Conditional Join

Oct 4, 2006

I have three tables ...


tblWine tblSpecialOfferWine tblSpecialOffer
ID Name ID WineID SpecialOfferID ID Name IsLive
===================== ============================ ==========================
1 Mouton Rothschild 1 1 1 1 February Offer 0
2 Lafite Rothschild 2 1 2 2 March Offer 1
3 Chateau Teyssier 3 2 1


... and the current query I am using is the following along with it's result set ...


SELECT
tblWine.ID AS WineID,
tblWine.Name AS WineName,
tblSpecialOffer.ID AS SpecialOfferID,
tblSpecialOffer.Name AS SpecialOfferName

FROM
tblWine
LEFT OUTER JOIN tblSpecialOfferWine ON tblSpecialOfferWine.WineID = tblWine.ID
LEFT OUTER JOIN tblSpecialOffer ON tblSpecialOfferWine.SpecialOfferID = tblSpecialOffer.ID

Results
WineID WineName SpecialOfferID SpecialOfferName
================================================== =========
1 Mouton Rothschild 1 February Offer
1 Mouton Rothschild 2 March Offer
2 Lafite Rothschild 1 February Offer
3 Chateau Teyssier NULL NULL


... but the result set I want is All wines and their associated specials offers but only show details of the offer if the offer is live like so ...


Results
WineID WineName SpecialOfferID SpecialOfferName
================================================== =========
1 Mouton Rothschild 2 March Offer
2 Lafite Rothschild NULL NULL
3 Chateau Teyssier NULL NULL


... I've tried putting where clauses like ...


WHERE tblSpecialOffer.IsLive = 1 OR tblSpecialOffer.IsLive IS NULL


... but then that hides the wines that were on a previously associated on a special offer but is no longer live (see Wine #2).

Any ideas on the query I should be using?

Note: The queries and data above were made off the top of my head so may contain mistakes.

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Conditional Inner Join?

Jan 30, 2007

Im faced with the following design issue..
on my site there are different profiles: a city profile, a restaurant profile and a user profile.
in my DB:City profiles are stored in tbCities cityID int PK shortname nvarchar(50) forumID int FK (...)
Restaurant profiles are stored in tbRests restID int PK shortname nvarchar(50) forumID int FK (...)
User profiles are stored in tbUsers userID int PK shortname nvarchar(50) forumID int FK (...)
as you can see a single ID value (for CityID,restID or userid) might occur in multiple tables (e.g. ID 12 may exist in tbRests and in tbUsers)Each of these profile owners can start a forum on their profile.
forumID in each of the above tables is a FK to the PK in tbForums:forumID  intforumname nvarchar(50) (...)
Now imagine the following:
a site visitor searches ALL forums...say he finds the following forums:ForumID Forumname1 you opinion on politics2 is there life in space?3 who should be the next president of the USA?
a user may want to click on the forum name to go to the profile the forum belongs to.And then there's a problem, because I dont know in which table I should look for the forum ID...OR I would have to scan all tables (tbCities,tbRests and tbUsers) for that specific forumid,which is time-consuming and I dont want that!
so if a user would click on forumID 2 (is there life in space?)
I want to do a conditional inner join for the tablecontainingforumID (which may be tbCities,tbRests or tbUsers)
select tablecontainingforumID.shortname FROM tablecontainingforumID tINNER JOIN tbForums f ON t.ForumID=f.ForumIDwhere f.ForumID=2
I hope my problem is clear..any suggestions are welcome (im even willing to change my DB design if that would increase effectivity)
 

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Apr 27, 2008

Table A
Registation_key discharge_dt

1001 7/15/07
1002 6/4/07
1003 7/30/07


Table B
Registration_key ID end_dt value
1001 879 07/11/07 1
1001 888 07/15/07 2
1002 777 06/01/07 5
1002 778 06/01/07 2
1002 779 06/30/07 6
1003 234 07/31/07 3
1003 235 07/31/07 1
1003 236 08/01/07 7


I am trying to join Table A to Table B using the below log . Table A should have one unique mathincg record from Table B

option 1. Using registration_key and discharge_dt , looking for exact matching date( end_dt) in table B , if there is more than one record that matches then select lowest ID

option 2.if there is no record that matches option1 then, serch for the previous record with end_dt in table A less than end_dt table B. if there is more than one record then select lowest ID

option 3. if there is no record option 2 then search the next record that matches .. discharge_dt greater than end_Dt , if there is more than one record then select lowest Id



so basically, I am looking for an exact matching date in the same registration_key .. if the exact dt doesn't exist looking for the previous record and get the most closer dt and if there is no prvious record than look for next record,.


so the output should look like


output
Registration_key ID end_dt discharge_dt value

1001 888 07/15/07 7/15/07 2
1002 777 06/01/07 6/4/07 5
003 234 07/31/07 7/30/07 3





How can I do this conditional join ?

