Only 9999 Rows After MERGE JOIN In SQL Server BIDS

Feb 5, 2007

I've gote 2 Tables with about 50.000 rows and I left outer join them with MERGE JOIN.

The result are 9999 rows. Has anybody got the same problem. Maybe it's a bug!?

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Formatting A Select Of A Numeric Column As Format -9999.9999

Aug 25, 2006

scott writes "I am relatively new to SQL Server, but after a couple of hours searching help, I'm stuck.

I am trying to select a numeric column from a table and format it using sql. Desired format "-9999.9999" with leading sign and zeros. IS_NEGATIVE is a function to determine sign. The code below works, but seems inefficient.

Is there a better way?

SELECT
RIGHT(dbo.IS_NEGATIVE(ISNULL(COST,0)),1) + RIGHT(REPLICATE('0',10) + RIGHT(abs(CONVERT(decimal(9,5),COST)),10),10) AS 'PRICE'
FROM ORDERS"

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Merge Join - No Output Rows

Apr 24, 2008

Hi,

I have a problem with a Merge Join providing no output (when it should have 1890 rows). My Data Flow Task has 4 OLE Data Sources, 3 Multicasts, and 1 OLE Data Destination. I am experiencing the problem near the end of my data flow where two Multicasts create two parallel flows of data (see Level 1 below). I have two Merge Joins which join one leg from each multicast with a leg from the other multicast (see Level 2 below). Then the two remaining legs use a Merge to get my destination output (see Level 3 below).

I am experiencing my problem with the Merge Join (input A2, B2) --> (output C2) transformation. The Merge Join providing output C1 appropriately outputs 1890 rows, but C2 outputs 0 rows. Both Merge Joins are identical. The data is identically sorted prior to entering the problematic Merge Join and a DataViewer (Grid) verified that the data is appropriately entering in. Merge Join (input A2, B2) --> (output C2) has 667 rows as input A2 and 1890 rows as input B2 (using an inner join, just like the other merge join), but C2 baffles me with 0 rows of output (when it too should have 1890). I receive no Ouput errors and the execution completes showing all green.

Level 1
Multicast (output A1, A2) [667 rows]
Multicast (ouput B1, B2) [1890 rows]

Level 2
Merge Join (input A1, B1) --> (output C1) [1890 rows]
Merge Join (input A2, B2) --> (output C2) [0 rows]

Level 3
Merge (input C1, C2) --> (output D1) [1890 rows]*

I read about mysterious behavior with Merge Joins and have attempted modifying my EngineThreads property to values between 2 and 10, with no luck. Any help/ideas would be appreciated.

Thanks,

Devin

* Should be 3780 rows

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Merge Join: Nr Of Output Rows Unchanged When Amount Of Input Changes

May 25, 2007

Dear all,

I created a package that seems to work fine with a small amount of data. When I run the package however with more data (as in production) the merge join output is limites to 9963 rows, no matter if I change the number of input rows.

Situation as follows.

The package has 2 OLE DB Sources, in which SQL-statements have been defined in order to retrieve the data.

The flow of source 1 is: retrieving source data -> trimming (non-key) columns -> sorting on the key-columns.

The flow of source 2 is: retrieving source data -> deriving 2 new columns -> aggregating the data to the level of source 1 -> sorting on the key columns.

Then both flows are merged and other steps are performed.

If I test with just a couple of rows it works fine. But when I change the where-clause in the data source retrieval, so that the number of rows is for instance 15000 or 150000 the number of rows after the merge join is 9963.

When I run the package in debug-mode the step is colored green, nevertheless an error is displayed:

Error: 0xC0047022 at Data Flow Task, DTS.Pipeline: SSIS Error Code DTS_E_PROCESSINPUTFAILED. The ProcessInput method on component "Merge Join" (4703) failed with error code 0xC0047020. The identified component returned an error from the ProcessInput method. The error is specific to the component, but the error is fatal and will cause the Data Flow task to stop running. There may be error messages posted before this with more information about the failure.

