How do I disable errors on string truncation in SQL Server?

问题

How can I tell SQL Server not to raise an error if I insert or update a string longer than the size of the field - I would like silent truncation in this instance.

回答1:

The thing you have to do is set ANSI WARNINGS to OFF You can do that by calling

set ANSI_WARNINGS  OFF

I have also written a practical example:

create table bla(id varchar(2))
go

insert bla values ('123') --fails


set ANSI_WARNINGS  OFF

insert bla values ('123') --succeeds

Do remember to turn the ANSI warnings back ON when you are done. You can do so by calling:

set ANSI_WARNINGS ON

回答2:

Try casting the variable to the exact type and length before inserting it. That might do the trick. Casting (and converting) are much more flexible. :)

来源：https://stackoverflow.com/questions/528579/how-do-i-disable-errors-on-string-truncation-in-sql-server