由网友(调皮捣蛋鬼。)分享简介：我试图执行，目前工作在phpMyAdmin的查询，但使用MySqlAdapter在.NET中执行时，它不工作。这是SQL语句。I'm trying to execute a query that currently works in phpMyAdmin but it does not working when ex...

我试图执行，目前工作在phpMyAdmin的查询，但使用MySqlAdapter在.NET中执行时，它不工作。这是SQL语句。

I'm trying to execute a query that currently works in phpMyAdmin but it does not working when executing it in .NET using the MySqlAdapter. This is the Sql statement.

SELECT @rownum := @rownum +1 rownum, t . *
FROM (
  SELECT @rownum :=0
) r, (
  SELECT DISTINCT
    TYPE FROM `node`
  WHERE TYPE NOT IN ('ad', 'chatroom')
)t

这是使用@rownum到数量从我内心的标量查询返回的每个不同行。但是，如果我在.NET中使用它的假设@rownum是一个参数，并抛出一个异常，因为我没有定义它。

It is using the @rownum to number each distinct row that is returned from my inner scalar query. But if I use it in .NET it's assuming that the @rownum is a parameter and throwing an exception because I didn't define it.

using (var sqlConnection = new MySqlConnection(SOURCE_CONNECTION))
{
    sqlConnection.Open();

    MySqlDataAdapter sqlAdapter = new MySqlDataAdapter(SqlStatement, sqlConnection);

    DataTable table = new DataTable();
    sqlAdapter.Fill(table);
    sqlConnection.Close();

    return table;
}

任何想法，我怎么能解决这个问题？或者我可能的方式来获得行号？

Any ideas for how I could get around this problem? Or possible ways for me to get a line number?

推荐答案

我发现这个blog,它告诉，与从不版本的.NET连接器必须添加

I found this blog, which tells, that with never versions of .net Connector you have to add

;Allow User Variables=True

在连接字符串。 比较我太问题How我可以使用MySQL用户定义的变量一个.NET的MySqlCommand？

to the connection string. Compare my SO question How can I use a MySql User Defined Variable in a .NET MySqlCommand?