sql - Inserting a new column for serial number -


i have table 500 records in , want insert new column "serial number" starting 1.

if care order in identity values assigned, best off doing this:

create table dbo.newtable (   serialnumber int identity(1,1),   ... other columns original table ... );  insert dbo.newtable(...other columns...)   select ...other columns...   dbo.originaltable   order ...ordering criteria...   option (maxdop 1); -- prevent parallelism messing identity  drop table dbo.originaltable;  exec sp_rename n'dbo.newtable', n'originaltable', n'object';

you may have deal constraints etc. , want in transaction. point adding identity column table assign identity values in arbitrary order. if don't care how existing values assigned serial numbers, use kyle's answer.


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