sql - In TSQL for MSSMS 2000, how does one change a nonnullable column to be nullable? -


i know column doing reverse process (nullable nonnullable) is

alter table [course_enrollment] alter column [enrollment_date] datetime not null

but going nonnullable nullable? (i don't want mess things up, removing not above sql , therefore might risk changing default value null.)

this correct assumed:

alter table [course_enrollment] alter column [enrollment_date] datetime null;

in nullable column default in fact null unless specify otherwise.


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