RE: How to get number of records (based on a prefix)

["Elvis Budimlic" <ebudimlic@xxxxxxxxxxxxxxxxxxxxxxxxx>]

select item_number, count(distinct substr(site_id,1,1))
from myFile
group by item_number

Hth, Elvis

Celebrating 11-Years of SQL Performance Excellence on IBM i, i5/OS and
OS/400
www.centerfieldtechnology.com


-----Original Message-----
Subject: SQL: How to get number of records (based on a prefix)

Hi list:

I want to use SQL on this one.  I have a file with item numbers and site 
ids.

ITNBR = 15 characters
STID = 3 characters

The prefix of the STID defines the physical location of the site and 
positions 2 and 3 may bring more data about sub-groups of that physical 
location.  I really do not care about the last 2 positions, only on the 
prefix of STID.

The data on the file looks like this:

Item            Site 
Number          ID 
 
NHZF500-051     A1P 
NHZF500-051     E1P 
NHZF500-051     J1D 
NHZF500-051     J1E 
NHZF500-051     J1P 

After the execution of the SQL, I want to have the following results:

NHZF500-051       3

I need to have only one instance of the item number and also I need to 
have the number of times the prefix changed for that item (in this case 
3).

Thanks in advance!

PETER VIDAL