Changing the maximum length of a varchar column?

Question

I\'m trying to update the length of a varchar column from 255 characters to 500 without losing the contents. I\'ve dropped and re-created tables before but I\'ve never been expo

Answer 1

This worked for me in db2:

alter table "JOBS"  alter column "JOB_TITLE" set  data type varchar(30);

Answer 2

ALTER TABLE TABLE_NAME MODIFY COLUMN_NAME VARCHAR(40);

Late to the question - but I am using Oracle SQL Developer and @anonymous's answer was the closest but kept receiving syntax errors until I edited the query to this.

Hope this helps someone

Answer 3

For MariaDB, use modify column:

ALTER TABLE table_name MODIFY COLUMN column_name VARCHAR (500);

It will work.