关于Oracle和SQLServer数据库在.net中拼接数据库语句的不同

1  string sql = "insert into personinfo " +
2 "(id,employeename,employeecode, " +
3 "values(:id,:employeename,:employeecode, " )";
4             OracleParameter[] pars = { new OracleParameter("id",t.Id),
5                                        new OracleParameter(":employeename",t.EmployeeName),
6                                        new OracleParameter(":employeecode",t.EmployeeCode)
7                                       };
8  return OracleDBHelper.ExecuteSql(sql, CommandType.Text, pars);

 1             StringBuilder strSql=new StringBuilder();
 2             strSql.Append("insert into Books(");
 3             strSql.Append("Title,Author,PublisherId)");
 4             strSql.Append(" values (");
 5             strSql.Append("@Title,@Author,@PublisherId)");
 6             strSql.Append(";select @@IDENTITY");
 7             SqlParameter[] parameters = {
 8                     new SqlParameter("@Title", SqlDbType.NVarChar,200),
 9                     new SqlParameter("@Author", SqlDbType.NVarChar,200),
10                     new SqlParameter("@PublisherId", SqlDbType.Int,4)};
11             parameters[0].Value = model.Title;
12             parameters[1].Value = model.Author;
13             parameters[2].Value = model.Publisher.Id ;
14         
15             object obj = DbHelperSQL.GetSingle(strSql.ToString(),parameters);
16             if (obj == null)
17             {
18                 return 1;
19             }
20             else
21             {
22                 return Convert.ToInt32(obj);
23             }