如何在SQL Server 2005中执行自定义排序

Question

I want to do custom sort by Customercode for tblCustomer table.

CustomerCode consist of (3 char of Surname) + 1 + (PostCode)

Here, 1 will increment if Same Surname and postcode customer found.

For eg ABB12615 , ABB22615

So mainly I want to sort this by

First 3 Letters of Surname + Index + PostCode.

I tried to do in this manner :

ORDER BY CHARINDEX(SUBSTRING(customerCode, 1, 3), customerCode)

but it gives me output like this:

ABB12615
ABB12715
...
...
...
..
.
ABB22615

But I want output in this order:

 ABB12615 

 ABB22615

 ABB12715 

and so on

Is it possible to do?

Answer 1

Based on your expected results you really want to sort on

Surname, postcode, index

which would be

ORDER BY SUBSTRING(customerCode, 1, 3), 
         SUBSTRING(customerCode, 5, 4), 
         SUBSTRING(customerCode, 4, 1)

Answer 2

Try this

SELECT * 
FROM TABLE1
ORDER BY CASE WHEN COlumn1 = 'ABB12615' THEN 1
              WHEN COlumn1 = 'ABB22615' THEN 2
              WHEN COlumn1 = 'ABB12715' THEN 3
              END

Answer 3

This code should sort the way you want.

-- play table
create table #postal
(
  id int identity(1,1) primary key,
  code varchar(16)
)
go

-- remove data
truncate table #postal;
go

-- add data
insert into #postal
values
('ABB12615'),
('ABB22615'),
('ABB12715'),
('AAA29615'),
('AAA19615');
go

-- sort
select 
  * 
from 
  #postal
order by 
  substring(code, 1, 3), 
  substring(code, 5, len(code) - 5),
  substring(code, 4, 1)

Output from the test run.

Answer 4

Yes its possible. Assuming that your CustomerCode format will remain the same, you can use the below code. You need to split the Customercode based on String functions & before sorting index, need to convert them to integer as shown below:

select * from tblCustomer  
ORDER BY
SUBSTRING(Customercode , 1, 3) --SurName 
,CONVERT(INT, SUBSTRING(Customercode , 4, 1)) --Index
,CONVERT(INT,SUBSTRING(Customercode , 5, 5)) --Post Code; You can optionally remove the convert to int function if your post code will contain characters