Left Join Leaving Out Unmatched Records?
Oct 4, 2007
Hi folks. Thanks for the opportunity to get a bit of help here.
I've got two tables. Say, table "foo" and table "bar".
I LEFT JOIN them on a key, say, foo.id and bar.fooid.
For some reason, when I do this join, I get only records from "foo" which have a mate in "bar".
What I really need is all records from "foo", but the columns from bar when there is a match. I don't want to exclude records from "foo" just because they don't have a match from "bar".
Am I just misusing LEFT JOIN?
Any guidance would be greatly appreciated.
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Mar 3, 2015
How to return only non matching left join records. Currently I am doing a traffic management database to learn sql.
I am checking for all parishes with no associated drivers. Currently I only have 2 of such.
The regular left join
select parish.name, driver.fname from parish left join driver on driver.parish=parish.name
Returns the all the names of the parishes and the first name of the associated drive, followed by the matches, however the two parishes with no matches have null for the first name.
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Nov 30, 2004
I have 2 tables GLSUMMARY and GLBUDGET, they are identical.
I am joining them together with a left outer join from the SUMMARY to the BUDGET but when I dont have a matching BUDGET record on the join the SUMMARY gets dropped as well :eek:
Any help will be appreciated!
Here is the query!
SELECT s.conu as CoNu, s.deptnu as DeptNu,
s.fundnu as FundNu, s.acctnu as AcctNu,
Sum(isNull(Amt01,0)) as Amt01,
Sum(isNull(Amt02,0)) as Amt02,
Sum(isNull(Amt03,0)) as Amt03,
Sum(isNull(Amt04,0)) as Amt04,
Sum(isNull(Amt05,0)) as Amt05,
Sum(isNull(Amt06,0)) as Amt06,
Sum(isNull(Amt07,0)) as Amt07,
Sum(isNull(Amt08,0)) as Amt08,
Sum(isNull(Amt09,0)) as Amt09,
Sum(isNull(Amt10,0)) as Amt10,
Sum(isNull(Amt11,0)) as Amt11,
Sum(isNull(Amt12,0)) as Amt12,
Sum(isNull(Amt13,0)) as Amt13,
Sum(isNull(Bud01,0)) as Bud01,
Sum(isNull(Bud02,0)) as Bud02,
Sum(isNull(Bud03,0)) as Bud03,
Sum(isNull(Bud04,0)) as Bud04,
Sum(isNull(Bud05,0)) as Bud05,
Sum(isNull(Bud06,0)) as Bud06,
Sum(isNull(Bud07,0)) as Bud07,
Sum(isNull(Bud08,0)) as Bud08,
Sum(isNull(Bud09,0)) as Bud09,
Sum(isNull(Bud10,0)) as Bud10,
Sum(isNull(Bud11,0)) as Bud11,
Sum(isNull(Bud12,0)) as Bud12,
Sum(isNull(Bud13,0)) as Bud13
FROM shelbydb.shelby.GLSummary S
left OUTER JOIN shelbydb.shelby.GLBudget B
on
(s.begindate = b.begindate)
and (s.acctnu = b.acctnu)
and (s.conu = b.conu)
and (s.deptnu = b.deptnu)
and (s.fundNu = b.fundNu)
WHERE
(s.begindate = '1/1/2004'
and b.begindate = '1/1/2004')
group by
S.conu, S.deptnu, S.fundnu, S.acctnu,
b.conu, b.deptnu, b.fundnu, b.acctnu
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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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Jan 19, 2005
Hi everyone and belated happy new year...
I think someone has shown me how to do this before but I can't find it.... anyway....
I have three tables Person, Color and PersonColor.
Person Table
IdName
-------
P1Barry
P2Jenny
Color Table
IdColor
-------
C1Black
C2Green
C3Yellow
PersonColor Table
PersonIdColorId
------
P1C2
P2C1
P2C3
I need a query to find what colors people have not selected. So the result set would look something like
P1BarryC1Black
P1BarryC3Yellow
P2JennyC2Green
I can't use temp tables and I can't use cursors. Anyone got a solution for me?
