我有一个返回记录集的Oracle函数。 我向Oracle函数引入了参数,这导致前端代码变得混乱。
这是我的前端代码。
OracleCommand od = oc.CreateCommand();
od.CommandType = System.Data.CommandType.Text;
od.CommandText = " select * from table(pkg_fetchPOInfo.getPORowsTable(:1,:2))";
//od.CommandText = "pkg_fetchPOInfo.getPORowsTable";
//od.CommandType = System.Data.CommandType.TableDirect;
OracleParameter op1 = new OracleParameter();
op1.ParameterName = "1";
op1.OracleDbType = OracleDbType.Varchar2;
op1.Direction = System.Data.ParameterDirection.Input;
op1.Size = 6;
op1.Value = strPONumber;
od.Parameters.Add(op1);
OracleParameter op2 = new OracleParameter();
op2.ParameterName = "2";
op2.OracleDbType = OracleDbType.Varchar2;
op2.Direction = System.Data.ParameterDirection.Input;
op2.Size = 3;
op2.Value = "US";
od.Parameters.Add(op2);
如果我在前端SQLPLUS中执行查询,我会得到一个记录集。 如果我从包和前端代码中删除参数,则此代码有效。
从表中选择*(pkg_fetchPOInfo.getPORowsTable('1007446','US')); - 在SQLPLUS中工作。
从表中选择*(pkg_fetchPOInfo.getPORowsTable()); - 在两个地方工作。
我是否错误地指定了参数?
答案 0 :(得分:0)
包装定义:
CREATE OR REPLACE
PACKAGE TESTP AS
function TESTPIPE(nr in number, nr2 in number) return varchartabletype pipelined;
END TESTP;
CREATE OR REPLACE
PACKAGE BODY TESTP AS
function TESTPIPE(nr in number, nr2 in number) return varchartabletype pipelined AS
CURSOR TESTPIPE_cur
IS
SELECT (level + 1) datam
FROM dual
connect by level < nr;
vtt varchartabletype ;
BEGIN
OPEN TESTPIPE_cur;
LOOP
FETCH testpipe_cur
BULK COLLECT INTO vtt LIMIT nr2;
FOR indx IN 1 .. vtt.COUNT
LOOP
Pipe Row ( vtt( indx ) ) ;
END LOOP;
EXIT WHEN testpipe_cur%NOTFOUND;
END LOOP;
END TESTPIPE;
END TESTP;
.NET代码:
public static void pipeTest()
{
String conString = GetConnectionString();
OracleConnection _conn = new OracleConnection(conString);
_conn.Open();
OracleCommand oCmd = new OracleCommand();
oCmd.CommandText = "begin open :crs for Select * from table(testp.testpipe(:nr,:nr2)); end;";
oCmd.CommandType = CommandType.Text ;
oCmd.Connection = _conn;
OracleParameter crs = new OracleParameter();
crs.OracleDbType = OracleDbType.RefCursor;
crs.Direction = ParameterDirection.Output;
crs.ParameterName = "crs";
oCmd.Parameters.Add(crs);
OracleParameter nr = new OracleParameter();
nr.OracleDbType = OracleDbType.Int64;
nr.Direction = ParameterDirection.Input ;
nr.ParameterName = "nr";
nr.Value = 25;
oCmd.Parameters.Add(nr);
OracleParameter nr2 = new OracleParameter();
nr2.OracleDbType = OracleDbType.Int64;
nr2.Direction = ParameterDirection.Input;
nr2.ParameterName = "nr2";
nr2.Value = 10;
oCmd.Parameters.Add(nr2);
using (OracleDataReader MyReader = oCmd.ExecuteReader())
{
int ColumnCount = MyReader.FieldCount;
// get the data and add the row
while (MyReader.Read())
{
String s = MyReader.GetOracleValue(0).ToString();
Console.WriteLine(string.Format("i={0}", s));
}
}
Console.ReadLine();
}