https://github.com/julian-chu/advanced-go-training-homework

https://github.com/julian-chu/advanced-go-training-homework

Last synced: 19 days ago
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• Host: GitHub
• URL: https://github.com/julian-chu/advanced-go-training-homework
• Owner: Julian-Chu
• Created: 2021-04-23T17:04:40.000Z (almost 4 years ago)
• Default Branch: main
• Last Pushed: 2021-08-11T19:29:16.000Z (over 3 years ago)
• Last Synced: 2024-11-15T01:06:20.221Z (3 months ago)
• Language: Go
• Size: 247 KB
• Stars: 0
• Watchers: 3
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# advanced-go-training-homework

## week2

Q: When getting sql.ErrNoRows, should we wrap it and return?

my answer is no, please see comment below.

```go

err := s.db.QueryRow(`select user_id from user where email = $1`, email).Scan(&user.ID)

if err !=nil{

    // sql.ErrorNoRows means "user not found" in business logic level.

    // don't return sql.ErrorNoRows or it wrapped error because it's not a real database error

    // recommend to use custom error for business logic level

    if err == sql.ErrNoRows{

        return User{}, ErrNotFound

    }

    return User{}, err

}

return user, nil

```