How can I handle errors in a Go query builder?

How can I handle errors in a Go query builder?

In Go, you can handle errors in a query builder by checking the error returned from the query execution. Always ensure to return meaningful error messages.

Can you give me an example of error handling in a query builder?

Sure! Here's a simple example:

result, err := db.Query("SELECT * FROM users")
if err != nil {
    log.Fatalf("Query failed: %v", err)
}

What if I want to handle different types of errors?

You can use type assertions to differentiate between error types. For example:

if err != nil {
    if errors.Is(err, sql.ErrNoRows) {
        // handle no rows error
    } else {
        // handle other errors
    }
}

Are there best practices for error handling in Go?

Yes! Some best practices include:

1. Always check for errors.
2. Use custom error types for better context.
3. Log errors appropriately.