Cheers,
Rokslide
edit: corrected sample data
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Aug 31, 2005
Hey guys
Im pretty new to SQL so i was wondering if you might be able to give me a hand with something.
I have 2 tables, clients + orders. Each table contains a column called custID which contains the client code, each order creates a new record in the orders table so the orders table contains many more records than the clients table.
I am trying to find out what clients have not placed orders at all, but i can't wrap my head around it, i can obviously work out who HAS, but i need to find out who HASN'T.
Any help would be really appreciated.
Mark
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Jul 15, 2013
I have to build a query and I am not sure how to build it.
Our data has providers with different products. We have an “DGH” product and a “PRM”. I need to find the provider that don’t have both. Its sounds very simple, but I am having an awful time figuring it out. Sometimes I get a record that has both products, it is probably how my where clause is working.
Anyway, here is an example of what I don’t want in my records because this is good. It has a DGH and PRM.
pro_pcs pro_lname pro_fname prop_prd pro_tax1 pro_addr100018791 Smith John DGH 12345868 Kiem ST
00018791 Smith John PRM 12345868 Keim ST
I would want to see this one because there only a DGH and it need to have a PRM product.
pro_pcspro_lname pro_fname prop_prd pro_tax1 pro_addr1
00018791 Rubin SamDGH2345868 Kiem ST
I came up with this below and it seems to be working. The only thing is, I now have to make this so people can add a parameter on the pro_tax1 to see the different records. Is there a better way to do this or how can I use what I have below and add a parameter too it.
Select pro_pcs, pro_lname, pro_fname, pro_addr1
from #ALLProducts
Where pro_tax1 = '12345868'
and prop_prd = 'DGH'
except
Select pro_pcs, pro_lname, pro_fname, pro_addr1
from #ALLProducts
Where pro_tax1 = '12345868'and prop_prd = 'PRM'
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Feb 28, 2008
I would like to build a query that will return all the records in Table1 that will not match with records in table 2. All colums in table 1 have NULL values. Only one column is populated with state abreviations.
SELECT nvl(field1, 0),
field2,
field3,
nvl(field4, 0),
nvl(field5, 0),
nvl(field6, 0)
FROM TBL1
-------------------------------------------
Result: Record count 3000.
Only field3 is populated everything else is null.
select field3 from tbl1 group by field2 - record count = 48
SELECT nvl(field1, 0),
field2,
field3,
nvl(field4, 0),
nvl(field5, 0),
nvl(field6, 0)
FROM TBL2
-------------------------------------
Result Record count = 0
------------------------------------------------------
SELECT nvl(field1, 0),
field2,
field3,
nvl(field4, 0),
nvl(field5, 0),
nvl(field6, 0)
FROM TBL1
minus
SELECT
nvl(field1, 0),
field2,
field3,
nvl(field4, 0),
nvl(field5, 0),
nvl(field6, 0)
FROM tbl2
---------------------------
Result: Record Count = 48
I used the left join and it didn't work.
I would like to build a query that will display all 3000 records.
Any help will be appreciated.
thank you!
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Jul 21, 2004
I need to list all the records in Table2 which don't have matching field values in Table1.
This the the exact opposite of what I need:
SELECT DISTINCT
Field1,
Field2,
Field3,
Field4,
Field5
FROM
[Table1]
WHERE EXISTS(
SELECT DISTINCT
FieldA,
FieldB,
FieldC,
FieldD,
FieldE
FROM
[Table2]
)
The above seems to give me all records in Table1 in which the five fields match the five fields specified in Table2. What does not show up is the test record I put in Table2 which is not in Table1.
What I need, however, is the exact opposite.
I tried the above using NOT EXISTS but I get no records at all.
How do do this?
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Apr 7, 2008
Is there any difference between left join and left outer join in sql server 2000?please reply with example if any?
Thanks in advance
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May 14, 2008
Hi,
Whats the diference between a left join and a left outer Join
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May 22, 2015
I have two xml source and i need only left restricted data.
how can i perform left restricted join?
