Question

我在sybase中有这个表：

Date                File_name   File_Size   customer    Id
1/1/205 11:00:00    temp.csv    100000      ESPN        1111
1/1/205 11:10:00    temp.csv    200000      ESPN        1122
1/1/205 11:20:00    temp.csv    400000      ESPN        1456
1/1/205 11:30:00    temp.csv    400000      ESPN        2345
1/2/205 11:00:00    llc.csv     100000      LLC         445
1/2/205 11:10:00    llc1.txt    200000      LLC         677
1/2/205 11:20:00    dtt.txt     500000      LLC         76
1/2/205 11:30:00    jpp.txt     400000      LLC         666

我需要提出一个查询，按日汇总这些数据，即月/日/年。

Date        total_file_size number_of_unique_customers number_unique_id
1/1/2015    110,000         1                          4
1/2/2015    120,000         1                          4

我如何在sql查询中执行此操作？我试过这个：

select convert(varchar,arrived_at,110) as Date 
   sum(File_Size), 
   count(distinct(customer)), 
   count(distinct(id)) 
group by Date

似乎没有用，有什么想法吗？

Answer 1

尝试

select 
   convert(varchar,arrived_at,110) as Date,
   SUM(File_Size), 
   count(distinct customer) as number_of_unique_customers, 
   count(distinct id ) as number_unique_id
group by convert(varchar,arrived_at,110)

如何汇总sybase表中的行数据

1 个答案: