Group By After Outer Join - Getting Duplicate Or Null Values
Oct 18, 2013
I've got 2 tables of towns. I'm using outer join because i need all the town from both tables. However I'm sometimes getting duplicates.
My query
select a.town, b.town
from a
outer join b on a.town = b.town
group by a.town, b.town
How to stop getting null values?
portsmouth null
portsmouth portsmouth
southampton southampton
null southampton
TownA null
null TownB
I'm looking for distinct values like this:
portsmouth portsmouth
southampton southampton
TownA null
null TownB
etc...
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Dec 12, 2007
Hi,
In my database there are following two tables with sample data:
Customer_Product
=================
Branch Customer ProductID
B1 C1 P1
B1 C1 P2
B1 C2 P1
B2 C3 P2
B2 C3 P3
Product
=================
ID Name
P1 Prod 1
P2 Prod 2
P3 Prod 3
I need to write a query which can display the sum of each product for each branch. The required output is as follow:
Required Output
================
Branch Product Total
B1 P1 2
B1 P2 1
B1 P3 0
B2 P1 0
B2 P2 1
B2 P3 1
The Query I tried is:
SELECT Branch, ProductID, COUNT(*) as Total
FROM Customer_Product cp
RIGHT OUTER JOIN Product pd ON cp.ProductID=pd.id
GROUP BY Branch, ProductID
ORDER BY Branch, ProductID
But Right outer join act on Table level instead of Group. How can i generate desired output by keeping in mind that both Branch and Product are dynamic?
Thanks.
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Dec 31, 2007
Need some join help...
Table 1 - Modules:
ID | Name
1 | A
2 | B
3 | C
Table 2 - CompanyModules
ModuleID | CompanyID
1 | 1
2 | 1
3 | 1
1 | 2
I'd like to return the following result set:
CompanyModules.CompanyID | Modules.Name | Present
1 | A | True
1 | B | True
1 | C | True
2 | A | True
2 | B | False
2 | C | False
What would be the query for this? Thanks.
Edit: This is the query I have tried:
select CompanyModules.CompanyID, Modules.Name, count(Modules.ID) as Present from
CompanyModules RIGHT outer Join Modules on CompanyModules.ModuleID = Modules.ID
group By CompanyModules.CompanyID, Modules.Name
Order by CompanyID
However, it only returns a partial result set:
CompanyModules.CompanyID | Modules.Name | Present
1 | A | 1
1 | B | 1
1 | C | 1
2 | A | 1
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Aug 17, 2015
I have this View and want to also see Clubs that do not have current memberships.I have the IS NULL but not seeing the Clubs that do NOT have memberships. attribute.PersonMembership is a SQL table that has membership information.
SELECT dbo.v060ClubOfficersPresOrNot.ClubNo, dbo.v060ClubOfficersPresOrNot.SortName, dbo.v060ClubOfficersPresOrNot.ClubName,
dbo.v060ClubOfficersPresOrNot.BSProgram, dbo.v060ClubOfficersPresOrNot.ClubSection, dbo.v060ClubOfficersPresOrNot.Code,
RTRIM(attribute.PersonMembership.InvoiceNumber) AS InvNo, dbo.v060ClubOfficersPresOrNot.President, dbo.v060ClubOfficersPresOrNot.Email,
[Code]...
The "PersonMembership" has all the membership records from 2015 through 2019 of membertypeid 1-4 for the sampling.Since the syntax used in Access do not carry over without modifications to SQL, SQL syntax to make it work in SQL.And if you know the proper SQL syntax for "Between Year(Date())+IIf(Month(Date())>=7,1,0) And Year(Date())+IIf(Month(Date())>=7,1,0)+4" instead of what I currently have in SQL, that would be wonderful.
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Feb 28, 2008
Hello,
please, is there SO who can help me resolve my problem? I'm developing a simple ASP application.
I have 2 tables - T_Employees , P_Users
T_Employees = all employees of a company, P_Users = users of the system, P_Users is sub-set of T_Employees, PERNR is link
I need result of:
SELECT e.Name, u.Permitions FROM T_Employees AS e LEFT OUTER JOIN P_Users AS u ON e.PERNR = u.PERNR and (e.PERNR = 1) .
If an employee with PERNR = x is not a user (is not in P_Users) , I expect to recieve 1 row with u.Permitions=null
But what happens!
If I put this query to Management studio, I recieve 1 row (as I expect). Than I run exactly the same query in ASP page and it doesn't return any row (recordcount=0).
And what is even more strange - it worked. Suddenly I met this problem in all my pages and I can't find where the problem consist in. I always take SQL query from ASP VB into query analyzer and it works. But not on my pages.
It looks like the ASP works with different settings or as QA corrects my query before execution.
I'm totaly confused by this. Have you ever met ST like this?
Thanks for your advice
Petr
petr DOT chary@gmail DOT c o m
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Mar 30, 2015
In Outer join, I would like to add the outer columns that don't exist in the right table for each order number. So currently the columns that don't exist in the right table only appear once for the entire set. How can I go about adding PCity, PState to each order group, so that PCity and PState would be added as null rows to each group of orders?
if OBJECT_ID('tempdb..#left_table') is not null
drop table #left_table;
if OBJECT_ID('tempdb..#right_table') is not null
drop table #right_table;
create table #left_table
[Code]....
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Jun 2, 2004
I have two tables:
1. tblProducts
columns: ProductID, ProductName
2. tblProductCodes
columns: ProductID, CustomerID, ProductCode
The 2nd table is for storing product codes for customers, in other words, one product can have different ProductCode for different customers. But some customers do not have ProductCode for a ProductID.
I want to create a query to return all the Products and its ProductCode (null is valid) for a specific customer.
I tried:
SELECT dbo.tblProductCodes.ProductCode, dbo.tblProductCodes.CustomerID,
dbo.tblProducts.ProductName,
dbo.tblProducts.ProductID
FROM dbo.tblProducts LEFT OUTER JOIN
dbo.tblProductCodes ON dbo.tblProducts.ProductID = dbo.tblProductCodes.ProductID
WHERE dbo.tblProductCodes.CustomerID = 2
But the query left out all products that does not have ProductCode value in tblProductCodes table for CustomerID = 2. I want all the ProductName returned from query and render null or empty string for ProductCode value if the code does not exist in tblProductCodes table for the customer.
Any help is highly appreciated.
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Sep 25, 2015
I have tried all possible combinations of changing this. But was not able to make the results tally.I am giving you a part of the query, there are others queries involving 4 tables which are based on this same temporary table query.
SELECT c.juris_id, b.jrnl_mo_yr
FROM a_trueup a,
#t_mths b, r_rj c
WHERE a.rlzd_mo_yr
=* b.jrnl_mo_yr
AND
a.juris_id
=* c.juris_id
[code]....
I tried using left outer join as mentioned in blogs but got a different result (14 rows).I also used set null off/on options but no luck ..
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Apr 10, 2008
Hi all,
I have run into a problem that I am stuck on. I have 3 tables lets call them a,b, and c. What I want to do is left outer join a with b on a common value, then replace any null values in this result with a default value, and then left outer join table c on the previously joined table (on the columns that I just replaced certain values on).
please help!
Thanks
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Apr 26, 2002
Take the following scenario:
We have two tables that have somewhat of a parent-child relationship. We are trying to use a SQL-92 outer join that returns the same results as a TSQL *= outer join. The difficulty we are having is that some of the parent records do not have any corresponding child records, but we still want to see those parent records with 0 (zero) for the count. How can we accomplish this with a SQL-92 compliant join (if it is even possible)? In the query results below, we would like the first set of results.
Thanks in advance for any help.