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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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Aug 9, 2013
Why would I use a left join instead of a inner join when the columns entered within the SELECT command determine what is displayed from the query results?
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Feb 5, 2015
Why does this right join return the same results as using a left (or even a full join)?There are 470 records in Account, and there are 1611 records in Contact. But any join returns 793 records.
select Contact.firstname, Contact.lastname, Account.[Account Name]
from Contact
right join Account
on Contact.[Account Name] = Account.[Account Name]
where Contact.[Account Name] = Account.[Account Name]
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Aug 17, 2007
Hi guys,
I'll appreciate any help with the following problem:
I need to retrieve data from 3 tables. 2 master tables and 1 transaction table.
1. Master table TBLOC contain 2 records :
rcd 1. S01
rcd 2. S02
2. Master table TBCODE contain 5 records:
rcd 1. C1
rcd 2. C2
rcd 3. C3
rcd 4. C4
rcd 5. C5
3. Transaction table TBITEM contain 4 records which link to 2 master table:
rcd 1. S01, C1, CAR
rcd 2. S01, C4, TOY
rcd 3. S01, C5, KEY
rcd 4. S02, C2, CAR
I use Left Join & Right Join to retrieve result below (using non-ASNI method) but it doesn't work.
Right Join method:
SELECT C.LOC, B.CODE, A.ITEM FROM TBITEM A RIGHT JOIN TBCODE B ON A.CODE = B.CODE
RIGHT JOIN TBLOC C ON A.LOC = C.LOC
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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Jan 25, 2015
-- Why is the left table in a LEFT JOIN limited by the where clause on the right table?eg
DECLARE @LeftTable TABLE (LeftID INT NOT NULL IDENTITY(1, 1), LeftValue INT NULL)
INSERT @LeftTable (LeftValue)
VALUES (111)
INSERT @LeftTable (LeftValue)
VALUES (222)
[code]....
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Jan 26, 2007
I'm trying to join 2 tables. I thought I was getting the correct results but it turns out I'm not.
My Query:
SELECT IVINVA, IVORDN, IVCSLN, IVRESR, IVCITM, CONVERT(varchar(12),CAST(IVIAMT as money),1) AS ExtPrice, CONVERT(varchar(12),CAST(IVPIVC as money),1) AS DistPrice, IVCSUM, IVQYCS, IVDESC, OIRESR, OIDPCT, CONVERT(varchar(12),CAST(IVPIVC - (OIDPCT / 100 * IVPIVC) as money),1) AS NetPrice FROM INVDET1_TBL LEFT JOIN ORDDIS_TBL ON ORDDIS_TBL.OIORDN = INVDET1_TBL.IVORDN AND ORDDIS_TBL.OIRESR = INVDET1_TBL.IVRESR WHERE IVORDN = '0859919' AND IVINVA = '00324024'
Basically, my problem lies in the seonc condition of the LEFT JOIN. I needed to set the two tables equal my item number, because in some situations I need that logic to get the correct result. It most other cases, that item column in the ORDDIS_TBL is NULL, thus giving me the wrong results. In that case, I would want the JOIN to only be ORDDIS_TBL.OIORDN = INVDET1_TBL.IVORDN, and not include the second part. Is there a way I can condition this with an If statement, If ORDDIS_TBL.OIRESR is Null then do this join, if not, then do this? I'm confused how to get the proper result here.
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Jul 7, 2005
I need to make a left join from the freezefile f, to sped s, instead of having f.studentid = s.id in the where clause. Any help??
select f.studentid, f.studentname, f.sex, fs.mealstatus, s.except, s.lre, r.description, g.testid, g.scale_la, g.scale_ma, t.test_name, t.year
from freezefile f, fsapps fs, sped s, regtb_exception r, gqe_scores g, test_info t
where
f.type = 'ADM'
and
s.except = r.code
and
t.test_name = 'ISTEP'
and
t.year = 2004
and
g.testid = t.testid
and
f.studentid = fs.id
and
f.studentid = s.id
and
f.studentid = g.studentid
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Aug 2, 2004
i'm shure it's some smal stiupid mistake bat I can't find it, PLZ help.
