有了这个C#Oracle存储过程参数顺序
PROCEDURE "ADD_BOOKMARK_GROUP" (
"NAME" IN VARCHAR2,
"BOOKMARK_GROUP_ID" IN NUMBER,
"STAFF_ID" IN VARCHAR2,
"MAX_NO" IN INT,
"NUMFOUND" OUT INT,
"NEW_ID" OUT NUMBER) IS
BEGIN
NEW_ID := -1;
SELECT COUNT(*) INTO NUMFOUND FROM BOOKMARK_GROUP_TABLE WHERE STAFF_ID = STAFF_ID;
IF NUMFOUND < MAX_NO THEN
INSERT INTO BOOKMARK_GROUP_TABLE (NAME, BOOKMARK_GROUP_ID, STAFF_ID) VALUES(NAME, BOOKMARK_GROUP_ID, STAFF_ID);
SELECT BGT_SEQUENCE.currval INTO NEW_ID FROM dual;
END IF;
END;
我觉得很有意思,如果我不按顺序添加参数,他们被定义,例如
OracleCommand cmd = new OracleCommand("ADD_BOOKMARK_GROUP", conn);
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.Add(new OracleParameter("NAME", name));
...
cmd.Parameters.Add(new OracleParameter("NEW_ID", OracleDbType.Decimal)).Direction = ParameterDirection.Output;
cmd.Parameters.Add(new OracleParameter("NUMFOUND", OracleDbType.Int32)).Direction = ParameterDirection.Output;
代替
OracleCommand cmd = new OracleCommand("ADD_BOOKMARK_GROUP", conn);
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.Add(new OracleParameter("NAME", name));
...
cmd.Parameters.Add(new OracleParameter("NUMFOUND", OracleDbType.Int32)).Direction = ParameterDirection.Output;
cmd.Parameters.Add(new OracleParameter("NEW_ID", OracleDbType.Decimal)).Direction = ParameterDirection.Output;
通过
cmd.Parameters["NEW_ID"].Value.ToString()
和
cmd.Parameters["NUMFOUND"].Value.ToString()
返回的值被换,虽然运行通过VS2008服务器资源管理器程序返回正确的数据。
这是为什么?
因此,它们按位置传递,虽然名称会很多更有用。 – 2009-06-06 08:56:46