createMany operation

[dpetrick]

Related issue: prisma/prisma#4998
Adds createMany top level and nested operations for creating many records at once. Returns the number of inserted rows.

Supported databases:

• SQL Server
• MySql
• Postgres

Input type for the operation is compatible with unchecked scalar inputs:

• All scalar fields are writable including foreign keys. Notable exceptions:
  • Autoincrement scalar fields are excluded on SQL Server.
  • Foreign key scalars are excluded when writing nested records (the foreign key scalar is implicitly set by the nested createMany).
• No relation field support.

Other constraints:

• Nested createMany is only available on 1:m relations where the many side is on the child.
• skipDuplicates is available for Postgres and MySQL to ignore unique key violations on bulk insert, but is unavailable on SQL server.

Examples:

mutation {
  createManyTest(skipDuplicates: true, data: [
    { id: 1, a: "a1", b: null },
    { id: 2, a: "a2", b: "b2" },
    { id: 1, a: "a", b: null } # skipped
  ]) {
    count
  }
}

mutation {
  createOneTest(data: {
    id: 1
    related: {
      createMany: {
        skipDuplicates: true,
        data: [{ id: 1 }, { id: 2 }]
      }
    }
  }) {
    related {
       id
    }
  }
}

[pimeys]

Actually, it's 2100. prisma/tiberius#104 -------- Original Message --------

…

On Jan 26, 2021, 15:58, Dominic Petrick wrote: @dpetrick commented on this pull request. --------------------------------------------------------------- In [query-engine/connectors/sql-query-connector/src/database/operations/write.rs](#1550 (comment)): > use user_facing_errors::query_engine::DatabaseConstraint; +/// The maximum amount of rows that can be inserted at once. +const MAX_ROWS: usize = 2500; SQL server has a limit of rows, as per ***@***.***(https://github.com/pimeys). — You are receiving this because you were mentioned. Reply to this email directly, [view it on GitHub](#1550 (comment)), or [unsubscribe](https://github.com/notifications/unsubscribe-auth/AAAIRF45NZHNFDXX4XXMOGLS33KCVANCNFSM4WR7UBRQ).