To be honest, a few more errormessages appear, but they don't seem related to this issue. The package stops running after some 6000 rows have been written to the destination.

Any help will be greatly appreciated.

Kind regards,

Albert.

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Integration Services :: Merge Join Transformation - No Output Rows Redux

Aug 4, 2009

I am using SSIS in SQL Server Enterprise 2005. I have two OLE DB data sources from two disparate databases (IBM DB2 and Microsoft SQL Server), some columns from each of which are to be included in the merged output results. I have noted the various requirements in the forum postings with regard to sorting the OLE DB sources and specifying the output source columns as being sorted, as well as the requirement that the join fields in the two sources be close/exact matches. Yet, when I run this in VS, while the work area reflects the expected number of rows being input into the Merge Join transformation, no count is reflected as output from that transformation into the final destination table.Specifically, my two data sources (IBM DB2 and MS SQL) are configured as follows:

IBM DB2 contains an SQL statement that uses Cast operations to create the result columns.and an ORDER BY clause to ensure that the output is sorted by the desired two columns.. The OLE DB source property setting for IsSorted is set to true; the Output Columns folder column definitions for "key_ source_dtsy" and "key_source_dtrt" have their SortKeyPosition properties set to 1 and 2, respectively. Those field are both defined as data type DT_STR, with lengths of 4 and 2, respectively. Below is the Path metadata from the Data Flow Path editor from the path from this source:

IBM DB2 source"Name" "Data Type" "Precision" "Scale" "Length" "Code Page" "Sort Key Position" "Comparison Flags" "Source
Component""ID_CODE" "DT_STR" "0" "0" "10" "1252" "0" "" "Source F0005 User Defined Codes""CODE_DESCR_1" "DT_STR" "0" "0" "30" "1252" "0" "" "Source F0005 User Defined Codes""CODE_DESCR_2" "DT_STR" "0" "0" "30" "1252" "0" "" "Source F0005 User Defined Codes""key_source_dtsy" "DT_STR" "0" "0" "4" "1252" "1" "" "Source F0005 User Defined Codes""key_source_dtrt" "DT_STR" "0" "0" "2" "1252" "2" "" "Source F0005

User Defined Codes:

MS SQL contains an SQL statement that takes the columns as they are in the MS SQL table (no Cast operations needed); it also uses an ORDER BY clause to ensure the output is sorted by the join columns. The OLE DB source property setting for IsSorted is set to true; the Output Columns folder columns for "key_source_dtsy" and "key_source_dtrt" have their SortKeyPosition properties set to 1 and 2, respectively. Those field are both defined as data type DT_STR, with lengths of 4 and 2, respectively. Below is the Path metadata from the Data Flow Path editor from the path from this source:

MS SQL source"Name" "Data Type" "Precision" "Scale" "Length" "Code Page" "Sort Key Position" "Comparison Flags" "Source Component""id_code_name" "DT_I2" "0" "0" "0" "0" "0" "" "Source CodeName in db dwVdFY""key_source_dtsy" "DT_STR" "0" "0" "4" "1252" "1" "" "Source CodeName in db dwVdFY""key_source_dtrt" "DT_STR" "0" "0" "2" "1252" "2" "" "Source CodeName in db dwVdFY"

The Merge Join transformation specifies an INNER JOIN using the columns named "key_source_dtsy" and "key_source_dtrt" from the respective data sources.I know there are alternative ways of accomplishing my intent (Lookup, port MS SQL table to IBM DB2 so join can occur in SELECT statement, etc.; however, I'd like to use this functionality and assume that it should work.

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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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Merge Join (Full Outer Join) Never Finishes.

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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Problem Using Merge Join Transformation In Sql Server 2005(SSIS)

Aug 10, 2006

Hi,
I am pretty new to SSIS. I am transferring some rows from 2 source tables to 1 destination table.
The 2 source tables have 1000 rows.They act as the 2 inputs to a merge join transformation where i perform the join between the 2 tables based on a couple of fields. But for some reason the output of the merge join gives me about 1018 rows .Shouldnt the destination also have only 1000 rows?
How do i solve tis problem?

