You’ve declared the function GetDBConnection()
to return no arguments.
func GetDBConnection() {
You have to tell Go the type of the argument you intend to return:
func GetDBConnection() *sqlx.DB {
As for determining the type, I just went to look at the source code. You could also look at the documentation on godoc.org, which is auto-generated from publicly available Go packages.
8
solved Too many arguments to return