使用SUM和Count函数

Question

我想根据月份和我的查询对总和进行分组，如下所示

SELECT terminal_name, 
sum(case when month(sales_timestamp) = 1 then nc_deposit else 0 end) as 
jan_amount,
count(case when month(sales_timestamp) = 1 then nc_deposit else 0 end) as 
jan_count
FROM dbfastshosted.dbo.fh_mf_new_card_logs cl
INNER JOIN dbfastshosted.dbo.fh_sales_map m on cl.nc_log_id = m.nc_log_id
INNER JOIN dbfastshosted.dbo.fh_sales_logs sl on m.sales_id = sl.sales_id 
INNER JOIN dbfastsconfigdataref.dbo.cdf_terminal_user_account h on 
cl.created_user_id = h.terminal_user_id
INNER JOIN dbfastsconfigdataref.dbo.cdf_terminal t on h.terminal_id = 
t.terminal_id
INNER JOIN dbfastsconfigdataref.dbo.cdf_cuid c on cl.cu_id = c.cu_id
INNER JOIN dbfastshosted.dbo.fh_mf_top_up_logs tu on tu.tu_log_id = 
m.tu_log_id
WHERE YEAR(nc_timestamp)='2017' 
and top_up_status = 1
and (cr_log_id is null or cr_log_id = 0)
GROUP BY terminal_name

 terminal_name     jan_amount       jan_count ....    dec_amount   dec_count 
 ---------------------------------------------------------------------------    

   terminal A         1000            10               50000         500

但是，输出是错误的。由于总和值是正确的，但计数功能不能正常工作。你能告诉我们这些吗？谢谢！

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