-David Edelman
Test script below, followed by results
===========================================
create table parent (p_id int NOT NULL)
go
create table child (p_id int NOT NULL, c_type varchar(6) NULL)
go
insert parent values (1)
insert parent values (2)
insert parent values (3)
insert parent values (4)
insert parent values (5)
insert parent values (6)
insert parent values (7)
insert parent values (8)
insert parent values (9)
insert parent values (10)
go
insert child values (1, 'AAA')
insert child values (1, 'BBB')
insert child values (1, 'CCC')
insert child values (2, 'AAA')
insert child values (4, 'AAA')
insert child values (4, 'DEF')
insert child values (4, 'AAA')
insert child values (4, 'BBB')
insert child values (5, 'AAA')
insert child values (5, 'AAA')
insert child values (6, 'AAA')
insert child values (7, 'AAA')
insert child values (7, 'BBB')
insert child values (7, 'CCC')
insert child values (7, 'DDD')
insert child values (10, 'AAA')
insert child values (10, 'CCC')
go
select p.p_id, count(c.p_id) as num_rows
from parent p, child c
where p.p_id *= c.p_id
and c.c_type in ('AAA', 'BBB')
group by p.p_id
select p.p_id, count(c.p_id) as num_rows
from parent p left outer join child c on p.p_id = c.p_id
where c.c_type in ('AAA', 'BBB')
group by p.p_id
=========================================
Results:
(T-SQL *= outer join)
p_id num_rows
----------- -----------
1 2
2 1
3 0
4 3
5 2
6 1
7 2
8 0
9 0
10 1
(SQL-92 outer join)
Warning: Null value eliminated from aggregate.
p_id num_rows
----------- -----------
1 2
2 1
4 3
5 2
6 1
7 2
10 1
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Oct 2, 2000
After adding a Unique constraint to a database I cannot add more than one record with a null value for the constrained field. I've tried both adding the constraint to an empty table as well as a table with multiple null values already in the subject field; both efforts have failed.
According to BOL SQL-7 allows Unique Constraints on fields with Null values. Am I missing a step? I do need to allow nulls in the field yet ensure that when there is a non-null value it is unique.
The SQL statement I've used is: ALTER TABLE tbl_MasterUIC ADD CONSTRAINT uniquesamplenbr UNIQUE NONCLUSTERED (samplenbr)
Thanks for any and all suggestions
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Oct 1, 2015
My data is like below:
ClassId ClassName StudentId Subject SubjectId
1 ESL 12 English 20
1 ESL 13 Science 30
1 ESL 12 Social 40
1 ESL 12 Maths 50
Required output: parameters are Subject column values
ClassId ClassName TotalStudents SubjectIds
1 ESL 1 20, 40, 50
1 ESL 1 30
When one student takes multiple subjects then count student only once, so in the above data 12 is one student id takes multiple subjects so counted only once. TotalStudents value is 1
I did write below query:
Declare @subjectids string
set @subjectids = '20,30,40,50'
-- will split @subjectids and store in temp table
select classname, classid, Count(Distinct StudentId)
from mytable
where SubjectsIds in @subjectIds
group by ClassId, ClassName, SubjectId,
but it gives me below output:
ClassId ClassName TotalStudents SubjectIds
1 ESL 1 20
1 ESL 1 30
1 ESL 1 40
1 ESL 1 50
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Dec 19, 2007
Hello Everyone
I've created a report with a simple dataset that is similar to this
City , RequestID, Request Amount, ClaimID, ClaimAmount
El Monte 791 52,982.00 2157 41,143.75
El Monte 3691 11,838.00 3140 8,231.14
El Monte 3691 11,838.00 3141 990.00
El Monte 3691 11,838.00 3142 2,615.00
So I group by City, RequestID. On the first group I specified the expression to be City and in the header I list the city and in the footer I list the sum of Request amount. On the second group I specified the group by Request so in the header I placed requestID and on the footer I placed Request Amount. I set request information to hide the duplicates and I even add =Sum(Fields!RequestApprovedGrandTotal.Value,"GroupByRequestID") the scope of the group. But this is what I get:
For requestID = 3691 for Request Amount is 35,514.00 not 11,838.00. All the claim sums are correct and they are located on the detail row.
I've read that a work around is to create multiple dataset but I honestly believe that something as simple as this should work on the reporting server 2000. So I've come to the conclusion that I must be doing something wrong. Can someone give me a hand on this. Thanks.
