Question

我有下表：使用SQL Server

create table PoojaDetails
(
    PoojaDetailsID int identity constraint pk_PoojaDetailsID Primary Key, 
    ReceiptNo AS 'PB' + '/' + datepart(yy,getdate()) + '/' + RIGHT('000000' + CAST(PoojaDetailsID AS VARCHAR(10)), 6) PERSISTED,
    ReceiptDate datetime not null constraint df_ReceiptDate default getdate(),
    FirstName varchar(100) not null,
    LastName varchar(100) not null,
    TelNo bigint
)

当我执行查询时：计算列＆＃39; ReceiptNo＆＃39;在表格＆＃39; PoojaDetails＆＃39;无法持久化，因为该列是非确定性的。

我希望将ReceiptNo设为：PB /年/不例如; PB /二十一万三千四百三十三分之一十三

任何想法???谢谢你的时间

Answer 1

如果你可以依赖ReceiptDate总是被其默认约束填充而永不改变，那么你可以在计算列中使用它而不是getdate()：

create table PoojaDetails
(
    PoojaDetailsID int identity constraint pk_PoojaDetailsID Primary Key, 
    ReceiptNo AS 'PB' + '/' + CONVERT(varchar(5),datepart(yy,ReceiptDate)) + '/' + RIGHT('000000' + CAST(PoojaDetailsID AS VARCHAR(10)), 6) PERSISTED,
    ReceiptDate datetime not null constraint df_ReceiptDate default getdate(),
    FirstName varchar(100) not null,
    LastName varchar(100) not null,
    TelNo bigint
)

Answer 2

请尝试一下，

create table PoojaDetails
(
    PoojaDetailsID int identity constraint pk_PoojaDetailsID  Primary Key, 
    ReceiptNo  AS 'PB' + '/' + cast(datepart(yy,getdate()) as varchar(25)) + '/' + RIGHT('000000' + CAST(PoojaDetailsID AS VARCHAR(10)), 6) ,
    ReceiptDate datetime not null constraint df_ReceiptDate default getdate(),
    FirstName varchar(100) not null,
    LastName varchar(100) not null,
    TelNo bigint
)

具有自动生成字符的SQL标识

2 个答案: