How to find out about the success of the sql query in golang?

Question

MySQL

How to find out about the success of the sql query in golang? (DB-Mysql) The table has a unique index on one of the fields.
Let's say the user adds data, and this index already exists. You need to find out somehow that the Insert request did not work. How to do this?

Answer 1

RTFM
https://github.com/go-sql-driver/mysql/wiki/Examples:

_, err = stmtIns.Exec(i, (i * i)) // Insert tuples (i, i^2)
if err != nil {
    panic(err.Error()) // proper error handling instead of panic in your app
}