Hello,

is it possible to change a column definition from "null" to "not null"
(provided that the column is not null for all rows)?

I had a look at the IB 6 docs and the release notes for 1.5 but it
seems that this is not possible. I was trying to add a primary key to
a table which has been (accidently) created without a PK, but the ADD
CONSTRAINT complains that the column is nullable (which is perfectly
OK, because a PK with NULLs doesn't make sense at all).
But I did not find a way to change it to NOT NULL without recreating
the table and importing the data again...

Am I right, or did I miss something?

Cheers
Thomas