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Name CEN VID
1. AA 01 11
2. BB 01 11
3. CC 02 12


Table b
CEN VID CName
01 11 ZZZZ
NULL 12 YYY
02 PR XXX

I want to join either on CEN or VID.

1. Join with CEN but If CEN is NULL in table b than the inner join will be VID (automatically in single query)
2. Join with VID but if VID in table b = 'PR' than the inner join will switch to CEN (automatically)

How can I approch this in a single SQL query.

Help me...

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Oct 24, 2006

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Table 1

PropertyId

1
2
3
4
5
6

Table 2

PropertyID PropertyCode PropList ID

1 2 45
3 4 67
5 6 89

Table 3

PropertyID IType

1 3
2 3
3 11
4 11
5 3
6 3

Target Table

PropertyID PropertyCode

1 45
2 45
3 67
4 67
5 89
6 89

Step1: Join Table 1 and Table 3

Steo 2: If Table 1.PropertyId.Itype = 3 Then Join Table 1 and Table 3 on Table1.PropertyID = Table2.PropertyId

Else

Step 3: If Table 1.PropertyId.Itype = 11 Then Join Table 1 and Table 2 on Table1.PropertyID = Table2.PropListId

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Hello,

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Table_Playlist
-----------------
ID (int)
MediaType (char)
MediaId (int)

Table_Audio
-----------------
MediaId (int)

Table_Video
--------------
MediaId (int)


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Apr 27, 2008

Table A
Registation_key discharge_dt

1001 7/15/07
1002 6/4/07
1003 7/30/071



Table B
REgistration_key ID end_dt value
1001 879 07/11/07 1
1001 888 07/15/07 2
1002 777 06/01/07 5
1002 778 06/01/07 2
1002 779 06/30/07 6
1003 234 07/31/07 3
1003 234 07/31/07 1
1003 235 08/01/07 7


I am trying to join Table A to Table B using the below log . Table A should have one unique mathincg record from Table B

option 1. Using registration_key and discharge_dt , looking for exact matching date( end_dt) in table B , if there is more than one record that matches then select lowest ID

option 2.if there is no record that matches option1 then, serch for the previous record with end_dt in table A less than end_dt table B. if there is more than one record then select lowest ID

option 3. if there is no record option 2 then search the next record that matches .. discharge_dt greater than end_Dt , if there is more than one record then select lowest Id



so basically, I am looking for an exact matching date in the same registration_key .. if the exact dt doesn't exist looking for the previous record and get the most closer dt and if there is no prvious record than look for next record,.


so the output should look like


Table B
Registration_key ID end_dt discharge_dt value

1001 888 07/15/07 7/15/07 2
1002 778 06/01/07 6/4/07 2

1003 234 07/31/07 8/1/07 7






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I Have Table Called 'Sales' and 'Voucher',I Need To Show Each Customer ""Dueamount"" Details Based Upon Customer Paid in 'Voucher' Table But One thing I have Not Maintained Transaction History For Customer in 'Sales' Table Means I Have Column named "CreditAmount" in 'Sales' and Column Named "VoucherAmount" in 'Voucher' ,For every transaction I am updating Column named "CreditAmount" in 'Sales', So finally 'Dueamount' Must be calculated according to "VoucherAmount" of customer in 'Voucher' Table....

Sales Table:

BillMasterId BillDate CustomerId NetAmount CreditAmount

26 03/03/2014 101 1000 1000

My Query:
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BillDate BillAmount AmountReceived DueAmount

03/03/2014 1000 0 0
03/03/2014 1000 500 0
03/03/2014 1000 300 0
03/03/2014 1000 200 0

Exact Output:

BillDate BillAmount AmountReceived DueAmount

03/03/2014 1000 0 1000
03/03/2014 1000 500 500
03/03/2014 1000 300 200
03/03/2014 1000 200 0

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the join is like -
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--- First Create two tables
Create table tabA
(cola1 nvarchar(100), cola2 nvarchar(100), cola3 nvarchar(100))
Insert into tabA values (NULL,'A1','A2')
Select * from tabA
create table tabB

[Code] .....

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!ISNULL(HISTORICAL) && !ISNULL(TRANSFORM)

Now I believe the problem is related to spaces in the key field let me explain.

