When creating a user using this command:
create user 'foo'@localhost';
this error is shown:
ERROR 1054 (42S22): Unknown column 'password_last_changed' in 'mysql.user'
Using MySQL server version: 5.7.6
I tried to add it but I don't know its data-type How can I fix this?
Apparently you upgraded your MySQL to 5.7 from an earlier version.
Column 'password_last_changed' used to exist in MySQL <5.7, but was removed since 5.7
If this is the case, you have to run 'mysql_upgrade' script to migrate some tables from the old version to the new one.
run
mysql_upgrade -u root -p
and enter your root password.
then you should have your problem solved