OLEDB Oracle（11g）和C＃的SQL无效语法

Question

Here is the query I want to run: 这是我要运行的查询：

SELECT COUNT(*) FROM Users WHERE name = @name AND pwd = @pwd;

My Connection String: 我的连接字符串：

Provider=OraOLEDB.Oracle;User Id = HR; Password = hr;

Specifications: 规格：

Steps I've tried: 我尝试过的步骤：

Error I'm getting: 我得到的错误：

ORA-00936: missing expression ORA-00936：缺少表达

Answer 1

In Oracle, parameters are prefixed with : instead of @ . 在Oracle中，参数以:代替@前缀。 Use that instead: 改用它：

SELECT COUNT(*) FROM Users WHERE name = :name AND pwd = :pwd;