Question

我有一个查询，检查用户是否存在于数据库中。当我通过OracleCommand检查此查询时，会导致异常，并表示command未正确结束。

以下是查询：

select count(*) as user_exists
 from users
  where upper(u_name) = upper('name')
  and u_password = DB_PKG_ACCESS.f_encrypt('pass')
  and (expiration_date is null or (expiration_date is not null and trunc(expiration_date) >= trunc(sysdate)));

这是command：

OracleCommand cmd = new OracleCommand("select count(*) as user_exists from users where upper(u_name) = upper('name')"
       +" and u_password = DB_PKG_ACCESS.f_encrypt('pass')"
       +" and(expiration_date is null or(expiration_date is not null and trunc(expiration_date) >= trunc(sysdate)));", con);
cmd.Parameters.Add(new OracleParameter("name", textBox1.Text));
cmd.Parameters.Add(new OracleParameter("pass", textBox2.Text));

我哪里错了？

Answer 1

尝试从OracleCommand中的语句末尾取出分号，如下所示

OracleCommand cmd = new OracleCommand("select count(*) as user_exists from users where upper(u_name) = upper('name')"
       +" and u_password = DB_PKG_ACCESS.f_encrypt('pass')"
       +" and(expiration_date is null or(expiration_date is not null and trunc(expiration_date) >= trunc(sysdate)))   ", con);

这对我来说一直是个问题......

HTH

Answer 2

尝试在查询中删除分号（Command对象自动结束）

OracleCommand cmd = new OracleCommand("select count(*) as user_exists from users where upper(u_name) = upper('name')"
   +" and u_password = DB_PKG_ACCESS.f_encrypt('pass')"
   +" and(expiration_date is null or(expiration_date is not null and trunc(expiration_date) >= trunc(sysdate))); <==== Here remove it", con);

OracleCommand未正确结束

2 个答案: