Prepare statement throws type error for enums. How to get type safety for prepared values

the status column in the schema is an enum like so:

 status: mysqlEnum("status", "PENDING", "ACCEPTED", "DECLINED")
      .notNull()
      .default("PENDING"),

 status: mysqlEnum("status", "PENDING", "ACCEPTED", "DECLINED")
      .notNull()
      .default("PENDING"),

and even type casting the placeholder does not work

  db.update(table).set({ status: sql.placeholder("status") as Status })

  db.update(table).set({ status: sql.placeholder("status") as Status })

is there a proper way to get type safety in general for prepared statements? Love the performance gains, but really bums me out that I loose all safeguards regarding types 😕

8 Replies

Angelelz•13mo ago

Check this typescript playground for a workaround

Angelelz•13mo ago

https://www.typescriptlang.org/play?noErrorTruncation=true#code/JYWwDg9gTgLgBAbzgEysAXugNgUzgXzgDMoIQ4AiVDbHAWmhAHoQBPAZwEcsAmCgKFCRYiOGy5YAKgEMARrgA0cAG7SoAYwAWapeO4BRAHYBXcoRJlK1TLgZRmerHXXQcAodHhIJSgMoBFABkCYlJyKjQbekYBfhdDdnhE6Rhjdhx2OABeOABtCgAFfQA5ABEASWKAcQolCgBBAGFG-QLJfVLaylL9RsDKjooAXThpTPjE-jiIBKSYFLTssQ4DExAACgpk1PYu7bSMgEp+OFOzgDpDCBhi4ywsdeOzi+QcImk7mE2issqa4-4MFYYDwvnmOyWQJBECIcH27CmE3g83kOHqS0cMlRmxRuAA+tIuggTnBgMgAFwqNRaNSbMlEuC4QwAcxgmkpAGYAAz4Q7nMBoEBqVgAaRwrEeChJ8Mp8P4vIA3IiZokULIltZaOsEIQxqNDKwAchZOdjGBkCkcOtcWi+ekvt5wWlZdx+VhpOocJoIFhXlBNvCKIdRpljIYANZXADuhhDcACgQAPIk0CyAHynXlAA

TS Playground - An online editor for exploring TypeScript and JavaS...

The Playground lets you write TypeScript or JavaScript online in a safe and sharable way.

Angelelz•13mo ago

Can create a new GH issue for this?

HocusOP•13mo ago

thanks, that works for now. I assume I didn't miss anything in the docs then and there is no better/type-safe way for prepared statements, like generics or something? yea I can add an issue for this

Angelelz•13mo ago

We just need to add the placeholder type to the mysqlEnum type

HocusOP•13mo ago

ok. It would be cool in general to get some typesafety for the prepared statements, specially for the object that is passed to the execute({...}) argument.

Angelelz•13mo ago

There is an open issue for that, we just haven't been able to get to that one yet

HocusOP•13mo ago

https://github.com/drizzle-team/drizzle-orm/issues/1608

GitHub

[BUG]: sql.placeholder throws type error for enums · Issue #1608 ...

What version of drizzle-orm are you using? 0.29.1 What version of drizzle-kit are you using? 0.20.6 Describe the Bug sql.placeholder throws type error for enums. import { drizzle } from "drizz...

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Prepare statement throws type error for enums. How to get type safety for prepared values