Sql server SQL Server中基于值的递归更新
我有一个更新表的存储过程。使用日常作业调用此存储过程 存储过程的逻辑如下所示:Sql server SQL Server中基于值的递归更新,sql-server,tsql,stored-procedures,Sql Server,Tsql,Stored Procedures,我有一个更新表的存储过程。使用日常作业调用此存储过程 存储过程的逻辑如下所示: Update Basetable Set amount = Isnull(actualamount, 0) From Acutaltable Where jobcode Like '[%A-Z%]' Update Basetable Set amount = amount + Isnull(actualamount, 0) From Acutaltable Where jobcode Like '[%0-9%]'
Update Basetable
Set amount = Isnull(actualamount, 0)
From Acutaltable
Where jobcode Like '[%A-Z%]'
Update Basetable
Set amount = amount + Isnull(actualamount, 0)
From Acutaltable
Where jobcode Like '[%0-9%]'
jobcode
列每天用动态值更新(即:[%A-Z%]
jobcodes可以替换[%0-9%]
jobcodes)。因此,如果上述任何更新块失败,存储过程将导致错误的输出。我通过在每次更新之前添加此代码来处理此问题
UPDATE Basetable
SET amount = NULL
除此之外,如何处理上述情况
感谢您的帮助。您可以在下面这样的语句中使用case
UPDATE Basetable
SET amount = CASE
WHEN jobcode LIKE '[%A-Z%]'
THEN ISNULL(actualamount, 0)
WHEN jobcode LIKE '[%0-9%]'
THEN amount + Isnull(actualamount, 0)
ELSE NULL
END
FROM Acutaltable
您可以尝试使用下面的case语句
UPDATE Basetable
SET amount = CASE
WHEN jobcode LIKE '[%A-Z%]'
THEN ISNULL(actualamount, 0)
WHEN jobcode LIKE '[%0-9%]'
THEN amount + Isnull(actualamount, 0)
ELSE NULL
END
FROM Acutaltable