Question

我正在尝试从SQL Server访问存储在MySQL上的数据。我已按照本网站上的说明进行操作 http://www.sqlservercentral.com/Forums/Topic340912-146-1.aspx

我创建链接服务器没有问题，但当我尝试使用OPENQUERY选择数据时，我收到以下错误

Msg 7357, Level 16, State 2, Line 1
Cannot process the object "
SELECT
CAST(t.name AS CHAR) AS team_name,
CAST(TRIM(REPLACE(CONCAT(su.first_name, " ", su.middle_name , " ", su.last_name), " ", " ")) AS CHAR) AS fullname,
CAST(su.login_user AS CHAR) AS username,
CAST(t.billing_department_id AS UNSIGNED) AS billing_dept_id
FROM my_table.users AS su
INNER JOIN my_table.teams AS t ON t.team_id = su.team_id
WHERE client_id = 1 ". The OLE DB provider "MSDASQL" for linked server "SQLSERVER_1" indicates that either the object has no columns or the current user does not have permissions on that object.

这是我的查询

SELECT * FROM OPENQUERY(SQLSERVER_1, '
SELECT
CAST(t.name AS CHAR) AS team_name,
CAST(TRIM(REPLACE(CONCAT(su.first_name, " ", su.middle_name , " ", su.last_name), " ", " ")) AS CHAR) AS fullname,
CAST(su.login_user AS CHAR) AS username,
CAST(t.billing_department_id AS UNSIGNED) AS billing_dept_id
FROM my_table.users AS su
INNER JOIN my_table.teams AS t ON t.team_id = su.team_id
WHERE client_id = 1 ') AS su

有人可以告诉我这有什么问题，我该怎么做才能解决这个错误？

由于

Answer 1

我终于解决了这个问题。解决方案非常愚蠢，但我不相信它是解决方案。解决方案是简单删除MySQL select和单引号之间的空格。因此它变为＆＃39; SELECT CAST（t.name AS CHAR）AS team_name，........

Answer 2

我遇到了同样的问题，但直到我们升级到MySQL ODBC 5.3驱动程序之后才这样。由于我们在新行中有很多现有查询，因此我花了一些时间来寻找修复。原来问题是由使用unicode版本的驱动程序引起的。一旦我切换到ANSI，问题就消失了。

我无法在SQL Server中创建到MySQL的链接服务器

2 个答案: