Grouping Codes In Sql

Posted on 2011-02-16
Last Modified: 2012-05-11
Hi All

I have a table in Sql which consists of 293 Analysis Codes ie:


What i need to be able to do is to group them in to certain products so for example

aa12345 and aa123456 need to be grouped and bb123 and cc3456 need to be grouped

so then i could create a bar graph for products showing which type of product has been sold.

so diodes for instance would consist of the aa12345 and the aa123456 anaylysis codes.

I am Using SQL Server 2008 Standard Edition

Any help on how to do this would be great.


Question by:pepps11976
LVL 15

Expert Comment

by:Aaron Shilo
ID: 34906025

if i got you currect you want to order the values in groups not do a simple aggragate but any way.

select analisyscodes from (
                                              select analisyscodes,
                                              case substring(analisyscodes,1,2) when 'aa' then 1
                                                                                                       when 'bb' then 2
                                                                                                       when 'zz' then 24 end ord ) as Tab
order by ord ASC

select count(*) , substring(analisyscodes,1,2)
from table
group by substring(analisyscodes,1,2)
order by count(*) desc

LVL 12

Expert Comment

ID: 34906062
Groping codes sounds much more interesting then Grouping codes.....:)

Do you have a table that contains the relationship between the codes and the groups you want to create?

You stated that :
aa12345 and aa123456 need to be grouped and bb123 and cc3456 need to be grouped
If this is correct and not a typo, then ashilo's response does not quite work for you since it will not group bb... and cc.... codes together.

What is it that determines that bb123 and cc3456 should be grouped together?

Author Comment

ID: 34906085
So at the moment i have this

FROM         dbo.itran

which gives me this


for the above i would need AAMCSAMP,AEROWEIN grouped, And HERTUY and OUTGYU grouped

itried your example but it failed i probably have the syntax incorrect
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LVL 13

Accepted Solution

darren-w- earned 500 total points
ID: 34906086
Perhaps you should create another table called something like product type:

id   name
1   resistors
2   diodes

and then create a new column in you product table called product_type, putting your products in to their type:
id name                product_type
1   aa12345          1
2  aa123456         1
3  bb123                2
4  cc3456              2

then the query would be

select * from  analisyscodes ac
left join product_type pt
on ac. product_type =
where = 1
LVL 15

Expert Comment

by:Aaron Shilo
ID: 34906141

i would have to agree with @darren-w-
if there is no simple vivible corraletion between the values then you will have to create a refference table.

Author Comment

ID: 34906610
Ok Guys i will follow the instructions of Darren-W and see how i get on.

Sorry about the Title.

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