Removing Unused Output Columns
Nov 1, 2007
I apologise if this question has been asked before but I have spent ages searching these forums and the internet for an answer and I am yet to find one.
My problem is that I have a package which imports a column, lets call it 'Column A'. Column A is used to create other columns, lets say Columns B, C & D. This is done in a script using asychronous input and once completed column A is no longer used. Other tranformations occur to B, C & D including a split and then finally a merge together again, but all the time A seems to remain a valid input on all processes yet I never choose to use or output it. When I come to the merge process I am required to merge columns B, C & D but also A, surely this is inefficient. Furthermore when the package has run I get a warning telling me that Column A is not required and should be removed, but I can not seem to find anywhere to remove it from the pipe.
I am hoping that I am just missing something obvious here but I have been tearing my hair out so any help would be much appreciated!
Graham.
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Jan 22, 2008
Sometimes at the end of a project you'll end up with unused Tables,Stored Procs, Functions, and Views.Since there is not something like a 'SELECT' trigger ... what is thebest way for telling what is not being used by your solution? To turnon some kind of tracing?Any ideas?Thanks,Kelly GreerJoin Bytes!change nospam to yahoo
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Nov 13, 2015
We have transaction replication set up on one of our servers whose replicated DB is used for reporting purpose:
Now, the replicated database "D" of size 350 GB has mainly grown huge as compared to Published DB (200 GB) because of the index sizes at subscribed DB. Therefore:
I have found that Database D has one table of data size 15 GB, with rows 8349533 and index size 28 GB the biggest in the database. And adding have total of 109 Non clustered indexes:
On using SP_blitzindex i have found approx 50 NC indexes unused with below usage:
Reads: 0 Writes:273,243 and total size of indexes being 18 GB
Last User Seek
Last User Scan
Last User Lookup all '0'
0 singleton lookups; 0 scans/seeks; 0 deletes; 0 updates;
except for few 3 or 4 where updates are more than 4000.
Is this sufficient enough to delete all the above 49 unused NC indexes? And Can i create Missing index on Subscriber database?
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Aug 23, 2007
Dear Experts,
I'm working for an ERP company, for our product, there are around 2000 tables. in each table, we are using 10 extra columns for our future use. all these are using nvarchar(50) datatype.
almost 95% of the columns in these are not in use almost. those are having null value and in some columns, the values are like 0,1...
is this affects the performance?
please spare your valuble time
thank you very much
Vinod
Even you learn 1%, Learn it with 100% confidence.
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Feb 4, 2008
Hi,
I would like to get a list of all the unused columns, I have tons of files and fields in the package probably in the hundreds and I need to know which fields I am not using to see which fields are important not to miss out, so is there any way I can get them in a text file or any other format?
Thanks
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Jan 15, 2007
I have a flat file data source and SQL Server destination data flow. Only a subset of columns from the source are mapped to the destination. During execution SSIS returns DTS pipline warnings for every unmapped source column. Is some kind of transformation the only way to get rid of these warnings?
Also this data flow subsequently returns an error: [SQL Server Destination [1293]] Error: An OLE DB error has occurred. Error code: 0x80040E14. An OLE DB record is available. Source: "Microsoft SQL Native Client" Hresult: 0x80040E14 Description: "Could not bulk load because SSIS file mapping object 'GlobalDTSQLIMPORT ' could not be opened. Operating system error code 2(The system cannot find the file specified.). Make sure you are accessing a local server via Windows security."
I'm researching this error, but if anyone is familiar with it your advice would be appreciated. Thanks.
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Mar 14, 2001
Hi. How can I display output from a simple SQL query in Query Analyzer so that the column heading/broken underline
appearing above the column values is not displayed? Something akin to "set heading off".
Thanks
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May 28, 2008
I have a stored procedure that is currently utilizing a user defined function. I need to use these functions because I'm returning one row with general info (IE: Name, Title, etc), and within that same row I return all the fiscal years associated to the item as a single field in the result set. For example I would create the following SQL statement that calls the function below it. So for one row the data could look like "John Smith, Senior Developer, FY08 FY09 FY10". The function essentially concatenates multiple rows and returns a single VARCHAR with all of the FY's. Is it possible to acheive the desired functionality without using a User Defined Function here? This leads me into my next question. I notice in the SQL Profiler that any stored procedure that contains a User Defined Function actual runs the Select statement more than once.
