As we know that the rails migration is used to interact with the database and create schemas.many a time when we are creating migrations, we may forget to add a column in the table.or sometimes a need ...

We usually face this kind of issue when we are doing programing with respect to a column with varchar data-type. if we don't add any value to a particular column it takes it as null. thus forcing the ...

Using default values on database columns helps to insulate database design issues from application code. Find out how to change a column's default value at a later date using a single command.

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