github.com/jackc/pgx/v4.dbSavepoint.QueryFunc (method)

one use

	github.com/jackc/pgx/v4 (current package)
		tx.go#L407: func (sp *dbSavepoint) QueryFunc(ctx context.Context, sql string, args []interface{}, scans []interface{}, f func(QueryFuncRow) error) (pgconn.CommandTag, error) {