SQL Server 2008: Bulk Datatype Change

Question

I have an SQL Server 2008 database with many tables. I\'ve been using the now lame datetime datatype and want to use the new and better datetime2.

Answer 1

I would use a query window, and output all of the ALTER TABLE statements you need to perform this. Once you have them all generated, you can run the result against the database.

if you select from SYSCOLUMNS the names of the tables and fields that you want, you can generate the statements you need to change all of the columns in the database to datetime2.

ALTER TABLE {tablename} ALTER COLUMN {fieldname} datetime2 [NULL | NOT NULL]