Issue Description

While using model.bulkCreate, as we pass the options, an object which contains transaction, it comes modified after the execution

What are you doing?

We have called bulk

Ultimately this will create a unique column (or group of columns) in the database which may or may not be used as the principal end of a relationship. In other words, it's a way to make a non-primary key column have a unique constraint without explicitly specifying a unique index.

This is not technically blocked on #4073, but should probably not be implemented until #4073 is fixed.

Visiting https://github.com/diesel-rs/r2d2-diesel has a deprecation notice at the top pointing towards the r2d2 module powered by: https://github.com/sfackler/r2d2, which has great documentation on the package. However on our end there is no documentation on how integration with diesel works. Should we document how to properly use this?

The source in diesel specifies "See the [r2d2 documentatio

Discussed from prisma/prisma#3930
https://prisma-company.slack.com/archives/CEYCG2MCN/p1602759196130900

In the CLI in the preinstall hook we could use something like

const nodeVersions = process.version.split('.')
const nodeMajorVersion = parseInt(nodeVersions[0].slice(1))
const nodeMinorVersion = parseInt(nodeVersions[1])

if (nodeMajorVersion < 10) {
// 

go-pg doesn't follow any fixed constraint name conventions.

type TestAccess struct {
	Id        string   `pg:"type:uuid,default:uuid_generate_v4()" json:"id"`
	BatchId   string   `pg:"type:uuid,on_delete:CASCADE,unique:batch_id_test_id" json:"batch_id,omitempty"`
	Batch     *Batch   `json:"batch,omitempty"`
	StudentId string   `pg:"type:uuid,on_delete:CASCADE" json:"student_id,omitempt

what is prefer way to add relation and remove relation? I found example as below, but I did't find any document about the two methods.

 case 'ADD_AUTHOR_TO_BOOK':
        Book.withId(action.payload.bookId).authors.add(action.payload.author);  // add new entity ,  add relation?  this doesn't work.
        break;
    case 'REMOVE_AUTHOR_FROM_BOOK':
        Book.withId(action.payload.bo