The join field is defined as [char](14) COLLATE SQL_Latin1_General_CP1_CI_AS NULL,

There was an original mismatch between the two tables of VARCHAR(14) & Char(14) but now there both Char(14).

What's interesting is that the few records with Alpha characters correctly does the update but the records with starting numeric data all go down the insert path.

The data of the join columns look like

'308811151 ' - 5 Spaces This Data incorrectly goes to insert path

'TSTRWR02 ' 6 Space This Data correctly goes to update

The data is grouped and sorted by the Key field and the historical and transform column contain a 1 for all records.
while the Doc_nbr which is the key


I tested the join in SQL server and it works with and without the spaces.

From SSIS I also tried RTRIM in the SQL command of the source in addition to substring the first 9 with the right trim and I always received the same results.

I am guessing there is something going on with the not isnull in the conditional split but I can't figure it out if I am missing something or if this is a BUG.


Three paths of data after the merge join and the conditional split

Insert
DOC_NBR,HISTORICAL,TRANSFORM,DOC_NBR_historical
206352185 ,,1,
209900165 ,,1,


Update
DOC_NBR,HISTORICAL,TRANSFORM,DOC_NBR_historical
NEE ,1,1,NEE
New ,1,1,New


Unchanged
DOC_NBR,HISTORICAL,TRANSFORM,DOC_NBR_historical
,1,,0000521096
,1,,0000685216

Any suggestions, am I missing the obvious?

LL











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[code]....

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I'm using SQL Server 2005.



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[Code] ....

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rcd 2. S02

2. Master table TBCODE contain 5 records:

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rcd 2. C2
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GROUP BY C.LOC, B.CODE, A.ITEM ORDER BY C.LOC, B.CODE



When I use Non-ASNI method it work:



SELECT C.LOC, B.CODE, A.ITEM FROM TBITEM A, TBCODE B, TBLOC C

WHERE A.CODE =* B.CODE AND A.LOC =* C.LOC

GROUP BY C.LOC, B.CODE, A.ITEM ORDER BY C.LOC, B.CODE

Result:

LOC CODE ITEM
-----------------------------
S01 C1 NULL
S01 C2 NULL
S01 C3 CAR
S01 C4 TOY
S01 C5 KEY
S02 C1 NULL
S02 C2 CAR
S02 C3 NULL
S02 C4 NULL
S02 C5 NULL


Please Help.

Thanks.






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Code:

SELECT TOP 100 PERCENT dbo.tblPurchaseRaw.Year, dbo.tblPurchaseRaw.Make, dbo.tblPurchaseRaw.Model, dbo.tblPurchaseRaw.ModelType,
dbo.tblPurchaseRaw.Color, dbo.tblvZipCodes.ZIPCode, dbo.tblvZipCodes.City, dbo.tblvZipCodes.County, dbo.tblvZipCodes.State,
dbo.tblvZipCodes.AreaCode, dbo.tblvZipCodes.Region, dbo.tblaAccounts.Name, dbo.tblaAccounts.PhoneOne, dbo.tblaAccounts.AccountID,
dbo.tblPurchaseRaw.AcceptedID, dbo.tblPurchaseRaw.Series, dbo.tblPurchaseRaw.BodyStyle, dbo.tblaAccounts.WebSite,
dbo.tblaAccounts.SalesEmail, dbo.tblPurchaseRaw.EmailTo, dbo.tblPurchaseRaw.PhotoURL, dbo.tblPurchaseRaw.Mileage,
dbo.tblPurchaseRaw.RawID, dbo.tblvRegions.Name AS RegionName, dbo.tblPurchaseRaw.VIN, dbo.tblPurchaseRaw.Style,
dbo.tblPurchaseRaw.StockDate
FROM dbo.tblPurchaseRaw INNER JOIN
dbo.tblaAccounts ON dbo.tblPurchaseRaw.AccountID = dbo.tblaAccounts.AccountID INNER JOIN
dbo.tblvZipCodes ON dbo.tblPurchaseRaw.ZipCode = dbo.tblvZipCodes.ZIPCode INNER JOIN
dbo.tblvRegions ON dbo.tblvZipCodes.Region = dbo.tblvRegions.RegionID
WHERE (CONVERT(char, dbo.tblPurchaseRaw.StockDate, 101) <> '01/01/1900') AND (dbo.tblPurchaseRaw.SoldRawID IS NULL) AND
(dbo.tblPurchaseRaw.AcceptedID <> - 10) AND (dbo.tblPurchaseRaw.AcceptedID <> - 1)
ORDER BY dbo.tblvZipCodes.ZIPCode

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