What I mean is for example say the SELECT statment below returns one row. The particular result has 3 Fy's associated to (John Smith, Senior Developer, FY08 FY09 FY10). In the SQL Profiler I would see the select statement listed 3 times, one time for ever fiscal year. The only event I am capturing is "SP:Starting". So my profiler window will look similar to the following:
SP:Starting SELECT Name, Title, dbo.fnGetFiscalYears(ID) AS 'Fiscal Year' ..... SP:Starting SELECT Name, Title, dbo.fnGetFiscalYears(ID) AS 'Fiscal Year' ..... SP:Starting SELECT Name, Title, dbo.fnGetFiscalYears(ID) AS 'Fiscal Year' ..... SELECT Name, Title, dbo.fnGetFiscalYears(ID) AS 'Fiscal Year'
FROM myTable1 CREATE FUNCTION fnGetFiscalYears
2 (
3 @ItemID int
4 )
5 RETURNS VARCHAR(100)
6 AS
7 BEGIN
8 DECLARE @FY VARCHAR(100),@sep VARCHAR(3)
9 SET @sep=', '
10 --COALESCE all the FY's together to return them as
11 --a single VARCHAR
12 SELECT @FY = COALESCE(@FY + @sep,'') + 'FY' +
13 CONVERT(VARCHAR(2), FYID)
14 --FYID is an INT datatype corresponding to the last two digits of a year (EX: 8)
15 FROM tblItemsToFiscalYears
16 WHERE ItemID = @ItemID
17
18 RETURN @FY
19 END
20
21
I appreciate ANY help one may be able to give me...
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Feb 22, 2005
I'm executing the following...
select COL1, min(COL2) from TABLE group by COL1
the table has many duplicate entries, where COL2 is the primary key and unique, but its the duplicate COL1 entries that have to be removed.
I was hoping a simple
"delete from table where COL1 not in (select COL1, min(COL2) from TABLE group by COL1)"
would do the trick, but obviously in returning two columns from the subselect this won't work. Can I hide the COL2 output from the query that will be put in the subselect?
this is a one-off thing, so i'm not overly concerned about overhead or elegance. just need to make it so.
tia
a
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Feb 26, 2002
Hi,
Could you please tell me removing table columns with null value will reduce the datafile size.
Data file size needs to be reduced to make free space on the disk, Could please suggest what data type can be choosen to be removed from the existing table so that more space can be made(Char,varhchar,int,date etc )
Thanks
John Jayaseelan
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Aug 5, 2015
I have a query that I'm filtering using Customer ID, CustomerID = '12345', even though I need the query to filter that data, I don't need to see that column in my results. I tried removing it from my Select Distinct group but I'm guessing it needs to be there or the filter won't work(like I said, very green). Is there something that I can add to hide this column?
SELECT DISTINCT
RG.ResNumber,
ResWithSupp.SupplierID,
ResWithSupp.ServiceType,
RG.CustomerID,
[code]......
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Apr 3, 2007
I have a Report I need to hide subtotals and total and include detail only when I am exporting to excel. So, is there a way to capture that it is exporting to Excel? Possibly a way to capture the rs:Format=Excel?
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Feb 13, 2006
Seems obvious but I can't see how. How would I remove columns from a data flow so that columns which have been used earlier but are not needed for insert/update are taken out of the flow.
I'm asking because the data ends up in a update statement and the flow has got so big it is unreadable.
Cheers, Al
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May 23, 2006
Can someone please explain the difference between Output and External columns? I can't fathom why "Output" columns aren't good enough. In other words, what is there a need or value in having two types of "output" columns?
