Question

Need a JOIN to return additional rows

Asked by: fjkilken

Hi
I have a part number which has usage/good on-hand/defective on-hand etc... data in DUBLIN depot for a certain week, but there is no usage/good on-hand/defective on-hand etc for the part in the other 2 depots (TURKEY, GERMANY)
I need a query that will extract the usage data for the DUBLIN depot, but that will also return 2 lines for the additional depots, even though they may not have any usage/good on-hand/defective on-hand .
as an example of what I need:

PART NUM   DEPOT       USAGE QTY GOH QTY    DOH QTY
abc123        DUBLIN       25                   65              12
abc123        TURKEY     0                      0                 0
abc123        GERMANY  0                     0                 0

ie; I always need 3 rows of data returned per part number (corresponding to the 3 depots)

I was trying CROSS JOIN to a list of the 3 depots, but this was pulling back data as shown below:

PART NUM   DEPOT       USAGE QTY GOH QTY    DOH QTY
abc123        DUBLIN       25                   65              12
abc123        TURKEY     25                   65              12
abc123        GERMANY  25                   65              12


thanks

Fergal

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Asked On
2008-12-03 at 11:38:03ID23954425
Tags

microsoft

,

sql server

,

2000

Topics

SQL Query Syntax

,

SQL Server 2005

Participating Experts
4
Points
500
Comments
5

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Answers

 

by: Sharath_123Posted on 2008-12-03 at 11:48:37ID: 23089377

Whats the data in your table and your desired result?

 

by: DanielWilsonPosted on 2008-12-03 at 11:52:25ID: 23089406

Select Part.PartNum, Depot.DepotName, DepotPart.UsageQty, DepotPart.DOHQty, DepotPart.GOHQty
From Depot Left Join DepotPart on Depot.DepotID = DepotPart.DepotID
Left Join Part on Part.PartNum = DepotPart.PartNum


this is based on some guesses about table structure ...

 

by: folderolPosted on 2008-12-03 at 14:49:50ID: 23091140

You need a list of all the depots, and a list of all the partnumbers, and a list of the weekly data fields.

You can cross join the depots to the partnumbers, which will give you a partnumber list in triplicate, as if each part exists in every depot.  Then, left join this to the table(s) of weekly data,
and you will have your desired report.  Where no weekly data exists for a part in a certain depot, the report will have nulls.

if you don't have the required lists in separate tables, you can run preliminary select distinct queries to build temp tables of all the possible combinations of depots and parts that could exist in the weekly transaction tables.  We can help with that if you give more info on your db organization.

 

by: mark_willsPosted on 2008-12-03 at 19:25:48ID: 23092452



cross join is correct to get the relationships or, maybe could use depot directly and join out from there...


Select Part.PartNum, Depot.DepotName, ST.UsageQty, ST.DOHQty, ST.GOHQty
From
(select distinct partnum, s.depotid Stock_Transactions S cross join Depot D where s.depotid = 'Dublin' and d.depotid in ('Dublin','Germany','Turkey') ) StkDepot
Left Join Stock_Transactions ST on ST.partnum = StkDepot.partnum and ST.depotid = StkDepot
Left Join Depot on Depot.DepotID = ST.DepotID
Left Join Part on Part.PartNum = ST.PartNum

and probably want to do a group by or range the selection from that point.....

 

by: fjkilkenPosted on 2008-12-04 at 00:28:30ID: 23093405

thanks for that Mark and folderol
I believe both your answers get me to the result I need, and this was a method I had been contemplating,
so I will split the points

20120131-EE-VQP-002

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