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create table t(foo varchar(10));
insert into t(foo) values('aaaaaaaaaaa');
Msg 2628 Level 16 State 1 Line 1
String or binary data would be truncated in table 'fiddle_b9c34e646e8544f29872960b2099bf48.dbo.t', column 'foo'. Truncated value: 'aaaaaaaaaa'.
Msg 3621 Level 0 State 0 Line 1
The statement has been terminated.