TIA,
Barkingdong
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May 12, 2005
I am trying to find a way how to query following data from a table that looks like this:
ColA ColB ColC
1 2 3
Output should look like this:
ColA
1
2
3
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Apr 2, 2002
I've got a question that I can't seem to find an answer for, I was hoping someone here might be able to point me in the right direction. I've set up a stored procedure that will email someone if any entries are added to a table . However, the output is garbled looking (see below)
Client Number SSN Client Name Old SD
New SD
------------- ----------- ---------------------------------------- --------
--------
800901 899-34-3482 John Smith 04/20/20
05/01/20
400909 144-23-0029 John Smith 04/09/20
04/11/20
447788 445-89-9967 kjl;j;j 04/05/20
04/12/20
300099 234-90-7815 John Johnson 04/08/20
04/15/20
What's happened is the client name field is too wide, so the New SD field kicks down to the next line. I'd like to clean this up. Is there a way I can either increase the length of the row before it moves to the next line, or can I re-size the client name field to match the size of the data. In other words, cli_name_vc is declared as a varchar(40). If the longest name that comes up in the query is 18 characters long, can I re-size the output so that it does not take up 40 characters?
Any help is greatly appreciated.
thanks,
-scott
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Oct 27, 2004
I have a table like:
ID Disc
----------------
1 BUSH
2 JOHN
1 GOLE
2 MIKE
I would like output depending on ID to put Disc into two columns. Like:
ID Disc1 Disc2
----------------------------
1 BUSH NULL
2 NULL JOHN
1 GOLE NULL
2 NULL MIKE
Any help will be appreciated. Thanks
ZYT
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Apr 24, 2012
I am trying to add two columns together and find all the entries that equal zero I have:
select table1.nbr, table2.itemvalue as CC
from table1, table2
where table1.nbr=table2.nbr and exists (select (OpnAc1+OpnAc2) as Open from table2
I want to take the sum of OpnAc1 and OpnAc2 and find all that equal 0, (meaning no open 1 or open 2)
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Feb 23, 2006
Using MySQL 5, MySQLQuery (latest). Complete Newbie,
I have the following query:
SELECT i.IndivId, i.Surname, i.First_Names, i.Parents,
(SELECT i.Surname FROM individuals i, families f
where (i.IndivId = f.father_ID) and (i.indivId = f.Family_ID))
as "father"
FROM individuals i
where i.Parents>0
order by i.Parents;
It returns nulls for the subselect. There are 2 tables, individuals and Parents. I am trying to use a father id. in the PArents table to cause the individual id. (being the father of the individual(s)) to be named in the father column. I have a feeling I'm going wrong here.
I think the query above is pretty self explanatory!
Many thanks.
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Aug 27, 2007
Hi Everyone,
I am trying to do a query where I need to use as little C# as possible to build my gridview. Basically I have a column called statusID. There are about 15 options for this column but I only want to count certain ones. I want to count when statusID = 3 and output that into a column called "fullUnitsUsed" but when the value is 4 or > 13 I want it to count and put the result into a column called "halfUnitsUsed". I also want it to count based on the month. To accomplish this I have used CASE and GROUP BY. This has worked to some extent. Currently if I COUNT for one month I get the correct number of fullUnitsUsed and halfUnitsUsed used for January. Unfortunately the query returns 2 records for the month. The first one has a value for fullUnitsUsed and halfUnitsUsed is NULL, the second record has fullUnitsUsed as NULL and halfUnitsUsed has the correct value. I was hoping to output one record where both fullUnitsUsed and halfUnitsUsed have data. My other problem is that if I test for the entire year (which is what this query is supposed to do) there are 5 records returned for each month, 3 of the records have fullUnitsUsed and halfUnitsUsed both as NULL and for the other 2, one has fullUnitsUsed with data and the other has halfUnitsUsed with data and the other column in both records is NULL. The values for fullUnitsUsed and halfUnitsUsed are counted for the entire year as well, which I only want it to count based on each month. Below is my query, any suggestions about how to approach this will be greatly appreciated. If any clarification is needed please let me know. Again if I could get this to work completely with SQL and not need to use any more C# than I have to it would be preferable.
