a Gap of 2 Guids rolled back and insert into XXX(x) values(1) insert into XXX(x) values(2) insert into XXX(x) values(3) GO insert into XXX(x) values(99999999999999) -- overflow GO insert into XXX(x) values(4) insert into XXX(x) values(5) insert into XXX(x) values(6) go select * from xxx AC613611-CFA3-E111-9E8E-005056C00008 1 AD613611-CFA3-E111-9E8E-005056C00008 2 AE613611-CFA3-E111-9E8E-005056C00008 3 **B0613611-CFA3-E111-9E8E-005056C00008 4** Gap of 1 - overflow failure B1613611-CFA3-E111-9E8E-005056C00008 5 B2613611-CFA3-E111-9E8E-005056C00008 6 NEWSEQUENTIALGUID (as every guid generated in a way that warrant their sequence) includes a part of the Guid calculated via a time stamp.
REFERENCES permission on the type is required for computed columns based on common language runtime (CLR) user-defined type expressions.
PERSISTED Specifies that the SQL Server Database Engine will physically store the computed values in the table, and update the values when any other columns on which the computed column depends are updated.
I used the Access 2003 upsizing Wiz to migrate to SQL-Server 2005. When editing a table design, I get errors when saving.
Actually, each rec already had a GUID-ID autovalue column in Access. in such case change the datatype in sql server for that column to Varchar(100) instead of rowguid.
The expression can be a noncomputed column name, constant, function, variable, and any combination of these connected by one or more operators.