populate a column with a value based on value of other column alter table sql

Question

I have a table 'Data' with a column 'Date'

I need to add another column called flag and populate it with 0 if the date is less than 2 years from current date and populate it with 1 if the date is more than 2 years from current date.

I did it by adding column using alter table and using update set statement as below

alter table data add flag INTEGER constraint flag_value check (flag in(0,1));

Is there a way to do this using just one alter table statement without using update set?

Answer 1

Is there a way to do this using just one alter table statement without using update set?

Not in sqlite, which does not support computed columns and there is no way to run a default UPDATE via an ALTER TABLE statement.

You could use the view approach from the linked question, or do as you've done and issue separate ALTER TABLE and UPDATE statements.