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May 10, 2010
what is difference between outer apply and outer join ,both return rows from left input as well as right input . isnt it?
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Jul 19, 2006
Hi all
My query has some inner joins to some tables. And problem is when any ON clause get null as value, the correspondent record is not displayed.
SELECTTableA.A, TableB.AFROM TableAINNER JOIN TableB ON TableA.A = TableB.A
What I did try:
SELECTTableA.A, TableB.AFROM TableAINNER JOIN TableB ON TableA.A = TableB.A OR TableA.A IS NULL
(but It generates redundant values from TableB)
I need to show all values even that value from Tablea is null
Thank a lot for any help
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May 16, 2005
If I try to run the code below, and even one of the values in the INNER
JOIN statements is NULL, the DataReader ends up with zero rows.
What I need is to see the results even if one or more of INNER JOIN
statements has a NULL value. For example, if I want info on
asset# 2104, and there's no value in the DriverID field, I need the
rest of the data to display and just have the lblDriverName by
blank. Is that possible?
<code>
Sub BindSearchGrid()
Dim searchUnitID As String
Dim searchQuery As String
searchUnitID = tbSearchUnitID.Text
lblIDNum.Text = searchUnitID
searchQuery = "SELECT * FROM Assets " & _
"INNER JOIN Condition ON Condition.ConditionID = Assets.ConditionID " & _
"INNER JOIN Drivers ON Drivers.DriverID = Assets.DriverID " & _
"INNER JOIN Departments ON Departments.DepartmentID = Assets.DepartmentID " & _
"INNER JOIN AssetCategories
ON AssetCategories.AssetCategoryID = Assets.AssetCategoryID " & _
"INNER JOIN Store ON
Store.[Store ID] = Assets.StoreID WHERE RTRIM(Assets.[Unit ID]) = '"
& searchUnitID & "'"
Dim myReader As SqlDataReader
myReader = Data.queryDB(searchQuery)
While myReader.Read
If
Not IsDBNull(myReader("Store Name")) Then lblStrID.Text =
myReader("Store Name")
If
Not IsDBNull(myReader("AssetCategory")) Then lblAsstCat.Text =
myReader("AssetCategory")
If
Not IsDBNull(myReader("Condition Description")) Then lblCondID.Text =
myReader("Condition Description")
If
Not IsDBNull(myReader("DepartmentName")) Then lblDepID.Text =
myReader("DepartmentName")
If
Not IsDBNull(myReader("Unit ID")) Then lblUnID.Text = myReader("Unit
ID")
If
Not IsDBNull(myReader("Year")) Then lblYr.Text = myReader("Year")
If
Not IsDBNull(myReader("Make")) Then lblMk.Text = myReader("Make")
If
Not IsDBNull(myReader("Model")) Then lblMod.Text = myReader("Model")
If
Not IsDBNull(myReader("Mileage")) Then lblMile.Text =
myReader("Mileage")
If
Not IsDBNull(myReader("Vin Number")) Then lblVinNum.Text =
myReader("Vin Number")
If
Not IsDBNull(myReader("License Number")) Then lblLicNum.Text =
myReader("License Number")
If
Not IsDBNull(myReader("Name")) Then lblDriverName.Text =
myReader("Name")
If
Not IsDBNull(myReader("DateAcquired")) Then lblDateAcq.Text =
myReader("DateAcquired")
If
Not IsDBNull(myReader("DateSold")) Then lblDtSld.Text =
myReader("DateSold")
If
Not IsDBNull(myReader("PurchasePrice")) Then lblPrPrice.Text =
myReader("PurchasePrice")
If
Not IsDBNull(myReader("NextSchedMaint")) Then lblNSM.Text =
myReader("NextSchedMaint")
If
Not IsDBNull(myReader("GVWR")) Then lblGrVWR.Text = myReader("GVWR")
If
Not IsDBNull(myReader("GVW")) Then lblGrVW.Text = myReader("GVW")
If