Thanks in advance
Sat

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SQL Server 2008 :: Collation Used By SSIS MERGE JOIN Task

Aug 27, 2012

Can the collation used by SSIS be changed or influenced during install or run time? We have found that our databases, that use a mandatory "LATIN1_GENERAL_BIN", have incorrect SSIS Merge Join output. Changing our database collation in testing didn't make a difference. What matters is the data. Which Windows collation is SSIS using?

Example Data:
FIRSTNAME
FIRSTNAME
FIRSTS-A-NAME
FIRSTS_A_NAME
FIRST_NAME
FIRST_NAME
FIRSTname
FIRSTname
FIRS_NAME

put in a Sort task before the Merge Join task as setting advanced properties isn't enough (as described by Eric Johnson here --> [URL] ......

We are using 64-bit SQL Server 2008 R2 w/ SP1 in Windows Server 2008 R2 ENT w/ SP1.

UPDATE from ETL team: Explicitly ordering the source with "COLLATE Latin1_General_CS_AS" seems to have the same effect as using a separate sort task. We don't feel that we can rely on our findings, however, unless we have documentation that this collation is what is behind SSIS.

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SQL Server 2012 :: Merge Multiple Rows Into One?

Nov 26, 2014

basically i have data like this

order_key comment
1 A
1 B
1 C
2 B
2 D

the data intends to be like this

order_key comment
1 A,B,C
2 B,D

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SQL Server 2012 :: How To Merge Multiple Rows Into One Row

Dec 24, 2014

I have a table that looks like this ...

idtype_codephone_num
11111-111-1111
12222-222-2222
21111-111-1111
32222-222-2222

I want to merge the data to look like this ...

idphone1 phone2
1111-111-1111222-222-2222
2111-111-1111NULL
3NULL222-222-2222

Basically if the type code is 1 one then move the data to column phone1, if the type is 2 then move it to column phone2.

This would be fairly simple if we always have type codes 1 and 2. But sometimes we can have type 1 and not type 2, or we could have type 2 and not type1.

Right now we only have 2 type codes. But, in the future we could be adding a 3rd type. So that would add a 3rd column (phone3).

Below is my code that I have written. I move the data into a temp table then list it. I am thinking of making this a view to my table. It works just fine. My question is, is there a better and more efficient way of doing this?

CREATE TABLE #Contacts (
id INT PRIMARY KEY,
phone1 VARCHAR(15),
phone2 VARCHAR(15)
)

-- Insert the records for type 1

INSERT INTO #Contacts
SELECT id,
phone_num,
NULL
FROM test1
WHERE type_code = '1'

-- Insert the records for type 2, if the id does not exist for type 1

INSERT INTO #Contacts
SELECT id,
NULL,
phone_num
FROM test1
WHERE NOT EXISTS (
SELECT 1
FROM #Contacts
WHERE #Contacts.id = test1.id
)
AND test1.type_code = '2'

-- if the id has both type 1 and 2, update the phone2 column with the data from type 2

UPDATE #Contacts
SET phone2 = test1.phone_num
FROM #contacts
JOIN test1 ON test1.id = #Contacts.id
WHERE type_code = '2'
SELECT id, phone1, phone2
FROM #Contacts
DROP TABLE #Contacts

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Super Join - Is Merge Join The Answer?

Nov 7, 2006

Is there a way to do a super-table join ie two table join with no matching criteria? I am pulling in a sheet from XL and joining to a table in SQLServer. The join should read something like ��for every row in the sheet I need that row and a code from a table. 100 rows in the sheet merged with 10 codes from the table = 1000 result rows.

This is the simple sql (no join on the tables):

select 1.code, 2.rowdetail
from tblcodes 1, tblelements 2

But how to do this in SSIS?

Thanks - Ken

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How Would You Convert A Hash Join Into A Merge Join?

