uuid_to_bin function with swap flag cause Null constraint error in MySQL in prisma v4

Bug description

If I use uuid_to_bin function along with the 2nd parameter swap flag in dbgenerated, when I create a new row, I get a null-constraint error in Prisma v4.4.

This is related to #12850 issue that was raised for v3 versions of Prisma.

How to reproduce

Use Prisma v4.4:

✅ no error:

model A {
  id String @id @default(dbgenerated("(uuid())")) @db.VarChar(36)
}

❌ error:

model B {
  id Bytes @id @default(dbgenerated("(uuid_to_bin(uuid(), 1))")) @db.Binary(16)
}

Expected behavior

No response

Prisma information

generator client {
  provider        = "prisma-client-js"
  previewFeatures = ["interactiveTransactions"]
}

datasource db {
  provider = "mysql"
  url      = env("DATABASE_URL")
}

model A {
  id             Bytes @id @default(dbgenerated("(uuid_to_bin(uuid(), 1))")) @db.Binary(16)
}

Update: The schema that is erroring out contained dbgenerated("(uuid_to_bin(uuid(), true))") and not dbgenerated("(uuid_to_bin(uuid(), 1))"). Swapping true for 1 made it work for me.

export const test = async () => {
  await prisma.a.create({ data: {} });
}

Environment & setup

• OS: macOS
• Database: MySQL
• Node.js version: v16.17.1

Prisma Version

prisma                  : 4.4.0
@prisma/client          : 4.4.0
Current platform        : darwin-arm64
Query Engine (Node-API) : libquery-engine f352a33b70356f46311da8b00d83386dd9f145d6 (at node_modules/@prisma/engines/libquery_engine-darwin-arm64.dylib.node)
Migration Engine        : migration-engine-cli f352a33b70356f46311da8b00d83386dd9f145d6 (at node_modules/@prisma/engines/migration-engine-darwin-arm64)
Introspection Engine    : introspection-core f352a33b70356f46311da8b00d83386dd9f145d6 (at node_modules/@prisma/engines/introspection-engine-darwin-arm64)
Format Binary           : prisma-fmt f352a33b70356f46311da8b00d83386dd9f145d6 (at node_modules/@prisma/engines/prisma-fmt-darwin-arm64)
Format Wasm             : @prisma/prisma-fmt-wasm 4.4.0-66.f352a33b70356f46311da8b00d83386dd9f145d6
Default Engines Hash    : f352a33b70356f46311da8b00d83386dd9f145d6
Studio                  : 0.474.0
Preview Features        : interactiveTransactions

[sidvenu]

Hey folks,

So I copy pasted the schema that is error-ing out wrongly. Here’s the erroring out schema:

generator client {
  provider        = "prisma-client-js"
  previewFeatures = ["interactiveTransactions"]
}

datasource db {
  provider = "mysql"
  url      = env("DATABASE_URL")
}

model A {
  id             Bytes @id @default(dbgenerated("(uuid_to_bin(uuid(), true))")) @db.Binary(16)
}

I realised substituting true for the value 1 makes it work perfectly in my local - but true and 1 from a MySQL perspective should be the same.

I can close this issue because dbgenerated("(uuid_to_bin(uuid(), 1))") works for me - but we potentially might want to keep this issue open to tackle dbgenerated("(uuid_to_bin(uuid(), true))") not functioning as expected.

[sidvenu]

Yup. I used db push to migrate the DB.