Function checkMissing

internal/sql/catalog/table.go:21–29

(err error, missingOK bool)

}

func checkMissing(err error, missingOK bool) error {
	var serr *sqlerr.Error
	if errors.As(err, &serr) {
		if serr.Err == sqlerr.NotFound && missingOK {
			return nil
		}
	}
	return err
}

func (table *Table) isExistColumn(cmd *ast.AlterTableCmd) (int, error) {
	for i, c := range table.Columns {