package postgres import ( "context" "database/sql" ) // dbConn is an interface that abstracts the *sql.DB, *sql.Tx and *sql.Conn types. type dbConn interface { ExecContext(ctx context.Context, query string, args ...interface{}) (sql.Result, error) PrepareContext(ctx context.Context, query string) (*sql.Stmt, error) QueryContext(ctx context.Context, query string, args ...interface{}) (*sql.Rows, error) QueryRowContext(ctx context.Context, query string, args ...interface{}) *sql.Row }