Not IsDBNull(myReader("Crane Capacity")) Then lblCrCap.Text =
myReader("Crane Capacity")
If
Not IsDBNull(myReader("Crane Certification")) Then lblCrCert.Text =
myReader("Crane Certification")
If
Not IsDBNull(myReader("Repair Cost")) Then lblRepCost.Text =
myReader("Repair Cost")
If
Not IsDBNull(myReader("Estimate Replacement")) Then lblEstRep.Text =
myReader("Estimate Replacement")
If
Not IsDBNull(myReader("SalvageValue")) Then lblSalVal.Text =
myReader("SalvageValue")
If
Not IsDBNull(myReader("CurrentValue")) Then lblCurVal.Text =
myReader("CurrentValue")
If
Not IsDBNull(myReader("Comments")) Then lblCom.Text =
myReader("Comments")
If
Not IsDBNull(myReader("Description")) Then lblDesc.Text =
myReader("Description")
End While
End Sub</code>
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Apr 30, 2008
Hello
Can any one tell me the difference between Cross Join, inner join and outer join in laymans language
by just taking examples of two tables such as Customers and Customer Addresses
Thank You
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Oct 17, 2007
Hello,
I have this INNER JOIN that is fine to show all possible combinations. But I need to show only rows that have one or more Null values in tbIntersect.
Should I use nested LEFT JOINT? How?
This is the SQL statement:
sSQL = "SELECT DISTINCT tbCar100.Car100_ID, tbCar100.Description100 AS [Caractéristique 100], " & _
"tbCar200.Car200_ID, tbCar200.Description200 AS [Caractéristique 200], " & _
"tbCar300.Car300_ID, tbCar300.Description300 AS [Caractéristique 300], " & _
"tbCar400.Car400_ID, tbCar400.Description400 AS [Caractéristique 400], " & _
"tbCar500.Car500_ID, tbCar500.Description500 AS [Caractéristique 500], " & _
"tbCar600.Car600_ID, tbCar600.Description600 AS [Caractéristique 600], " & _
"tbCar700.Car700_ID, tbCar700.Description700 AS [Caractéristique 700], " & _
"tbProducts.Prod_ID, tbProducts.PartNumber AS [Part Number] , tbProducts.Description AS [Description] , tbProducts.DateAdded AS [Date] " & _
"FROM tbProducts INNER JOIN (tbCar700 INNER JOIN (tbCar600 INNER JOIN (tbCar500 INNER JOIN (tbCar400 INNER JOIN (tbCar300 INNER JOIN (tbCar100 INNER JOIN " & _
"(tbCar200 INNER JOIN tbIntersect ON tbCar200.Car200_ID = tbIntersect.Car200_ID) " & _
"ON tbCar100.Car100_ID = tbIntersect.Car100_ID) ON tbCar300.Car300_ID = tbIntersect.Car300_ID) ON tbCar400.Car400_ID = tbIntersect.Car400_ID) ON tbCar500.Car500_ID = tbIntersect.Car500_ID) ON tbCar600.Car600_ID = tbIntersect.Car600_ID) ON tbCar700.Car700_ID = tbIntersect.Car700_ID) ON tbProducts.Prod_ID = tbIntersect.Prod_ID " & _
";"
Here is the content of the tbIntersect table:
Car100_ID Car200_ID Car300_ID Car400_ID Car500_ID Car600_ID Car700_ID Prod_ID ID
1 1 1 1 1 1 1 1 1
1 2 1 1 1 1 1 19
1 3 1 1 1 1 1 20
I need to return the rows that have null data, ex: second row because Prod_ID is NULL and third row because Car300_ID is NULL. In fact I need the data from the other joint tables that correspond to these ID fields.
Thanks
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Oct 16, 2004
I have table Products and Orders that has the following columns:
table Products: ProductID, ProductName
table Orders: OrderID, ProductID, OrderDate, Quantity, Price
The Orders table contains orders placed on all the dates. I want to obtain a list of orders for a particular date, if there is no order for a product on the requested date, I want to return null values for the Quantity and Price fields.