May 6, 2008

I read that merge joins work a lot faster than hash joins. How would you convert a hash join into a merge join? (Referring to output on Execution Plan diagrams.)
THANKS

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SQL Server 2008 :: Merge Multiple Rows Of Same ID Into Single Row

Feb 19, 2015

I need the requirements of merging multiple rows of same ID as single row.

My Table Data:

IDLanguage1Language2Language3Language4
1001NULL JAPANESENULL NULL
1001SPANISH NULL NULL NULL
1001NULL NULL NULL ENGLISH
1001NULL NULL RUSSIAN NULL

Required Output Should be,

IDLanguage1Language2Language3Language4
1001SPANISH JAPANESERUSSIAN ENGLISH

How to achieve this output. Tried grouping but its not working also producing the same result.

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SQL Server 2008 :: How To Merge Two Rows Into One (conditions Or Pivot)

Jul 8, 2015

Merge two rows into one (conditions or Pivot?)

I have Temptable showing as

Columns:EmpName, Code, Balance

Rows1: EmpA, X, 12
Rows2: EmpA, Y, 10

I want to insert the above temp table to another table with column names defined below like this

Empname, Vacation Hours, Sicks Hours
EmpA, 12, 10

Basically if it is X it is vacation hours and if it is Y it is sick Hours. Needs a simple logic to place the apprpriate hours(Balance) to its respective columns. I'm not sure how I can achieve this in using Pivot or Conditions.

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SQL Server 2012 :: Merge Column Values Into Rows?

Aug 12, 2015

I need to merge column values (#Status.Status) based on OrderID onto #Orders.NewStausCombined field separated by commas .

CREATE TABLE #Status
(
ID INT IDENTITY (1,1) PRIMARY KEY,
OrderID INT,
Status VARCHAR(20)
)
INSERT INTO #Status ( OrderID, Status )

[code].....

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SQL Server 2012 :: Merge Multiple Rows From Single Table

Nov 17, 2014

I have resulting rows from a query similar to the following:

The data is coming from a single table that contains only one coverage code column and one coverage code date, but the end user wants the two coverage code types and dates combined into a single row. So the SELECT looks something like this:

SELECT
[Employee ID] = emp.employee_id,
[Coverage Code 1] = enr.coverage_code,
[Coverage Date 1] = enr.coverage_date,
[Coverage Code 2] = case when enr.product_type = 'Accident.Accident'
then enr.coverage_code else NULL end,

[Code] ....

I basically want to merge the like Employee ID's together into a single row like the following:

I know I have done this before and it is probably pretty simple.

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SQL Server 2008 :: MERGE Statement - Cannot Filter Set Of Rows In Target Table

Feb 10, 2015

I have a table:

declare tableName table
(
uniqueid int identity(1,1),
id int,
starttime datetime2(0),
endtime datetime2(0),
parameter int
)

A stored procedure has new set of values for a given id. Sometimes the startime and endtime are the same, in which case I update the value of parameter. Sometimes I add a new time range (insert statement), and sometimes I delete a time range (delete statement).

I had a question on merge, with insert, delete and update and I got that resolved. However I have a different question regarding performance of the merge statement.

If my target table has hundreds of millions of records and I want to delete/update/insert a handful of records, will SQL server scan the entire target table? I can't have:

merge ( select * from tableName where id = 10 ) as target
using ...

and I can't have:

merge tableName as target
using [my query] as source on
source.id = target.id and
source.starttime = target.startime and
source.endtime = target.endtime
where target.id = 10
...

This means I cannot filter the set of rows in the target table to a handful of records where id = 10.

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Merge Join = 99%

Apr 26, 2004

I have got a query in which a merge join is 99% of the cost .... and I am confused ... is not merge join supposed to be the fastest ??? Anyone seen this before ???

Any ideas why this could be happening ... and sorry ... do not ask me to post the code coz I will not be able to ...

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When Should We Use Merge Join?

Mar 3, 2008

Hi, all experts here,

Any advices for when will be a better way of using Merge join instead of other options?

Thank you very much and I am looking forward to hearing from you shortly.

