Merging tables into New table while retaining information - sql

Question

I apologize in advance as the title is not very descriptive.
I have approximately 40+ tables each with the same exact table layout columns, and data save for one column. I would like to take that column which is not the same across all the tables and merge them into one table. Confusing? Let me illustrate..
SRCTbl01:
ID TYPE COLR1 INSTOCK
-----------------------
1 B RED YES
2 B BLUE YES
3 P GREEN NO
4 B BLACK YES
SRCTbl02:
ID TYPE COLR1 INSTOCK
-----------------------
1 B RED YES
2 B BLUE NO
3 P GREEN YES
4 B BLACK YES
SRCTbl03:
ID TYPE COLR1 INSTOCK
-----------------------
1 B RED YES
2 B BLUE NO
3 P GREEN NO
4 B BLACK NO
RESULT: (Type P to be excluded)
ID TYPE COLR1 SRCTbl01 SRCTbl02 SRCTbl03
----------------------------------------------
1 B RED YES YES YES
2 B BLUE YES NO NO
4 B BLACK YES YES NO
And finally after all that I'd like to make the table look something like this:
INSTOCK Table:
Customer RED BLUE BLACK
---------------------------
SRCTbl1 YES YES YES
SRCTbl2 YES NO YES
SRCTbl3 YES NO NO
I'm not entirely sure whether I can directly manipulate the tables into looking like the final iteration so I thought I should ask how to get it to the first Result as to me it seems simpler.
Thank you for the help, I've spent a full 8 hours on this and have yet to find a way to achieve it so I have come here to ask the experts.
EDIT: To clarify, I have had zero success in achieving the results I illustrated above. I have tried using SELECT .. Union SELECT, and FULL JOINS.
Using this code resulted in duplicates ( I was trying to just get the INSTOCK)
SELECT 01.INSTOCK, 02.INSTOCK, 03.INSTOCK
FROM dbo.SRCTbl01 AS 01, dbo.SRCTbl02 AS 02, dbo.SRCTbl03 AS 03
WHERE 01.TYPE='B'
I tried very many but this is probably the closest I got.

Answer 1

you could do something like that, all in one :
You first flatten with union, then take the max 'instock' for each color by customer (MAX will work as 'YES' > 'NO')
select Customer, MAX(RED) as RED, MAX(BLUE) as BLUE, MAX(BLACK) as BLACK
FROM(
SELECT 'SRCTbl01' as Customer,
CASE WHEN COLR1 = 'RED' then INSTOCK ELSE 'NO' END as RED,
CASE WHEN COLR1 = 'BLUE' then INSTOCK ELSE 'NO' END as BLUE,
CASE WHEN COLR1 = 'BLACK' then INSTOCK ELSE 'NO' END as BLACK
FROM SRCTbl01
WHERE Type <> 'P'
UNION
SELECT 'SRCTbl02' as Customer,
CASE WHEN COLR1 = 'RED' then INSTOCK ELSE 'NO' END as RED,
CASE WHEN COLR1 = 'BLUE' then INSTOCK ELSE 'NO' END as BLUE,
CASE WHEN COLR1 = 'BLACK' then INSTOCK ELSE 'NO' END as BLACK
FROM SRCTbl02
WHERE Type <> 'P'
UNION
SELECT 'SRCTbl03' as Customer,
CASE WHEN COLR1 = 'RED' then INSTOCK ELSE 'NO' END as RED,
CASE WHEN COLR1 = 'BLUE' then INSTOCK ELSE 'NO' END as BLUE,
CASE WHEN COLR1 = 'BLACK' then INSTOCK ELSE 'NO' END as BLACK
FROM SRCTbl03
WHERE Type <> 'P'
) as a
GROUP BY Customer
(You just need to add a CREATE TABLE INSTOCK as <codegiven>)
see SqlFiddle

Answer 2

Using UNION and PIVOT, something like this should do what you want (PIVOT should work on SQL Server 2005 and newer):
SELECT Customer, [Red], [Blue], [Black]
FROM (
SELECT 'SRCTbl01' AS Customer, COLR1, INSTOCK FROM SRCTbl01 WHERE Type <> 'P'
UNION
SELECT 'SRCTbl02' AS Customer, COLR1, INSTOCK FROM SRCTbl02 WHERE Type <> 'P'
UNION
SELECT 'SRCTbl03' AS Customer, COLR1, INSTOCK FROM SRCTbl03 WHERE Type <> 'P'
/* UNION ... */
) AS SRC
PIVOT (
MAX(INSTOCK)
FOR COLR1 IN ([Red], [Blue], [Black])
) AS pvt