I tried the following select statement:
select Products.ProductName, Orders.Quantity, Orders.Price from Products left join Orders on Products.ProductID = Orders.ProductID where Orders.OrderDate = '10/16/2004'
Where, there are a total of three products (A,B,C) in table Products. Product-C has no order on 10/16/2004, but I want it to return :
ProductName / Quantity / Price
Product-A 5 1.89
Product-B 6 2.43
Product-C null null
Obviously, my sql statement won't work becaue the where clause will filter out Product-C.
Could anyone help me figure out how to modify my sql code to get the resultset I want?
Thanks in advance.
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Nov 4, 2003
Hello
I've a table with these values:
Cod_Lingua - Des_Lingua
------------------------------
ITA Italian
GER German
ENG English
FRA French
and another table with product/description
ProductID - Cod_Lingua - Description
-------------------------------------------
1 ITA Mia Descrizione
1 ENG My Description
I've this SELECT:
SELECT Tab_Lingue.Cod_Lingua, Descrizioni_Lingua.Description
FROM Descrizioni_Lingua RIGHT OUTER JOIN Tab_Lingue ON Tab_Lingue.Cod_Lingua=Descrizioni_Lingua.Cod_Lingua
WHERE Descrizioni_Lingua.ProductID=1
I get these results:
ITA - Mia Descrizione
ENG - My Description
I don't want this. I'd like to have this:
ITA - Mia Descrizione
ENG - My Description
GER - (null)
FRA - (null)
How can I get the second result set?
Thanks for your support.
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Oct 8, 2015
I was writing a query using both left outer join and inner join. And the query was ....
SELECT
S.companyname AS supplier, S.country,P.productid, P.productname, P.unitprice,C.categoryname
FROM
Production.Suppliers AS S LEFT OUTER JOIN
(Production.Products AS P
INNER JOIN Production.Categories AS C
[code]....
However ,the result that i got was correct.But when i did the same query using the left outer join in both the cases
i.e..
SELECT
S.companyname AS supplier, S.country,P.productid, P.productname, P.unitprice,C.categoryname
FROM
Production.Suppliers AS S LEFT OUTER JOIN
(Production.Products AS P
LEFT OUTER JOIN Production.Categories AS C
ON C.categoryid = P.categoryid)
ON
S.supplierid = P.supplierid
WHERE
S.country = N'Japan';
The result i got was same,i.e
supplier country productid productname unitprice categorynameSupplier QOVFD Japan 9 Product AOZBW 97.00 Meat/PoultrySupplier QOVFD Japan 10 Product YHXGE 31.00 SeafoodSupplier QOVFD Japan 74 Product BKAZJ 10.00 ProduceSupplier QWUSF Japan 13 Product POXFU 6.00 SeafoodSupplier QWUSF Japan 14 Product PWCJB 23.25 ProduceSupplier QWUSF Japan 15 Product KSZOI 15.50 CondimentsSupplier XYZ Japan NULL NULL NULL NULLSupplier XYZ Japan NULL NULL NULL NULL
and this time also i got the same result.My question is that is there any specific reason to use inner join when join the third table and not the left outer join.
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Aug 10, 2007
Scenario:
OLEDB source 1
SELECT ...
,[MANUAL DCD ID] <-- this column set to sort order = 1
...
FROM [dbo].[XLSDCI] ORDER BY [MANUAL DCD ID] ASC
OLEDB source 2
SELECT ...
,[Bo Tkt Num] <-- this column set to sort order = 1
...
FROM ....[dbo].[FFFenics] ORDER BY [Bo Tkt Num] ASC
These two tasks are followed immediately by a MERGE JOIN
All columns in source1 are ticked, all column in source2 are ticked, join key is shown above.
join type is left outer join (source 1 -> source 2)
result of source1 (..dcd column)
...
4-400-8000119
4-400-8000120
4-400-8000121
4-400-8000122 <--row not joining
4-400-8000123
4-400-8000124
...
result of source2 (..tkt num column)
...
4-400-1000118
4-400-1000119
4-400-1000120
4-400-1000121
4-400-1000122 <--row not joining
4-400-1000123
4-400-1000124
4-400-1000125
...