Best regards,

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Merge Join

May 5, 2006

All,

I need to use Merge Join transformation to join two sources. One is from a PIVOT transformation and one of the output columns is ISSORTED, the other is from an OLE DB Source using a query. The Merge Join transformation requires both input source have to be sorted. I cannot find the ISSORTED property on the OLE DB Source!!
I tried to use Derived/ copy transformations but cannot find the property also. How can set the OLE query sorted in order to use the MergeJoin?

Thanks a lot

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Merge Join

Jun 15, 2007

Hello all,

I have a package where I use merge join for two sorted inputs and the output is stored in a raw file.

In another package, the raw file from above package is again merge joined with another sorted input. Now my question is....do we need to sort again the raw file from first package? or is it OK to set the isSorted property to True and define the sort keys?

Thank you.

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Merge Join Help

Dec 17, 2007

I am new to this SSIS.
I have a simple join query like this
select a.id from tbl_a a, tbl_b b where a.id = b.id and I want insert the result to my temp table.
the query results is 1500 rows.
but when I use merge join in SSIS, it only inserts to my temp table 4 rows.
I use inner join and I already set the IsSorted to true and specify the sort position for the columns in both source tables
In tbl_a, there are one million rows, in tbl_b, there are 2000 rows.
I don't know why the merge join cannot work out my task.Is there other way that I can just run this simple join query in SSIS to copy the data?
Please help, thanks in advance.

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Merge Join

Nov 4, 2005

Hi, folks:

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Merge Join

Apr 30, 2008

Hello,
I have a Merge Join transformation and when i sort values in OLEDB source the merge join fails, but if i use a sort transformation it works! Why??
Best regards,
Fred

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Merge Join - HELP

Sep 29, 2006

Hi,

I have a SQL Statatment:

SELECT * FROM TABLE1 AS A
    JOIN TABLE2 AS B
      ON A.X= B.X
    AND A.Y= B.Y
When i execute this code in sql server returns 549 lines. I created a package with two oledb sources one for each table, sorted the tables with fields X and Y after placed a Merge Join with the fields:
A.Y join B.Y order 1
A.X join B.X order 2
both fields with the Join Key checked
But my package return 411 lines.
What's happened?? :(
When a i have the code:
SELECT A.X, A.Y, B.X, B.Y
FROM TABLE1 AS A
    JOIN TABLE2 AS B
      ON A.X= B.X
When i did the join only one field SSIS worked fine, sql server returns 622 and SSIS returns 622 lines.
Please help-me...
Thanks,
André

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How To Join/merge Tables

Nov 21, 2006

Hi guys! I'm trying to figure out how to join 3 tables, but I can't seem to find a solution. What I want to do is to put table 1, table 2 and table 3 into table_merged.
table_merged = table 1 + table 2 + table 3
Is it possible to merge tables even if they have different fields?

Please help.
Onegai shimasu...

Thanks in advance!

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Possibly Merge Join Bug?

Mar 27, 2006

i'm merge joining 2 data sources, one is oracle and the other is excel...the problem is in the oracle source, it's a sql statement like:

select hdr.div_ord_no, hdr.mtr_no, hdr.prod_cd
from qctrl_div_ord_header hdr,
(select max(sub.eff_dt_from) min_eff_dt_from, div_ord_no
from qctrl_div_ord_header sub
group by div_ord_no
) tmp
where hdr.eff_dt_from = tmp.min_eff_dt_from
and hdr.div_ord_no = tmp.div_ord_no

having that sql statement, merging will come out with 0 rows

however, having a simple query like:

select hdr.div_ord_no, hdr.mtr_no, hdr.prod_cd
from qctrl_div_ord_header hdr

merging will come out with 2 rows

you may think that the data in the first sql statement is not there for the merge, which causing the 0 rows, however, the data is there, i'm only joining by one column and definitely the data is there, the merge result should be 2 rows for both query statements

i believe this is a problem with SSIS, anyway around this?

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SSIS Merge Join

Mar 6, 2008

I am working on an ssis package and i find an problem while using the merge join for merging 2 OLEDB Data sources .

data source 1 is : - The table formed my an sal server comand , that out put is given to a multicast since i want to sare that output amoung 2o other tables.

