Only table-valued functions can be used in the FROM clause.
解决办法：
If it‘s a scalar function, use this:
SELECT * FROM OPENQUERY(LinkedServer, ‘SELECT [db name].dbo.[function name](param1, param2)‘)
开始是这样调用的：
select * from [LinkedServer].[db name].dbo.[function name](param1, param2)
原因：
Only table-valued functions can be used in the FROM clause.
解决办法：
If it‘s a scalar function, use this:
SELECT * FROM OPENQUERY(LinkedServer, ‘SELECT [db name].dbo.[function name](param1, param2)‘)
远程访问Function时报错Remote table-valued function calls are not allowed.
原文：http://www.cnblogs.com/johnblogs/p/6866544.html