MS SQL Server :: Transact SQL :: How To Select A Single Record In A Left Join

Transact SQL :: Select From A Select Using Row Number With Left Join

Aug 20, 2015

The select command below will output one patient’s information in 1 row:

Patient id
Last name
First name
Address 1
OP Coverage Plan 1
OP Policy # 1
OP Coverage Plan 2

[code]...

This works great if there is at least one OP coverage. There are 3 tables in which to get information which are the patient table, the coverage table, and the coverage history table. The coverage table links to the patient table via pat_id and it tells me the patient's coverage plan and in which priority to bill. The coverage history table links to the patient and coverage table via patient id and coverage plan and it gives me the effective date.

select src.pat_id, lname, fname, addr1,
max(case when rn = 1 then src.coverage_plan_ end) as OP_Coverage1,
max(case when rn = 1 then src.policy_id end) as OP_Policy1,

code]...

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Transact SQL :: Difference Between Inner Join And Left Outer Join In Multi-table Joins?

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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Two Left Outer Join In A Single Query

Dec 12, 2007

How to use two left outer join in a single query?

I was trying to run the follwoing query.It is giving me error

"select woancestor.wonum,wplabor.laborcode, wplabor.quantity,wplabor.laborhrs
from wplabor,workorder left outer join woancestor on workorder.wonum=woancestor.wonum
and wplabor left outer join labtrans on wplabor.laborcode=labtrans.laborcode
where woancestor.ancestor='572099' and workorder.istask=1
and workorder.wonum=wplabor.wonum"

Error is "Server: Msg 156, Level 15, State 1, Line 3
Incorrect syntax near the keyword 'left'."

But the following query works fine

"select woancestor.wonum,wplabor.laborcode, wplabor.quantity,wplabor.laborhrs
from wplabor,workorder left outer join woancestor on workorder.wonum=woancestor.wonum
where woancestor.ancestor='572099' and workorder.istask=1
and workorder.wonum=wplabor.wonum"

please help me

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Left Outer Join And Last Record

Sep 21, 2007

my table isCustomer Customer Id--------- ----------------Mary 1Jhon 2Anna 3OrderId CustomerId Product ProductDesc------- --------- --------- -----------1 1 video bla bla2 1 tv bla bala3 2 video bla bla4 2 cd bla blaI want to see-------marry tv bla blaJohn cd bla blaanna

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Select Command - Left Join Versus Inner Join

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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Transact SQL :: Left Join With Subquery

Aug 24, 2015

SELECT A.EmpId,A.IncidentDate
FROM EmployeePoints1 as A
WHERE IncidentDate=
(SELECT MAX(IncidentDate)
FROM EmployeePoints1
WHERE EmpId = A.EmpId) AND (DATEADD(day,28,DATEADD(WEEK, DATEDIFF(WEEK, 0,A.IncidentDate), 0)) < DATEADD(WEEK, DATEDIFF(WEEK, 0,GetDate()), 0)) AND (A.IncidentCode = 'I' OR A.IncidentCode = 'A')
LEFT JOIN EmployeeTotalPoints1 ON EmployeeTotalPoints1.EmpId = A.EmpId

I am trying to left join another table but I got

Incorrect syntax near the keyword 'LEFT'.

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How To Return Null Values For Non-exist Record On A Left Join Statement

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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Transact SQL :: Left Join Returns Too Many Rows Vertically

Jun 18, 2015

I have a query that based 2 tables. I wrote a query with a left join on the base table but the result set returns multiple rows for each occurrence in the second table because of the left join. I want but to return all records from on table A and only matching records from table B which id but I would wan tit to keep return them vertically as the because it make it difficult to read when put in a spreadsheet. It want it to return the values horizontally so the rows are not increasing for each occurrence on table b.

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Left Join Vs Left Outer Join Syntax Generates Different Execution Plans

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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Transact SQL :: Left Join To Get Info From A Table With Foreign Keys

Sep 13, 2015

I am still new to SQL and I am having trouble obtaining the results I need from a query. I have worked on this command for some time and searched the internet but cannot seem to still get it correct.

I have a table called Patient. It's primary key is pat_id.

I have a second table called Coverage. It has no primary key. The foreign keys are pat_id, coverage_plan_id, and hosp_status.

I have a third table called Coverage_History.   It has a primary key consisting of pat_id, hosp_status, copay_priority, and effective_from.

I want to get the pat_id and all the coverage information that is current.   The coverage table contains specific insurance policy information.   The coverage_history table will indicate the effective dates for the coverage. So the tables could contain something like this:

Patient (pat_id and lname)
P123 Monto
P124 Minto
P125 Dento
P126 Donto

Coverage (pat_id, coverage_plan_id, hosp_status, policy_num)
P123     MED1   OP   A1499
P123     ACT4   OP   H39B
P124     MED1   OP   C90009
P124     RAC    OP   99KKKK
P124     RAC    OP   99KKKK
P124     MED1   OP   C90009
P125     ARP    OP   G190
P126     BCB    OP   H88

Coverage_History (pat_id, hosp_status, copay_priority, effective_from, coverage_plan_id, effective_to)
P123   OP   1   20150102 MED1    NULL
P123   OP   2   20150102 ACT4    NULL
P124   OP   1   20150203 RAC     20150430
P124   OP   2   20150203 MED1    20150430
P124   OP   1   20150501 MED1    NULL
P124   OP   2   20150501 RAC     NULL
P125   OP   1   20150801 ARP     NULL
P126   OP   1   20150801 BCB     20160101

select p.pat_id, p.lname, ch.coverage_plan_id, ch.hosp_status, ch.effective_from, ch.effective_to, ch.copay_priority,
       from patient p
     left join
  ( coverage_history ch left join coverage c on ch.coverage_plan_id = c.coverage_plan_id and ch.patient_id = c.patient_id and
                                   (ch.effective_to is NULL or ch.effective_to >= getdate()
)
         ) on ch.patient_id = p.patient_id

    where ( ch.effective_to is NULL or ch.effective_to >= getdate() )

So I want to see:

P123 Monto MED1 OP   20150102    NULL       1
P123 Monto ACT4 OP   20150102    NULL       2
P124 Minto MED1 OP   20150501    NULL       1
P124 Minto RAC   OP   20150501    NULL       2
P125 Dento ARP   OP   20150801    NULL       1
P126 Donto BCB   OP   20150801    20160101    1

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Transact SQL :: Left Outer Join And Transaction Isolation Level

Nov 30, 2015

We have a service that inserts some rows into a parent table (P) and child table (C). This operation is atomic and performed within a transaction.

We also have a service that queries these tables such that rows are (should only be) returned from P where there are no children for that parent.

The SQL that performs this is simplified below:

SELECT P.SomeCol
FROM P
LEFT OUTER JOIN C ON P.PKofP_Value = C.PkofP_Value
WHERE
C.PkofPValue IS NULL
AND P.SomeOtherCol=0

Our expectation is that the query service should only return rows from P where there are no rows in C.

However, this seems not to be the case, and occasionally we find that rows from P are returned where there are matching rows in C.

We are sure that the process that inserts rows into P and C does so within a single transaction.

We have traced this with SQLTrace and can see the txn stag and committing and all operations using the same transactionid within the transaction.

We are running the default isolation level committed.

In SQLTrace we can see the query process start, the inserter process start and complete and then the query process continue (after presumably being blocked).

So how can the query process "miss" the child rows and return the parent from the above query?

Is it possible that, in this isolation level, the inserter process can block the query process such that when the inserter process commits and when the query process continues it does not see the child rows inserted because they were inserted in the table/index "behind" where the query process has already read - some kind of phantom phenomenon?

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Select DISTINCT In LEFT JOIN

Feb 14, 2008

Hi again,
I have this SQL (part of a stored procedure) where I do LEFT JOIN. SELECT callingPartyNumber, AlertingName, originalCalledPartyNumber, finalCalledPartyNumber,
dateTimeConnect,
dateTimeDisconnect,
CONVERT(char(8), DATEADD(second, duration, '0:00:00'), 108) AS duration,
clientMatterCode

FROM CDR1.dbo.CallDetailRecord t1
LEFT JOIN CDR2.dbo.NumPlan t2 ON t1.callingPartyNumber=t2.DNorPattern

WHERE
(t1.callingPartyNumber LIKE ISNULL(@callingPartyNumber, t1.callingPartyNumber) + '%') AND
(t1.originalCalledPartyNumber LIKE ISNULL(@originalCalledPartyNumber, t1.originalCalledPartyNumber) + '%') AND
(t1.finalCalledPartyNumber LIKE ISNULL(@finalCalledPartyNumber, t1.finalCalledPartyNumber) + '%') AND
(t1.clientMatterCode LIKE ISNULL(@clientMatterCode, t1.clientMatterCode) + '%') AND
(@callerName is NULL OR t2.AlertingName LIKE '%' + @callerName + '%') AND
(t1.duration >= @theDuration) AND
((t1.datetimeConnect) >= ISNULL(convert(bigint,
datediff(ss, '01-01-1970 00:00:00', @dateTimeConnect)), t1.datetimeConnect)) AND
((t1.dateTimeDisconnect) <= ISNULL(convert(bigint,
datediff(ss, '01-01-1970 00:00:00', @dateTimeDisconnect)), t1.dateTimeDisconnect))
The problem is that if the t2 has more than one entry for the same DNorPattern, it pulls the record more than once. So say t1 has a callingPartyNumber = 1000. t2 has two records for this number. It will pull it more than once. How do I get the Unique value.
What I am trying to get is the AlertingName (name of the caller) field value from t2 based on DNorPattern (which is the phone number).
If this is not clear, please let me know.
Thanks,
Bullpit

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Double SELECT To (LEFT) JOIN

Jul 26, 2013

I am currently working with 2 tables:

tbl_users: UserID,Username,ClientFK
tbl_clients: ClientID, ClientName

Now I want to get all Users with same Client but my parameter of my stored procedure is @Username.

This code works fine:

SELECT
UserID,
ClientFK,
WebLogin,
WebPassword,
WindowsUsername,
BasePriority,
IsAdmin,
DateCreated,
Enabled
FROM tbl_User
WHERE ClientFK = (SELECT [ClientFK] FROM tbl_User WHERE [WindowsUsername] = 'Livermorium')

But i don't want to have 2 selects and prefer a left join.

Is it possible to write a better select statement?

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Sub-select Vs. LEFT OUTER JOIN

May 11, 2007

I think it is quite often when you need to view some records, which refer (by key) to data in other tables. For instance, a user belongs to a group but it is preferable to show group name in the user data rather than group id. The options are

1) LEFT OUTER JOIN:
SELECT users.id, groups.name FROM users LEFT OUTER JOIN groups ON users.[group] = groups.id

2) A Subselect:
SELECT id, [group] = (SELECT [name] FROM groups WHERE id = users.[group]) FROM users

Which is better and why?

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Transact SQL :: Pull All Records From One Table And Just A Single Record From Another

Aug 7, 2015

I'm trying to pull all records from one table and just a single record from another. I have this join, (see below). It works ok, but the problem is if a blog record doesn't have a corresponding image record it doesn't return. The end result should be the blog record and a single corresponding image record. But always a blog record.

SELECT
[Blogs].[ID],
[Blogs].[BlogTitle],
[Blogs].[BlogType],
[Blogs].[BlogText],

[code]...

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Transact SQL :: How To Get First Table All Rows In Left Join If Condition Is Applied On Second Table

Aug 15, 2015

I am using stored procedure to load gridview but problem is that i am not getting all rows from first table[ Subject] on applying conditions on second table[ Faculty_Subject table] ,as you can see below if i apply condition :-

Faculty_Subject.Class_Id=@Class_Id

Then i don't get all subjects from subject table, how this can be achieved.

Sql Code:-
GO
ALTER Proc [dbo].[SP_Get_Subjects_Faculty_Details]
@Class_Id int
AS BEGIN

[code] ....

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Transact SQL :: SELECT Unique Values In Single Column?

Jun 8, 2015

I have the following two tables...

tblServer
-serverID
-serverName
-serverLocation
tblSite
-siteID
-serverID
-siteName
-siteIpAddress

I need to write a select query that gets the values of all columns but only returns unique sites because some sites are load balanced across several servers and where this is the case I don't want the site to appear multiple times in the list.

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Transact SQL :: Query To Select Particular Record?

Sep 21, 2015

I have created a sample Table with inserting below data,

ID Subject CreatedDate
1 Test 2015-09-20 22:59:07.373
2 Test 2015-09-21 09:16:58.290
3 Test 2015-09-21 09:18:17.500

I am loading a dropdown with Subject. The dropdown list shows the 3 items with same subject name since i have three records with same subject. I need a SQL select query for - if subject 'Test' is selected from the dropdown, need to be able to pull its corresponding associated ID from the table based on CreatedDate?

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Transact SQL :: Left Pad With 0 And Extract 2 Characters On The Left?

Oct 28, 2015

I have a table PLACE with a character column CODE

[Code] [nchar](4) NULL

I need to left pad the column with 0 if it is less than 4 characters long and extract the first 2 characters on the left into a new column COUNTY_CODE.

How can I do that in transact SQL?

I tried:

SELECT RIGHT(RTRIM('0000'+ISNULL([Code],'')),4)
FROM [Place]
WHERE [Place Code]='B' and [Code]='627'

And I got 0627. And how do I extract the first 2 characters?

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Left Join Vs Left Outer Join

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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Left Join Vs Left Outer Join

May 14, 2008

Hi,

Whats the diference between a left join and a left outer Join

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Transact SQL :: Select Between Days Record Of Every Month

Jun 29, 2015

I have 3 month of record in my table. if i pass 2 and 10, i need to select the record of between 2 and 10 days of record of every month. if i pass 10 and 20, it should select the record between 10 and 20 of every month. How to query for that?

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Transact SQL :: Select First And Last Record For Certain Date Range

Jun 16, 2015

I have a situation where an agent has number of activities for a certain date range. If an agent has multiple activities within certain date range, I would like BALANCE BEFORE from the first activity and BALANCE AFTER from the last activity. Here is my current SQL query that returns the following data:

DECLARE @BeginDate Datetime
DECLARE @EndDate Datetime
Set @BeginDate = '05-1-2015'
Set @EndDate = '05-31-2015'
SELECT
a.AgentName,
R.BALANCEBEFORE,

[Code] ....

AGENTNAME          BALANCE BEFORE  BALANCE AFTER          DATE
DOUGLAS              9738.75                9782.75                     2015-05-11
DOUGLAS              9782.75                9804.75                     2015-05-12
DOUGLAS              9804.75                9837.75                     2015-05-13

In the sample data above, ideally I would like my query to return data as follow:

AGENTNAME          BALANCE BEFORE                  BALANCE AFTER
DOUGLAS              9738.75 (from first activity)    9837.75 (from last activity)

Not sure how I can write sql query to accomplish this.

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Transact SQL :: Transpose Part Of Rows To Columns In Single Select Statement

Aug 31, 2015

Below. I have also pasted the current result of this query and the desired result.

Query can be updated to get the desired result as given below?

Query:
Select c.OTH_PAYER_ID, c.PAID_DATE, f.GROUP_CODE, f.REASON_CODE, f.ADJUSTMENT_AMOUNT
From MMIT_CLAIM_ITEM b, mmit_tpl c , mmit_attachment_link d, MMIT_TPL_GROUP_RSN_ADJ f
where b.CLAIM_ICN_NU = d.CLAIM_ICN and b.CLAIM_ITEM_LINE_NU = d.CLAIM_LINE_NUM and c.TPL_TS = d.TPL_TS and f.TPL_TS = c.TPL_TS and b.CLAIM_ICN_NU = '123456788444'

Current Result which I am getting with this query

OTH_PAYER_ID PAID_DATE GROUP_CODE REASON_CODE ADJUSTMENT_AMOUNT
5501 07/13/2015 CO 11 23.87
5501 07/13/2015 PR 12 3.76
5501 07/13/2015 OT 32 33.45
2032 07/14/2015 CO 12 23.87
2032 07/14/2015 OT 14 43.01

Desired/Expected Result for which I need updated query

OTH_PAYER_ID PAID_DATE GROUP_CODE_1 REASON_CODE_1 ADJUSTMENT_AMOUNT_1 GROUP_CODE_2
REASON_CODE_2 ADJUSTMENT_AMOUNT_2 GROUP_CODE_3 REASON_CODE_3 ADJUSTMENT_AMOUNT_3

5501 07/13/2015 CO 11 23.87 PR 12 3.76 OT 32 33.45 2032 07/14/2015 CO 12 23.87 OT 14 43.01

Using DB2.

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Transact SQL :: Using WITH Statement Rather Than Putting A SELECT In A JOIN?

Jun 18, 2015

Is there any reason to use the WITH statement rather than putting a SELECT in a JOIN? Does one method perform better or is it just a matter of preference?

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Integration Services :: How To Perform Left Restricted Join In Merge Join Transformation

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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'Left Outer Merge Join' Failing To Join Valid Row

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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Right Join Returns Same Results As Left Join

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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How To Join 3 Tables Using Left Or Right Join Keyword?

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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Why Is Left Table In LEFT JOIN Limited By Where Clause On Right Table

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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Left Only 1 Record... Delete The Others

Jan 22, 2008

Hi everyone... I have a problem on deleting a record. I accidentally duplicate the record.
I need to delete other records and left only 1 record based on each date and employeenumber.

supposing i have a table hrempshiftschedule
i have 3 fields... empno, shiftdate, and shifttype

sample data...
empno shiftdate shifttype
1 1/1/2008 S1
1 1/1/2008 S1
2 1/1/2008 S2
2 1/1/2008 S2
2 1/1/2008 S2
2 1/2/2008 S2
2 1/2/2008 S2
2 1/3/2008 S3
3 1/1/2008 S3
4 1/4/2008 S4
4 1/5/2008 S5

expected output....

empno shiftdate shifttype
1 1/1/2008 S1
2 1/1/2008 S2
2 1/2/2008 S2
2 1/3/2008 S3
3 1/1/2008 S3
4 1/4/2008 S4
4 1/5/2008 S5

pls help and guide me.... thanks

RON
________________________________________________________________________________________________
"I won't last a day without SQL"

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SQL LEFT JOIN Help

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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