如何在C＃中编码小写查询oracle 11g？

Question

In this case, I use Oracle 11g and Devexpress. I have a table named Employee , which has 3 fields (Id, Name, Address). When I show data in Navicat using Oracle Query it worked properly.

SELECT Id, Name, Address FROM Employee 

but when i use that query in C#, the query doesn't work, this my code:

OracleCommand cmd = new OracleCommand();
OracleDataAdapter adp = new OracleDataAdapter(@"SELECT Id, Name, Address FROM Employee", connection.con);
DataSet ds = new DataSet();
adp.Fill(ds, "Employee");
gridControl1.DataSource = ds.Tables[0];

I guess that my oracle query syntax in C# doesn't recognized lowercase syntax. Perhaps must be uppercase.Any suggestion on how to solve this lowercase syntax issue in C#?

Answer 1

试试这个代码：

OracleDataAdapter adp = new OracleDataAdapter(@"SELECT ""Id"", ""Name"", ""Address"" FROM ""Employee"" ", connection.con);

Answer 2

ORA-00904 error means that a column name is invalid or missing. Please correct your query.

Answer 3

ID and NAME are oracle restricted words and shouldn't be used as column names as this can give some problems - maybe that's the case here. To explicitly call those column use "", for example:

SELECT "Id", "Name", Address FROM Employee