SQL Pivot Query

Hi Experts,I am working on a forecasting application to get rid of an Excel spreadsheet and I've come across some trouble. After reading around it looks as if I need to use the Pivot functionality. I have attached a screenshot showing a simplistic version of the spreadsheet and how data is organised and a few results from queries in the database that I am now working on. Looking at that I need help with what the query should be to get the result set as the spreadsheet.  EXCEL SQL VIEW
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takwirirarAsked:
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derekkrommConnect With a Mentor Commented:
Here is an example of how to use a PIVOT query, you should be able to substitute your actual table/column names in easily. The problem with using PIVOT is that you have to specify each pivoted column (i.e. you'll have to enumerate each week). To get around that, you'd have to use dynamic SQL to generate the list of pivots on the fly.

declare @t table (
	p int,
	sku varchar(100),
	d varchar(100),
	customer varchar(100),
	forecast int,
	w int
)

insert into @t
select 111, 'SINGLE', 'LINGETTESx61', 'BES001', 10, 1
union select 111, 'SINGLE', 'LINGETTESx61', 'BES001', 20, 2
union select 111, 'SINGLE', 'LINGETTESx61', 'BES001', 21, 3
union select 111, 'SINGLE', 'LINGETTESx61', 'BES001', 33, 4
union select 113, 'SINGLE', 'NIBLETTESx61', 'BES001', 10, 1

select
	p, sku, d, customer, [1], [2], [3], [4]
from
	(select p, sku, d, customer, forecast, w from @t) as SourceTable
pivot (
	sum(forecast)
	for w in ([1], [2], [3], [4])
) as pvt

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takwirirarAuthor Commented:
Im getting the error

Msg 170, Level 15, State 1, Line 21
Line 21: Incorrect syntax near 'pivot'.
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derekkrommCommented:
can you post the whole query that is giving you the error? when i copy/paste my code i don't get any errors
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takwirirarAuthor Commented:
Hi Derek, this is the code I ended up with, you are correct a copy and pasted yours and didnt get any errors. Im just struggling to interpret it for my data. The error now is

Msg 107, Level 15, State 1, Line 6
The column prefix 'vf' does not match with a table name or alias name used in the query.
Msg 207, Level 16, State 1, Line 7
Invalid column name 'w'.

select
	[Product Code],[SKU],[Description],Customer,Forecast,[Week ID], [1], [2], [3], [4]
from
	(select pr.[Product Code],pr.[SKU],pr.[Description],vf.Customer,vf.forecast,wk.[Week ID] from dbo.[Products] pr LEFT JOIN dbo.[Volume Forecast] AS vf ON pr.[Product Code] = vf.[Product Code] LEFT JOIN dbo.[Weeks] AS wk ON vf.[Week ID] = wk.[Week ID]) as SourceTable
pivot (
	sum(vf.forecast)
	for w in ([1], [2], [3], [4])
) as pvt

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takwirirarAuthor Commented:
Hi Derek, I checked the code again and changed it to the below. Please find the results I get now. New Results
select
	[Product Code],[SKU],[Description],Customer,[Week ID], [1], [2], [3], [4]
from
	(select pr.[Product Code],pr.[SKU],pr.[Description],vf.Customer,vf.forecast,wk.[Week ID] from dbo.[Products] pr LEFT JOIN dbo.[Volume Forecast] AS vf ON pr.[Product Code] = vf.[Product Code] LEFT JOIN dbo.[Weeks] AS wk ON vf.[Week ID] = wk.[Week ID]) as SourceTable
pivot (
	sum(forecast)
	for forecast in ([1], [2], [3], [4])
) as pvt

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takwirirarAuthor Commented:
Hi Derek, I have looked at you example again and saw my mistake please find new code below. I am now getting error;


Msg 207, Level 16, State 1, Line 2
Invalid column name 'Week ID'.

select
	[Product Code],[SKU],[Description],Customer,[Week ID], [1], [2], [3], [4]
from
	(select pr.[Product Code],pr.[SKU],pr.[Description],vf.Customer,vf.forecast,wk.[Week ID] from dbo.[Products] pr LEFT JOIN dbo.[Volume Forecast] AS vf ON pr.[Product Code] = vf.[Product Code] LEFT JOIN dbo.[Weeks] AS wk ON vf.[Week ID] = wk.[Week ID]) as SourceTable
pivot (
	sum(forecast)
	for [Week ID] in ([1], [2], [3], [4])
) as pvt

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takwirirarAuthor Commented:
Hi Derek, I am a bit embarrased! I've looked at your code again and my code below now works. I just need to add the extra complexity now that I have the basics covered. If I find any trouble I will open a related question. Thank you for your help and allowing me to figure this myself.
select
	[Product Code],[SKU],[Description],Customer, [1], [2], [3], [4]
from
	(select pr.[Product Code],pr.[SKU],pr.[Description],vf.Customer,vf.forecast,wk.[Week ID] from dbo.[Products] pr LEFT JOIN dbo.[Volume Forecast] AS vf ON pr.[Product Code] = vf.[Product Code] LEFT JOIN dbo.[Weeks] AS wk ON vf.[Week ID] = wk.[Week ID]) as SourceTable
pivot (
	sum(forecast)
	for [Week ID] in ([1], [2], [3], [4])
) as pvt

Open in new window

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takwirirarAuthor Commented:
Thank you so much Derek. I will add the extra complexity and if I face issues will open a related question.
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derekkrommCommented:
No problem
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