All other rows are joining as expected.
Why is it failing for this one row?
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Jan 25, 2008
I have a pivot transform that pivots a batch type. After the pivot, each batch type has its own row with null values for the other batch types that were pivoted. I want to group two fields and max() the remaining batch types so that the multiple rows are displayed on one row. I tried using the aggregate transform, but since the batch type field is a string, the max() function fails in the package. Is there another transform or can I use the aggragate transform another way so that the max() will work on a string?
-- Ryan
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Jun 5, 2006
I have a merge join (full outer join) task in a data flow. The left input comes from a flat file source and then a script transformation which does some custom grouping. The right input comes from an oledb source. The script transformation output is asynchronous (SynchronousInputID=0). The left input has many more rows (200,000+) than the right input (2,500). I run it from VS 2005 by right-click/execute on the data flow task. The merge join remains yellow and the task never finishes. I do see a row count above the flat file destination that reaches a certain number and seems to get stuck there. When I test with a smaller file on the left it works OK. Any suggestions?
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Mar 1, 2008
hello, i am running mysql server 5 and i have sql syntax like this:
select
sales.customerid as cid,
name,
count(saleid)
from
sales
inner join
customers
on
customers.customerid=sales.customerid
group by
sales.customerid
order by
sales.customerid;
it works fine and speedy. but when i change inner join to right join, in order to get all customers even there is no sale, my server locks up. note: there is about 10000 customers and 15000 sales.
what can be the problem?
thanks,
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Oct 10, 2007
Given a table of building components e.g. floors, walls, etc, etc:
create table component_multiplier_table
(
system_code char(4),
system_component_code char(3),
function_code char(4),
component_multiplier dec(7,6)
)
Where function_code is the function of the area e.g. Auditorium, Classrom, etc, etc. And not all components are available for all functions e.g. Carpeting is available for Classrooms but not Power Plants or Warehouses.
I need to self join the above table to itself on system_code and system_component_code and find out which rows are missing from each side.
A query that I've been banging away at with no success is:
SELECT c1.*, c2.*
FROM [dbo].[component_multiplier_table] c1 FULL OUTER JOIN [dbo].[component_multiplier_table] c2
ON (c1.system_component_code = c2.system_component_code) AND (c1.[system_code] = c2.[system_code])
WHERE c1.function_code = '2120' AND c2.[function_code] = '2750' AND (c1.[system_code] IS NULL OR c2.system_code IS NULL);
I added the is null conditions, no joy. I've tried every flavor of outer join w/o success.
Could any T-SQL gurus out there help me figure out how to do this in a set before I start coding
DECLARE crsr CURSOR
Thanks.
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Apr 16, 2008
Anyone know why using
SELECT *
FROM a LEFT OUTER JOIN b
ON a.id = b.id
instead of
SELECT *
FROM a LEFT JOIN b
ON a.id = b.id
generates a different execution plan?
My query is more complex, but when I change "LEFT OUTER JOIN" to "LEFT JOIN" I get a different execution plan, which is absolutely baffling me! Especially considering everything I know and was able to research essentially said the "OUTER" is implied in "LEFT JOIN".
Any enlightenment is very appreciated.
Thanks
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Jun 1, 2004
Oi! What follows is a hypothetical situation, but it is a totally analogous to a real problem Im having, but provides an easier model to understand.
Imagine that you have database-driven battleship game and its time to render the board. Also imagine that you have to render more than one board and that the ships are all the size of one point on the grid.
One sql result you need is a list of all the points on the grid, regardless of whether or not there is a ship on it. This will make rendering much easier for you, because you can simply look at the record index to determine if a ship is present. The data that is stored about the position of the ships consists of one record containing the grid index and ship name.
One possible way to retrieve this data is to build a table that you will not change which contains a record for each point on the grid. Is it possible to union or join on this table to retrieve a list of results that contain both unoccupied locations and occupied ones?
