Sign up to save your podcasts
Or
Share Make your DB schema as restrictive as possible for easier migrations
Share to email
Share to Facebook
Share to X
Share to email
Share to Facebook
Share to X
Or
Make your DB schema as restrictive as possible for easier migrations
Hello there friends. Welcome to June I am thinking about Postgres and
Prisma and that sort of thing a lot lately because I'm working on my
website and doing that sort of thing and one tip that I have for you if you
ever do database sort of things is try to make sorry to make your data as.
As restrictive as possible. Early on as as you're trying to make things. So
like make things if you're like, I don't know if there should be a required
field or not make it required. If you're this is an enum but we could have
this we could have a lot of different values for this potentially have the
fewest number of values possible to get you to the next phase.
The reason is because it's a lot easier to later do a migration.That
expands the permissive venous of that schema than going the other direction
because when you go the other direction, you have to find all of the data
rows that don't go into the new schema and update those so that they they
fit.
So, for example, if you have a first name field and you decide to make it
optional first and then after you have a bunch of users you come in later
and you decide no no this first name field needs to.Be required. Well, now
you have to first go and update all of the usernames to be like unknown or
something before you can do that schema update.
And so yeah, just try to when you're starting a new project or when you're
yeah, I guess not even a new project but when you're adding a new model or
something like that try to be as restrictive as possible early and then you
can loosen things up later when you have more context and you know, what
makes more sense.
So yeah, hopefully that's helpful and interesting. IIt's this is just
personally affected me because I I was really loose at the start of this
project and then I had to tighten things up and it's kind of annoying. So
anyway, I hope that's interesting helpful. Ah, but a nice day.
View all episodes
By Kent C. Dodds
5
44 ratings
Hello there friends. Welcome to June I am thinking about Postgres and
Prisma and that sort of thing a lot lately because I'm working on my
website and doing that sort of thing and one tip that I have for you if you
ever do database sort of things is try to make sorry to make your data as.
As restrictive as possible. Early on as as you're trying to make things. So
like make things if you're like, I don't know if there should be a required
field or not make it required. If you're this is an enum but we could have
this we could have a lot of different values for this potentially have the
fewest number of values possible to get you to the next phase.
The reason is because it's a lot easier to later do a migration.That
expands the permissive venous of that schema than going the other direction
because when you go the other direction, you have to find all of the data
rows that don't go into the new schema and update those so that they they
fit.
So, for example, if you have a first name field and you decide to make it
optional first and then after you have a bunch of users you come in later
and you decide no no this first name field needs to.Be required. Well, now
you have to first go and update all of the usernames to be like unknown or
something before you can do that schema update.
And so yeah, just try to when you're starting a new project or when you're
yeah, I guess not even a new project but when you're adding a new model or
something like that try to be as restrictive as possible early and then you
can loosen things up later when you have more context and you know, what
makes more sense.
So yeah, hopefully that's helpful and interesting. IIt's this is just
personally affected me because I I was really loose at the start of this
project and then I had to tighten things up and it's kind of annoying. So
anyway, I hope that's interesting helpful. Ah, but a nice day.