GORM Playground Link

Sorry, no playground pull request here, but i will create a PR when this bug is confirm as a bug, not a wrong usage.

Description

When I use the Unscoped() function, the parsed sql seems to have serious errors, I'm not sure if this is a bug, or my wrong use? If it's my problem, should there be a little hint in the documentation?

error code below:

  db := data.GetDB().Unscoped() // get a instance of *gorm.DB
  subQuery := db.Model(table.User{}).Select("user_id").Where(table.User{EnterpriseId: "xxx"})
  var deletes []table.UserRelation
  // completely wrong sql here: 
  // DELETE FROM "user" WHERE "user"."enterprise_id" = 'xxx' AND user_id IN (DELETE FROM "user" WHERE "user"."enterprise_id" = 'xxx' AND user_id IN ()
  if err := db.Where("user_id IN (?)", subQuery).Delete(&deletes).Error; err != nil {
    return err
  }
  return nil

correct usage below:

  db := data.GetDB() // get a instance of *gorm.DB
  subQuery := db.Unscoped().Model(table.User{}).Select("user_id").Where(table.User{EnterpriseId: "xxx"})
  var deletes []table.UserRelation
  // correct sql here: 
  // DELETE FROM "user_relation" WHERE user_id IN (SELECT "user_id" FROM "user" WHERE "user"."enterprise_id" = 'xxx')
  if err := db.Unscoped().Where("user_id IN (?)", subQuery).Delete(&deletes).Error; err != nil {
    return err
  }
  return nil

Looking forward to reply and thanks in advance!

Comment From: github-actions[bot]

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Comment From: a631807682

After a Chain method, Finisher Method, GORM returns an initialized gorm.DB instance, which is NOT safe to reuse anymore, you should use a New Session Method to mark the gorm.DB as shareable.

https://gorm.io/docs/method_chaining.html#New-Session-Method

Comment From: axiangcoding

After a Chain method, Finisher Method, GORM returns an initialized gorm.DB instance, which is NOT safe to reuse anymore, you should use a New Session Method to mark the gorm.DB as shareable.

https://gorm.io/docs/method_chaining.html#New-Session-Method

Thanks, it explain why. And maybe add the full list to the document is a good idea? not a link to github sourcecode?

Comment From: a631807682

We have not introduce Chain Method and Finisher Method separately, because they are often not used alone, welcome to help us improve the document. https://github.com/go-gorm/gorm.io

Comment From: axiangcoding

We have not introduce Chain Method and Finisher Method separately, because they are often not used alone, welcome to help us improve the document. https://github.com/go-gorm/gorm.io

I'll add some hints and translate that page into Chinese, thanks again.