Here is what I've come up with, but it contains results that have a null location when there are no ship records:
SELECT
Grids.GridID,
Ships.GridLocation,
Ships.Name
FROM
Grids
FULL OUTER JOIN Ships
ON Ships.GridID = Grids.GridID
WHERE
Grids.PlayerID = 1
UNION-- (**not** UNION ALL)
SELECT
Grids.GridID,
GridLocations.GridLocation,
(SELECT ShipName FROM Ships WHERE GridID = Grids.GridID AND GridLocation = GridLocations.GridLocation)
FROM
GridLocations, Grids
WHERE
Grids.PlayerID = 1
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Jul 14, 2004
Hello there,
I have 2 tables:
Table: Leads
------------------
ID LDate ClientID
1 04/02/2004 101
2 04/03/2004 103
3 04/04/2004 104
....
Table: Tracking
------------------
ID TDate ClientID Shown Clicked
1 04/02/2004 101 3 2
2 04/03/2004 103 5 4
3 04/04/2004 101 3 9
....
I need a query to display results for any Client ID like this:
Date Leads Shown Clicked
=============================
04/02/2004 1 3 2
04/04/2004 0 3 9
.....
=============================
The following query doesn't work, it display 1 in leads column instead of 0:
select t.Tdate, count(l.id) as Leads, sum(t.shown) as Views
from tracking t left outer join Leads l on r.clientid = t.clientid
where l.clientid = 101
and l.Ldate >= 'April 2,2004'
and t.Tdate >= 'April 2,2004'
group by t.Tdate
Thanks a lot for your time and help in advance.
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Aug 10, 2006
Here's the lookup table, tblLookup:
Task
SubTask
Subset
Superset
Description
And here's the more voluminous table, tblRecords, to which I need to join that:
Task
SubTask
Acct_cat
Actual_Amount
Budgeted_Amount
The problem is that the Task data in tblLookup consists only of the first 5 chars of the same kind of data in tblRecords (e.g., if a field on that record in tblRecords says "BILLYGOAT", that field in tblLookup is entered only as "BILLY").
How do I match them up?
Thanks.
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Aug 31, 2006
Hello,
I am having problems with an outer join statement.
I have written a procedure that tests a table for missing and corrupt data and
to test my procedure, I take a table with 100% correct entries and corrupt them by hand. Then I test if my repaird data is looking like the correct data did.
To do the test, I copy the correct data into a temp table "copy", join it with the "repaired" table and check if any fields look different. The problem is, that i don't get the missing data. The statement is looking like this:
select o.*,'#',k.* from repaired o right outer join copy k on
(str(o.a) + 'A' + str(o.b) + 'A' + str(o.c) =str(k.a)+ 'A' + str(k.b) + 'A' + str(k.c) )
where
o.D<>k.D or
o.E<>k.E or
o.F<>k.F or
...
I have dont the concatenation because I thougt, that a join with 3 fields could be responsible for not finding the missing data in table "copy".
Before that it looked like:
... on (o.a=k.a and o.b=o.b and o.c = k.c) where ...
In table "copy" is a record missing that is in table "repaired".
Why is my statement not printingout that missing record?
Shouldn't be an outer join exactly what I have to use for finding missing data?
I anybody can help me, I would be very happy.
Sven
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Mar 15, 2007
Why do we need a Right outer join, when we get the same results by swapping the order in which tables are specified in a Left join?
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Apr 21, 2004
Ok....I have 3 tables.
Entity
--------
name
entity_key
Address
----------
street
zip
mailing_flag
entity_key
Phone
--------
phone_number
phone_type_key
entity_key
I want to see all of the Entity records with their corresponding Address and Phone records. (select e.name, a.street, a.zip, p.phone_number)But only show the Address record for that Entity if the mailing_flag is 'Y' and I only want to see the Top 1 Phone record where the phone_type_key = 'Home'. If the above criteria isn't met I just want to see nulls for the Address and Phone records.
My problem is getting ALL the Entity records to return. It only wants to give me the Entity records that have Address or Phone associated with them. That and somehow showing the Top 1 phone record for the Entity are my issues.
Any help would be much appreciated......Thanks!
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