Golang postgres error constants?

Question

I\'m trying to delete a database using the postgres driver (lib/pq) by doing a:

db.Exec(\"DROP DATABASE dbName;\")

But I\'d like to do a differe

Answer 1

The lib/pq package may return errors of type *pq.Error, which is a struct. If it does, you may use all its fields to inspect for details of the error.

This is how it can be done:

if err, ok := err.(*pq.Error); ok {
    // Here err is of type *pq.Error, you may inspect all its fields, e.g.:
    fmt.Println("pq error:", err.Code.Name())
}

pq.Error has the following fields:

type Error struct {
    Severity         string
    Code             ErrorCode
    Message          string
    Detail           string
    Hint             string
    Position         string
    InternalPosition string
    InternalQuery    string
    Where            string
    Schema           string
    Table            string
    Column           string
    DataTypeName     string
    Constraint       string
    File             string
    Line             string
    Routine          string
}

The meaning and possible values of these fields are Postres specific and the full list can be found here: Error and Notice Message Fields