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Home/ Questions/Q 3951
Alex Hales
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Alex HalesTeacher
Asked: June 3, 20222022-06-03T06:59:53+00:00 2022-06-03T06:59:53+00:00

database – Prisma specific one to many relation

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I am a newbie with Prisma and would like to see how would prisma user do such a call.

I have the following models:

model ChallengeScore {
  id          Int @id @default(autoincrement())
  user       User @relation(fields: [username], references: [username])
  username     String
  challenge Challenge @relation(fields: [challengeAddress], references: [address])
  challengeAddress String
  isGasScore Boolean
  isByteScore Boolean
  score       Int
}

model Challenge {
  address String @unique
  id Int @id @default(autoincrement())
  description String
  title String
  challengeScores ChallengeScore[]
}

What I want is fetch the challengeScores of a specific user for specific address where isGasScore is true and where score is the lowest. I want to do the same thing for isByteScore is true and score is the lowest.
I also want to fetch for the same specific address the 5 lowest scores (for any users) where isByteScore is true and where is isGasScore is true.

Is it doable in one call? If so what would it look like?

Also what is best practice, should I just fetch all the challengeScores and then filter it out the way I want on the front-end? I am guessing the first option is more costy db wise?

Any advice is appreciated !

Thank you

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