Query gives me some error:
查询给了我一些错误:
Msg 156, Level 15, State 1, Line 4 Incorrect syntax near the keyword 'from'. Msg 156, Level 15, State 1, Line 9 Incorrect syntax near the keyword 'group'. Msg 1
阅读背景：
如何添加用户定义的函数参数？
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