public String GetTableAlias()
        {
            var sqlFromClause = Clauses.First(o => o.Name == "FROM");
            var startIndex    = sqlFromClause.InputText.LastIndexOf(" AS ");

            return(startIndex > 0 ? sqlFromClause.InputText.Substring(startIndex + 4) : "");
        }
        public void ChangeToDelete()
        {
            Validate();
            var sqlClause     = Clauses.FirstOrDefault();
            var sqlFromClause = Clauses.First(o => o.Name == "FROM");

            if (sqlClause != null)
            {
                sqlClause.Name      = "DELETE";
                sqlClause.InputText = sqlFromClause.InputText.Substring(sqlFromClause.InputText.LastIndexOf("AS ") + 3);
            }
        }