/// <summary>
/// 查询单个值的方法
/// </summary>
/// <param name="sql"></param>
/// <returns>单个值</returns>
public static object RunSQLReturnVal(string sql)
{
if ("odbc".Equals(dbType))
{
return(DBAccessOfOdbc.RunSQLReturnVal(sql));
}
else if ("oledb".Equals(dbType))
{
return(DBAccessOfOleDb.RunSQLReturnVal(sql));
}
else if ("oracle9i".Equals(dbType))
{
return(DBAccessOfOracle9i.RunSQLReturnVal(sql));
}
else if ("sql".Equals(dbType))
{
return(DBAccessOfSql.RunSQLReturnVal(sql));
}
else if ("sqlite".Equals(dbType))
{
return(DBAccessOfSQLite.RunSQLReturnVal(sql));
}
else
{
return(null);
}
}
