specifying minimum number of characters in a column

Question

what if I want my password column for instance to have a minimum number of characters rather than a maximum is there a data type for this?

Answer 1

search for CHECK constraint. You can try specify with it

Answer 2

first you have to put youbId not null,so it will require a value for this instance

Answer 3

You can specify varchar data type. It will only use space corresponding to the data inserted.