So the the left input for the merge join is OLEDB source , which contains direct data from source table

I am usong Inner join on one column

The problem is i am not getting the expected rows as out put of merge .

I tried to join the two tables in sqlserver query window and i am getting expected result

What could be the problem

The first table is

Reservations.ReservationManual

second table is Out put of the following query

Select Distinct B.ReservationID as R

from Property.Main A ,Reservations.Reservations B ,Reservations.ReservationRooms C

Where

A.propertyID = B.PropertyId And

C.ReservationID = B.ReservationID And

getdate() >=C.Until +A.ReservationOffLineDays

i am not getting the expected result here in SSIS package merge join

But if i try to execute the following in query editer in management studio i am getting the expected result !!

declare @temp as table

(ResID Varchar(50)

)

Insert into @temp

(ResID)

Select Distinct B.ReservationID as R

from Property.Main A ,Reservations.Reservations B ,Reservations.ReservationRooms C

Where

A.propertyID = B.PropertyId And

C.ReservationID = B.ReservationID And

getdate() >=C.Until +A.ReservationOffLineDays

select * from Reservations.ReservationManual A , @temp b

Where A.reservationID = b.resID

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Merge Join Or Union All

Oct 9, 2006

Hi,

I am trying to normalize data using the unpivot transform. I have to unpivot using more than one key so I have a multicast feeding into two unpivot transforms then into a sort transform. This is where my problem starts - I have tried using a Merge Join (inner Join) transform but dont get the expected result.

My original data looks like this:

Pk_ID

Choice1

Choice2

Feedback1

Feedback2

10

a

b

x

y

After the mulitcast - unpivot - Merge Join, the expected result is: (pk_newID is an identity)

Pk_newID

fk_ID

Choice

Feedback

563

10

a

x

564

10

b

y

However with a Merge-Join (inner join on pk_ID) I get

Pk_newID

fk_ID

Choice

Feedback

563

10

a

x

564

10

a

y

565

10

b

x

566

10

b

y

Is the Merge Join transform not the right choice?

Thanks

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Help Needed With Merge Join

Jan 10, 2008

I am trying to use the merge join example in the following link. To import new records only.

http://www.sqlis.com/311.aspx

The problem is that for some unkown reason the join is not woeking correctly. One of the records is incorrectly showing a NULL on the output. This would indicate that it would be a new record, but it is not it already exists in the new table.

I created a dummy table in SQL and executed the same join and I always get the right answer. What the heck could be wrong?

For example. Table A has 20 records Table B has 3 records. Table B has the new records I want to import into Table A. The package runs corectly the first time, only importing the 3 new records. Then the next time the package runs it shows 1 of the 3 records as being new still, and tries to import the record causing a PK error. Adding a watch to the MERGE output shows that the one record has a NULL on the join.

Please help this is driving me nuts.

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About Merge Join Component

Mar 30, 2007

Hi, I'm using a Merge Join Component of Inner Join type to retrieve from the right pipeline some records to append to the ones coming from left pipeline according to the join citerias defined on the compnent.
Is there any way to know which are the records coming from the left pipeline that doesn't match the join criterias?
In the following I'll try to do an axample.

LF pipeline:
Column0 Column1 Column2
1 aaaa aa11
2 bbbb bb11
3 cccc cc11
4 dddd dd11

RT pipeline:
ColumnA ColumnB
1 aa22
4 dd22

On exiting from the MergeJoin, defining ��Column0�? for LT as join key and ��ColumnA�? for RT and as output data all the columns of the LT pipeline and the only ColumnB from the RT pipeline it should be obtained the following records:

Column0 Column1 Column2 ColumnB
1 aaaa aa11 aa22
4 dddd dd11 dd22

and the records from the LT pipeline:
2 bbbb bb11
3 cccc cc11

shouldn't go in the output from the Merge Join Component.

What I need to know is which are these last lines because I need to manage them.
Thanks!

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