ADO 连 Oracle 中有到用返回游标的话,要加上 Extended Properties=PLSQLRSet=1 在连接串里. 如: 在 VB 里返回游标的例子: PL/SQL 代码: CREATE OR REPLACE PACKAGE "PKG_TEST" AS TYPE myrcType IS REF CURSOR; FUNCTION get(strSQL VARCHAR) RETURN myrcType; END pkg_test;CREATE OR REPLACE PACKAGE BODY "PKG_TEST" AS FUNCTION get(strSQL IN VARCHAR) RETURN myrcType IS rc myrcType; BEGIN OPEN rc FOR strSQL; RETURN rc; END get; END pkg_test;VB 代码: Private Sub Command1_Click() On Error GoTo cursorErr: Dim cnn As New ADODB.Connection Dim rst As New ADODB.Recordset Dim cmd As New ADODB.Command
如: 在 VB 里返回游标的例子:
PL/SQL 代码:
CREATE OR REPLACE PACKAGE "PKG_TEST" AS
TYPE myrcType IS REF CURSOR;
FUNCTION get(strSQL VARCHAR) RETURN myrcType;
END pkg_test;CREATE OR REPLACE PACKAGE BODY "PKG_TEST" AS
FUNCTION get(strSQL IN VARCHAR) RETURN myrcType IS
rc myrcType;
BEGIN
OPEN rc FOR strSQL;
RETURN rc;
END get;
END pkg_test;VB 代码:
Private Sub Command1_Click()
On Error GoTo cursorErr:
Dim cnn As New ADODB.Connection
Dim rst As New ADODB.Recordset
Dim cmd As New ADODB.Command
cnn.ConnectionString = "Provider=OraOLEDB.Oracle.1;Password=tiger;Persist Security Info=True;User ID=scott;Data Source=oraAny;Extended Properties=PLSQLRSet=1"
cnn.Open
With cmd
.ActiveConnection = cnn
.CommandType = adCmdText
.CommandText = "{CALL scott.pkg_test.get(?)}"
.Parameters.Append .CreateParameter("strSQL", adVarChar, adParamInput, 100, "SELECT * FROM TAB")
End With
rst.CursorType = adOpenStatic
rst.LockType = adLockReadOnly
Set rst.Source = cmd
rst.Open
MsgBox rst.RecordCount Set rst = Nothing
Set cmd = Nothing
Exit SubcursorErr:
Set cmd = Nothing
Set rst1 = Nothing
MsgBox Err.Description
End Sub