1)
select komorka from #plantemp
--result
komorka
09
10
I-P
II-P
III-P
SI/1
SI/2
SI/3
2)
select komorka,ustalenia from analiza_1 a where a.koniec between '20040701'and '20040731'
komorka ustalenia
SI/1788138.9300
SI/246638.4900
SI/216218.4000
08.0000
3)
select p.komorka,isnull(sum(ustalenia),0)
from #plantemp p left join analiza_1 a on p.komorka=a.komorka
where a.koniec between '20040701'and '20040731'
group by p.komorka
komorka ustalenia (sum)
08.0000
SI/1788138.9300
SI/262856.8900
I need all rows from table 1 bat right and left join gives me the same results, WHY
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Jan 9, 2007
There are two tables:
tblIndices:
IndexID, Name
1index1
2index2
3index3
.
.
.
tblBasketConstituents
ID, ParentIndexID, ChildIndexID, Weight
121 20
223 80
313 50
412 50
As you can see the ParentIndexID and ChildIndexID fields refer to tblIndices.IndexID
I would like a stored procedure as follows:
show all index names and show the wights for the indexID you passed.
This is what I have so far and it is not correct yet. Not sure what the syntax should be.
alter PROCEDURE [dbo].[uspBasketIndices_Get]
@IndexIDint
AS
select
i.IndexID,
i.[Name],
bc.Weight
from
tblIndices as i left join tblBasketConstituents as bc on i.IndexID = bc.ParentIndexID
and i.IndexID = @IndexID
order by
i.[Name]
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Feb 26, 2004
Any one know any facts and figures about maximum Left Joins allowed (or recommended) in one query?
I am running a MS SQL 2000 my database is full of relational data and most of my foreign keys (INT data type) are a Clustered Indexed, Usually I will only be pulling one record from collection of about a dozen tables, but the Database is expected to grow fast and become big.
Right now I have a Stored Proc that has eight(8) LEFT JOINs in it. My worry is that this query will kill me as the database approaches 50,000 records.
Lito
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Mar 6, 2007
Hi all. My query works fine, it generates reports but not my expected result.
select d.fullname, p.nickname, p.birthdate, p.birthplace,
p.gender, p.civilstatus, p.religion, p.nationality, p. weight, p.height,
p.haircolor, p.eyecolor, p.complexion, p.bodybuilt, p.picture, p.dialectspoken,
d.mobilephone, d.prprovince,[Age] = dbo.F_AGE_IN_YEARS( birthdate, getdate() ),
c.name, c.address, c.telno, c.email, c.occupation, ed.year1, ed.year2, ed.degree, sch.schname
from hremployees as e
inner join psdatacenter as d on e.empdcno = d.dcno
inner join pspersonaldata as p on e.empdcno = p.dcno
left join hrappempcharrefs as c on e.empdcno = c.empdcno
left join hrappempeducs as ed on e.empdcno = ed.empdcno
left join hrsetschools as sch on ed.schoolcode = sch.schcode
the above query gives a 77 records
if i ran "select * from hremployees" generates 60 records
i think the error is in the left joining.
hrappempcharrefs, hrappempeducs and hrsetschools must be left joined to hremployees.
thanks
-Ron-
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Dec 2, 2007
Hi Guys,
I started working with linq and vb9.0 but i have a small problem i could feagure how to solve in c# but not in vb
I wanted to make left join or right join on vb 9.0 and linq is it possible or this is only c# feature ?
Waiting to hear from u guys,
Thanks
Softy
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Jan 7, 2002
Hello!
I need to write a query using left outer join and I'm having trouble with it.
I have 2 tables:customer and cust_info.
I want to pull all records from customer table and cust_info table even if there is no related data in cust_info table.
But I need one condition in this query:only records from customer table where cus_type in ("A","B","C").
I don't need all other types ("D","E").
So my query looks like this:
select customer.cus_name,customer.cus_address,customer.cu s_type,cus_info.status
from customer
left outer join cus_info ON customer.sxdat_pk = cus_info.sxdat_pk
and cus_type in ("A","B","C")
AND cus_info.cus_table = 'CUSTOMER'
The result should be like this:
cus_name cus_address cus_type status
Amoco 457 bent A new
Bingo 47 lone oak C NULL
Sears 1020 Magic dr. B exist
But my query pulls records for customers with type "D" and "E" that I'm trying to exclude from result.
Please help.
Thanks,
lena
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Apr 18, 2008
Hello everybody!!!
I have to left join 2 tables. The first consists of columns:id, description, descr_num.
The second table: id, descr_num, value.
I need to extract description from table1 where descr_num is in the range , say, 1-10.
LEFT JOIN
extract value from table2 ,descr_num should be in the same range. in table2 some values from (1,10) and desc_num could be not present.
BUT i want this left join to be limited as i said.
Is there any solution to this prob. without creating temp tables. Or actually can i do such a join?
Thank you
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Jul 18, 2006
Now I have a table with the table design as following :
table cst_EmpProfile
intEmpId nvcEmpName nvcEmpAddress intEmployeeType bitActiv
1 Peter Null Null true
2 Juli 1, xxxx 2 true
3 Sam Null Null False
table cst_EmpType
intEmpType nvcEmployeeType
1 Free Enginner
2 Manager
3 Operator
To join the table but MUST follow the condition as bitActiv = TRUE:
select emp.nvcEmpName, emp.nvcEmpAddress, ety. nvcEmployeeType from cst_EmpProfile emp left join cst_EmpType on emp.intEmployeeTypee = ety.intEmpType and emp.bitActiv = 1.
But, the sql statement doesnt output the my expected result.
Because the data row return must be 1st and 2nd row as it bitActiv = true.
So, how's I going achieve what i want. tq.
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Jan 10, 2007
Hi, I'm getting the error Syntax error (missing operator) in query expression 'dbPWork.id = dbPWorkWord.work_id LEFT JOIN words ON dbPWorkWord.word_id = words.id'." on the query below. Everything looks in place to me. Do you see anything that shouldn't work?
Query:
Code:
Code:
SELECT DISTINCT dbPWork.id, description_e as description, w_id , dateStart, dateEnd FROM dbPWork
LEFT JOIN dbPWorkW ON dbWork.id = dbPWorkW.work_id
LEFT JOIN words ON dbPWorkW.word_id = words.id
Everything works fine until I add the second LEFT JOIN statement. Any ideas? I'm stumped.
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Sep 22, 2005
I have a left join that doesn't suit my request.
select * from A
left join B
on A.x=B.x
The problem is that for a specific record in A we can find 1 or more entries in B. What I want is to return only the 1st entry found on B.
thx
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Dec 6, 2005
Hi,
I have got a query for you guys. Can any one temme the difference between
"FROM Table_A LEFT JOIN Table_B" and "FROM Table_B RIGHT JOIN Table_A"
;)
Thanks,
Rahul Jha
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May 1, 2004
Hi,
Iwant to make a left join between two tables connected with a specific field
but I also want to have some criteria on the right table.
I want to display all the rows from the first(left) table and only the rows from the secod (right) table that match the join and the criteria.
However If I have criteria on the second table the join behaves like an inner join displaying only the rows that exist in both tables.
In MS Access instead of the right table I use a query in which I enter the criteria and then I connect it with a left join in a new query in order to get the right results. How can I do itin MSSQLServer without using Views?
Must I use a subquery with Exists and what is the right syntax in order to achieve this?
Best Regards,
manolis Perrakis
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Jun 17, 2008
Hi there,
I have three tables
Job
JobID
WeightIn
WeightOut
Operator
OperatorID
NameFirst
NameLast
JobOperator
JobOperatorID
JobID
OperatorID
a job can be done with 1 or more operators
I want to be able to show user both assigned and unassigned operator on the front end on a certain job so I haev only parm being passed in @jobID.
How do I got about showing all the operators but somehow differentiate ones already assigned to job
Thanks!
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