 enrollment
  3              week of 3 enrollment              1                month of 1 enrollment
  4              week of 4 enrollment              1                month of 1 enrollment
  5              week of 5 enrollment              2                month of 2 enrollment  
  6              week of 6 enrollment              2                month of 2 enrollment

Answer 1

您可以使用computed column：

CREATE TABLE [dbo].[DimTenure1]
(
   [TenureWeekID] [int] IDENTITY(1,1) NOT NULL,
   [TenureWeek] [smallint] NOT NULL,
   [TenureWeekBand] AS ('week of ' + CAST(TenureWeek AS VARCHAR(2)) + ' enrollment') PERSISTED,
   [TenureMonth] [smallint] NOT NULL,
   [TenureMonthBand] AS ('month of ' + CAST(Tenuremonth AS VARCHAR(2)) + ' enrollment') PERSISTED,
)

这可能不会让人怀疑是否真的有必要，因为它可以很容易地添加到视图（或报告）中，从而节省存储空间并加快插入/更新数据的过程你的桌子。

用于插入周和月的动态sql查询

1 个答案: