Using Case With JOIN?
Oct 11, 2013
IN SP i have the
AND EI.IID =TL.IID AND EI.GID=TL.GID
and TL.QID=EI.ID WHERE EI.TYPE='P'
but i need and TL.QID=EI.ID only when
@QID>0
if not > 0 the i dont need to add and TL.QID=EI.ID
i tried below
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Feb 6, 2006
All - I'm having some trouble, and I hope someone can give me some assistance. I've scoured Google, and have only found stuff similar to what I already have.
My company has an old commercial ERP package. The package has a table called 'Lot_Bin_Tran' that tracks movements of parts based on the part number and a 'Tran_code' - a one-character field that represents what kind of transaction it is (receipt, shipment, inventory adjustment, etc...). Using those two pieces of information, you can join this single table to any of the tables that hold the information (such as receipts). I tried to write a left join from my transaction table to my primary tables to look for transaction records that have no corresponding records in the primary tables. Some SQL might be helpful here...
Code:
SELECTLBT.*
FROMLOT_BIN_TRANLBT(NOLOCK),
PRODUCEP(NOLOCK),
ORDERSO(NOLOCK),
ISSUESI(NOLOCK),
RECEIPTSR(NOLOCK),
LOT_BIN_XFERLBX(NOLOCK)
WHERELBT.PART_NO = 'OUR_PART_NUMBER_GOES_HERE'
AND
LBT.TRAN_NO *=
CASE LBT.TRAN_CODE
WHEN 'I' THEN I.issue_no
WHEN 'P' THEN P.prod_no
WHEN 'R' THEN R.receipt_no
WHEN 'S' THEN O.order_no
WHEN 'T' THEN LBX.tran_NO
END
AND
((I.ISSUE_NO IS NULL) AND (P.PROD_NO IS NULL) AND (R.RECEIPT_NO IS NULL) AND (O.ORDER_NO IS NULL) AND (LBX.TRAN_NO IS NULL))
when I run this, though - I get the following message...
Quote:
Msg 301, Level 16, State 1
Query contains an illegal outer-join request.
If I change the Left join to an inner join (using = instead of *=), I get a resultset, but not the one I want (since I can't detect nulls in all tables using inner join). Any ideas on how I can restructure?
Thanks!
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Oct 18, 2005
Is it possible to have a join with case statement in it?
i.e.
select * from a inner join b on
case [x] then a.xid = b.xid
case [y] then a.yid = b.yid?
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Oct 16, 2007
Hi, I have two tables TABLE_A and TABLE_BTABLE_A has rows like this:PROJECT_IDTASK_ID TASK_NAME1 100 One Hundred1 110 One Hundred Ten1 120 One Hundred Twenty2 200 Two Hundred3 300 Three Hundred3 310 Three Hundred TenTABLE_B has rows like this:PROJECT_IDTASK_IDAMOUNT1 10010001 11011002 NULL20003 3003000I want to inner join TABLE_A and TABLE_B such that if TASK_ID is available in TABLE_B, then join should happen on TASK_ID (on TABLE_A.TASK_ID=TABLE_B.TASK_ID), if TASK_ID is not available the join should happen on PROJECT_ID.For example for PROJECT_ID=2, there is no TASK_ID in TABLE_B (in this situation the join should be ON PROJECT_ID)How can we do a CASE like situation here?Thanks in advanceqA
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Mar 4, 2014
Is it possible to do something like this:
Select a.address from person p
join Addresses a on p.AddressPointer =
Case when @UseNewAddress=1 then a.NewAddress else a.OldAddress end
It gives a syntax error but I'm wondering if there's another way to do it.
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Apr 24, 2007
Hi,
I have a 2 different telephone number tables,
Table 1 has some numbers beginning with '0' i.e. 08001234567 and some without the '0' i.e 8001234567
on my Table2 i only have numbers starting with '0' i.e 08001234567.
I would like to make a INNER JOIN statement and check if the telephone number dont have a starting '0', then append to it and try to do the join so I get both set of data.
for example (this doesnt work however...):
SELECT *
FROM dbo.Calls INNER JOIN
ON
CASE WHEN SUBSTRING(dbo.CallData.TelephoneNumber, 0, 1) = '0'
THEN dbo.Calls.TelephoneNumber = dbo.Post.TelephoneNumber
ELSE '0' & dbo.Calls.TelephoneNumber = dbo.Post.TelephoneNumber <--append a 0 at the start
END CASE
AND dbo.Products.FK_Client = dbo.CallDataSets.FK_Client
GROUP BY dbo.CallDataSets.FK_Client
I hope you understand what I am trying to achieve here...
Any help is appreciated!
Many thanks,
Jon
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Sep 26, 2007
Hi All,
I am in need for to write the following query for a stored procedure in SQL Server 2000. Please observe the T-SQL code first.
Please disregard the numbers and Product Numbers, they are not the correct data. I used them for ease of understanding. But the query is identical.
Code Block
SELECT
C.iOwnerid,
MAX (C.DtInsertDate) AS [dtLastIssueDate]
INTO #Tble
FROM CustomerProduct C
CASE WHEN @vchSubscription = 'Weekly' THEN
INNER JOIN ProductMaster PM ON PM.chProductNumber = C.chProductNumber
AND ( ( PM.vchUser7='101557' AND PM.vchUser8='101557' ) -- Category and SubCategory
OR PM.chProductNumber IN (
'weekly1', 'Weekly2', 'Weekly3', 'Weekly4' )
)
AND C.dtInsertDate > = @dtIssueDate CASE WHEN @vchSubscription = 'Monthly' THEN
INNER JOIN ProductMaster PM ON PM.chProductNumber = C.chProductNumber
AND ( ( PM.vchUser7='101557' AND PM.vchUser8='101557' )
OR PM.chProductNumber IN (
'Jan', 'Feb', 'Mar', ....'Dec')
)
AND C.dtInsertDate > = @dtIssueDate
END
GROUP BY C.iOwnerid, PM.vchUser7, PM.vchUser8
my requirement is join the same table, but depending on the subscription type i have to join to different product numbers.
I hope you understand. I have been trying this since yesterday, but no luck.
Any help would be greatly appreciated.
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Jan 29, 2015
I am trying to use this logic into a query:
Select P.S,E.S,E.R
from Pack P(nolock)
join Exp E on P.Id=E.O
on E.R is null
case when E.R is not null then ''
else ''
end
where P.s='PLT000044'
I have to query two conditions joining the tables. when E.R is NULL and when E.R is not null. but the value is coming from the join between the 2 tables :P and E.
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Jun 22, 2006
I'm trying to join a table and based on the value of a given column I would join using the column in question, however if the column is NULL then I want to make the join without the column in the join. so I think I want to do something like this:
Case E.a
when NULL
then LEFT JOIN EPD ON EPD.b = D.b
AND EPD.SD = (SELECT MAX(E1.SD) FROM E1
WHERE E1.b = EPD.b AND E1.a = EPD.a AND E1.SD <= T.WD)
Else
LEFT JOIN EPD
ON EPD.a = D.a
and EPD.b = E.b
AND EPD.SD = (SELECT MAX(E1.SD) FROM E1
WHERE E1.a = EPD.a AND E1.b = EPD.b AND
E1.SD <= T.WD)
end
however T-Sql does not seem to like my Case statement mixed into my From/join clauses.
Thanks,
Mark E. Johnson
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Oct 26, 2006
I'm trying to generate the data for a 2-column table, where both columns are defined as NOT NULL and the second column is a uniqueidentifier.
In SQL Server Management Studio, this works fine:insert into table_3(column_a, column_b)
select table_1.column_a, (case when table_2.column_b is NULL then newid() else table_2.column_b end) as column_b
from table_1 left outer join table_2 on table_1.column_c = table_2.column_c
That is, column_b of the SELECT result has no NULL values, and all 35,986 rows are successfully inserted into a previously empty table_3. (If I comment out the INSERT INTO clause and project table_2.column_b instead of "(case ... end) as column_b", the SELECT result includes 380 rows with a NULL in column_b, so I know the case expression plus the outer join are working as expected.)
But when I use the SELECT query as the SQL command in an OLE DB Source component that is connected directly to the OLE DB Destination for the result table, I get this error:There was an error with input column "column_b" (445) on input "OLE DB Destination Input" (420
The column status returned was: "The value violated the integrity constraints for the column.".
And sure enough, when I modify the result table to allow NULL in column_b, truncate it, and re-run the data flow, it inserts the exact same 380 rows with a NULL in column_b among the 35,986 rows.
So what is SSIS doing to screw up the results of the SELECT command???
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Aug 12, 2012
An error is entered into the table, across two tables - tblErrors_ER and tblPolicyNumbers_ER - each error generates a PK (ErrorID) and can have any number of policy numbers which will be referenced by its own PK but linked to each error by its FK (ErrorID).I want to display each error in a Gridview in ASP.Net - columns included will be ErrorID, ErrorType, DateLogged from tblErrors_ER and PolicyNumber from tblPolicyNumbers_ER.If an Error has more than one policy number I only want to show the error once in the GridView with the word MULTIPLE under policy number.
tblErrors_ER
---------------
CREATE TABLE tblErrors_ER
{
ErrorID int,
ErrorType varchar(255),
DateLogged datetime,
[code]...
I have changed the Count(*) to Count(tblPolicyNumbers_ER.POlicyNUmber) which gives me the same undesired result as above. I have also left it as Count(*) and the entire CASE expression within the GROUP BY statement as suggest above which generated an error saying I can not use an expression in a group by clause.
If I leave Count(*) = 1 where it is in the original SELECT statement but swap the = for > then something happens, close to what I require but not as intended. It returns:
ErrorID ErrorType DateLogged PolicyNumber
---------------------------------------------------------------
1 Test 08/08/2012 Multiple
2 Test 08/08/2012 Multiple
this would suggest the original syntax is close to being accurate but I can not get it to work.
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Jul 20, 2015
I have data that I want at multiple granularities, 5,15,30 and 60 minutes. To reduce repetition, I have put them all in the same table, so that there is a column for 5,15,30 and 60 minutes, with a filtered index on each of the columns that removes the nulls. This means that each day will have 288 slots, but only 24 of the slots are filled in for 60 min data, and all of them are filled for 5 minute data.
I have another column that specifies the interval granularity, and my first thought was to access my data through a join, where I can use a CASE statement, and depending on the data granularity necessary, it will look at a different column:
INNER JOIN Data d ON
AND d.settlement_key =
CASE st.interval_granularity
WHEN 5 THEN [5_min_settlement_key]
WHEN 15 THEN [15_min_settlement_key]
WHEN 60 THEN [60_min_settlement_key]
ELSE NULL END
Despite the presence of the indexes on the columns, then the process seems to be quite slow, I think probably due to the fact that any query plan isn't going to know beforehand which of the columns it is going to use for any given dataset, until it actually starts to run, so it may not be optimised.
How I could optimise this based on the given structure? Maybe there are hints to be added to the join, or maybe I can clear the query plan each time the SQL is run? My other option for dealing with the data of different granularity was to use one column and repeat the data multiple times, each at the different granularity, but this makes my data, row and table sizes much higher, as we are adding just a column for each additional granularity. Would this work any better in future versions of SQL server, maybe with column store indexes?
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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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Aug 31, 2015
How can I change my T-SQL text editor from text sensitive to text insensitive?
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Jan 6, 2005
Hello:
I have created an SQL server table in the past on a server that was all case sensative. Over time I found out that switching to a server that is not case sensative still caused my data to become case sensative. I read an article that said you should rebuild your master database then re-create your tables. So after rebuilding the master database, a basic restore would not be sufficient? I would have to go and manually re-create every single table again?
Any suggestions?
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May 4, 2007
Can someone point me to a tutorial on how to search against a SQL Server 2000 using a case insensitive search when SQL Server 2000 is a case sensitive installation?
thanks in advance.
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Aug 17, 2005
We need to install CI database on CS server, and there are some issueswith stored procedures.Database works and have CI collation (Polish_CI_AS). Server hascoresponding CS collation (Polish_CS_AS). Most queries and proceduresworks but some does not :-(We have table Customer which contains field CustomerID.Query "SELECT CUSTOMERID FROM CUSTOMER" works OK regardless ofcharacter case (we have table Customer not CUSTOMER)Following TSQL generate error message that must declare variable @id(in lowercase)DECLARE @ID INT (here @ID in uppercase)SELECT @id=CustomerID FROM Customer WHERE .... (here @id in lowercase)I know @ID is not equal to @id in CS, but database is CI and tablenames Customer and CUSTOMER both works. This does not work forvariables.I suppose it is tempdb collation problem (CS like a server collationis). I tried a property "Identifier Case Sensitivity" for myconnection, but it is read only and have value 8 (Mixed) by default -this is OK I think.DO I MISS SOMETHING ????
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May 29, 2008
I am working in a SQL server database that is configured to be case-insensetive but I would like to override that for a specific query. How can I make my query case-sensitive with respect to comparison operations?
Jacob
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May 4, 2015
I have column with value of all upper case, for example, FIELD SERVICE, is there anyway, I can convert into Field Service?
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Aug 19, 2007
I am curious with using replication in sql server 2005 one way from db A (source) replicating to db B(destination) in which db A has a collation of CS and db B has a collation of CI. Will there be any problems with this scenario? Thanks in advance!
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Nov 5, 2007
I have a view where I'm using a series of conditions within a CASE statement to determine a numeric shipment status for a given row. In addition, I need to bring back the corresponding status text for that shipment status code.
Previously, I had been duplicating the CASE logic for both columns, like so:
Code Block...beginning of SQL view...
shipment_status =
CASE
[logic for condition 1]
THEN 1
WHEN [logic for condition 2]
THEN 2
WHEN [logic for condition 3]
THEN 3
WHEN [logic for condition 4]
THEN 4
ELSE 0
END,
shipment_status_text =
CASE
[logic for condition 1]
THEN 'Condition 1 text'
WHEN [logic for condition 2]
THEN 'Condition 2 text'
WHEN [logic for condition 3]
THEN 'Condition 3 text'
WHEN [logic for condition 4]
THEN 'Condition 4 text'
ELSE 'Error'
END,
...remainder of SQL view...
This works, but the logic for each of the case conditions is rather long. I'd like to move away from this for easier code management, plus I imagine that this isn't the best performance-wise.
This is what I'd like to do:
Code Block
...beginning of SQL view...
shipment_status =
CASE
[logic for condition 1]
THEN 1
WHEN [logic for condition 2]
THEN 2
WHEN [logic for condition 3]
THEN 3
WHEN [logic for condition 4]
THEN 4
ELSE 0
END,
shipment_status_text =
CASE shipment_status
WHEN 1 THEN 'Condition 1 text'
WHEN 2 THEN 'Condition 2 text'
WHEN 3 THEN 'Condition 3 text'
WHEN 4 THEN 'Condition 4 text'
ELSE 'Error'
END,
...remainder of SQL view...
This runs as a query, however all of the rows now should "Error" as the value for shipment_status_text.
Is what I'm trying to do even currently possible in T-SQL? If not, do you have any other suggestions for how I can accomplish the same result?
Thanks,
Jason
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Sep 6, 2007
I am working on a C#/asp.net web application. The application has a text box that allows a user to enter a name. The name is then saved to the database.
Before the name is saved to the database, I need to be able to check if the name already exists in the database. The problem here is that what if the name is in the database as "JoE ScMedLap" and somoene enters the name as "Joe Schmedlap" which already exists in the database,but just differs in case.
In other words how do deal with case sensitiviy issues.
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Jul 20, 2005
Yesterday I received a response to my CI/CS Collation problem and therecommendation was to try and restore a CI Collation database to a CSCollation database. After creating a blank CS database a full restore(Force restore over existing database) does change the Collation toCI. I'm unsure as to how I can restore without changing theCollation. Any suggestions?
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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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Dec 23, 2014
I have two select statements, in between select statement taking UNION ALL . I need to avoid the error
Warning: The join order has been enforced because a local join hint is used.
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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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Apr 14, 2015
I'm having trouble with a multi-table JOIN statement with more than one JOIN statement.
For each order, I need to return the following: CarsID, CarModelName, MakeID, OrderDate, ProductName, Total ordered the Car Category.
The carid (primary key) and carmodelname belong to the Cars table.
The makeid and orderdate belong to the OrderDetails table.
The productname and carcategory belong to the Product table.
The number of rows returned should be the same as the number of rows in OrderDetails.
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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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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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Jul 25, 2007
I'm using SQL Server 2005.
A piece of software I wrote starting timing out on a query that left outer joins a table to a view. Both the table and view have approximately the same number of rows (about 170000).
The table has 2 very similar columns, one is a varchar(1) and another is varchar(100). Neither are included in any index and beyond the size difference, the columns have the same properties. One of the employees here uses the varchar(1) column (called miscsearch) to tag large sets of rows to perform some action on. In this case, he had set 9000 rows miscsearch value to "g". The query then should join the table and view for all rows where miscsearch is set to g in the table. This query takes at least 20 minutes to run (I stopped it at this point).
If I remove the "where" clause and join all rows in the two tables, the query completes in about 20 seconds. If set the varchar(100) column (called descrip) to "g" for the same rows set via miscsearch, the query completes in about 20 seconds.
If I force the join type to a hash join, the query completes using miscsearch in about 30 seconds.
So, this works:
SELECT di.File_No, prevPlacements, balance,'NOT PLACED' as status FROM Info di LEFT OUTER HASH JOIN View_PP pp ON di.ram_file_no = pp.file_no WHERE miscsearch = 'g' ORDER BY balance DESC
and this works:
SELECT di.File_No, prevPlacements, balance,'NOT PLACED' as status FROM Info di LEFT OUTER JOIN View_PP pp ON di.ram_file_no = pp.file_no WHERE descrip = 'g' ORDER BY balance DESC
But this does't:
SELECT di.File_No, prevPlacements, balance,'NOT PLACED' as status FROM Info di LEFT OUTER JOIN View_PP pp ON di.ram_file_no = pp.file_no WHERE miscsearch = 'g' ORDER BY balance DESC
What should I be looking for here to understand why this is happening?
Thanks,
john
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Apr 24, 2007
Awesome! I don't alway get the email notification of whoever reply to the posting. I think it only work after I log off of the forum.
Scott
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Dec 24, 2013
We are trying to migrate from sql 2005 to 2012. I am changing one of the implicit join to explicit join. As soon as I change the join, the number of rows returned are fewer than before.
Below is my Implict join query
INSERT #RIF_TEMP1 (rf1_row_no,rf1_rif, rf1_key_id_no, rf1_last_date, rf1_start_date)
SELECT currow.rf0_row_no, currow.rf0_rif, currow.rf0_key_id_no, prevrow.rf0_start_date, currow.rf0_start_date
FROM #RIF_TEMP0 currow , #RIF_TEMP0 prevrow
[Code] ....
and below is explict join query
INSERT #RIF_TEMP1 (rf1_row_no,rf1_rif, rf1_key_id_no, rf1_last_date, rf1_start_date)
SELECT currow.rf0_row_no, currow.rf0_rif, currow.rf0_key_id_no, prevrow.rf0_start_date, currow.rf0_start_date
FROM #RIF_TEMP0 currow LEFT JOIN #RIF_TEMP0 prevrow
ON (currow.rf0_row_no = prevrow.rf0_row_no + 1)
[Code] ....
the count returned from both the queries is different.
I am not sure what am I doing wrong. The count of #RIF_TEMP0 is always 32, it never changes, but the variable @countTemp is different for both the queries.
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