SELECT People.lastName + ', ' + People.firstName AS fullName, Property.Name, NYSDDSORegion.Description, OpenDays.[month], OpenDays.maxOpenDays,CASE Attend.statusID
WHEN 3 THEN COUNT(Attend.statusID)
END AS fullUnitsUsed,CASE Attend.statusID
WHEN 4 THEN COUNT(Attend.statusID)
WHEN 14 THEN COUNT(Attend.statusID)
WHEN 15 THEN COUNT(Attend.statusID)
WHEN 16 THEN COUNT(Attend.statusID)
WHEN 17 THEN COUNT(Attend.statusID)
WHEN 18 THEN COUNT(Attend.statusID)
WHEN 19 THEN COUNT(Attend.statusID)
WHEN 20 THEN COUNT(Attend.statusID)
END AS halfUnitsUsed
FROM Attend INNER JOIN People ON Attend.personID = People.personID
INNER JOIN Property ON Attend.propertyID = Property.propertyID
INNER JOIN NYSDDSORegion ON Property.RegionID = NYSDDSORegion.RegionID
CROSS JOIN OpenDays
WHERE (Attend.attendDate BETWEEN '1/1/2007' AND '12/31/2007')
GROUP BY Property.Name, People.lastName, NYSDDSORegion.Description, People.firstName, OpenDays.monthID, OpenDays.[month], OpenDays.maxOpenDays, Attend.statusID
ORDER BY Property.Name, fullName, NYSDDSORegion.Description
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Jun 9, 2008
I'll show my schema first, then I'll explain what I'm doing:
--------------------------------------------------
Events
--------------------------------------------------
ID | E_Title
--------------------------------------------------
--------------------------------------------------
EventOptionGroups
--------------------------------------------------
ID | EOG_EventID | EOG_OptionGroupID
--------------------------------------------------
--------------------------------------------------
OptionGroups
--------------------------------------------------
ID | OG_Title
--------------------------------------------------
--------------------------------------------------
Options
--------------------------------------------------
ID | O_OptionGroupID | O_Description
--------------------------------------------------
--------------------------------------------------
EventRegistration
--------------------------------------------------
ID | ER_EventID | ER_Name
--------------------------------------------------
--------------------------------------------------
RegistrantOptions
--------------------------------------------------
ID | RO_EventRegistrationID | RO_OptionGroupID | RO_Selection
--------------------------------------------------
There are several events. Each event has several different sessions (stored in EventOptionGroups), and each session has a certain number of options (stored in Options).
A user can sign up for an event, and their information is stored in EventRegistration. They can choose an option for each session in the event. For each option they choose, a new row is added to RegistrantOptions.
For each row in EventRegistration, I want to output the user's information, and then the option they chose for each session in the event. Like this:
----------------------------------------------------------------------
E_Title | ER_Name | OG_Title1 | OG_Title2 | OG_Title3
----------------------------------------------------------------------
Event | Bob | O_Description1 | O_Description2 | O_Description3
So in that example, that event had 3 sessions.
Right now, I can only output E_Title and ER_Name, I don't know how to output the session information
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Apr 29, 2014
I am having a bit of trouble writing a query that dynamically outputs what I need.
I have a table that looks like this:
COL1 AAA BBB CCC
CAT 1 3 3
CAT 1 2 2
CAT 1 4 4
DOG 2 3 3
DOG 5 5 5
MICE 1 1 1
I need it to dynamically output based off COL1, the output should look like this. When there are more rows for CAT, it should output more columns. Kind of like merging the columns
COL1 AAA BBB CCC AAA BBB CCC AAA BBB CCC
CAT 1 3 3 1 2 2 1 4 4
DOG 2 3 3 5 5 5 NULL NULL NULL
MICE 1 1 1 NULL NULL NULL NULL NULL NULL
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Jun 7, 2006
Hi All,Currently the query returns 2006-03-27 00:00:00, can I make it output03/27/2006, I want to truncate the time, and replace the hyphens withforward slashes. Any ideas?Thanks In Advance,~CK
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Aug 7, 2006
When setting an output's "IsErrorOut" property to true, is it also possible to add additional columns to that error output?
I'd like to add a message beyond the standard errorCode and errorColumn columns, a column which is the "specific error message", not just a lookup on the errorCode.
IDTSOutput90 outError = ComponentMetaData.OutputCollection.New();
outError.Name = "Error Output";
outError.IsErrorOut = true;
// Add extra column here, e.g. ErrorMessage
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Jan 10, 2007
Hi All,
I have an OLE DB transform with a SQL Command of:
sp_get_sponsor_parent ?,? OUTPUT
where sp_get_sponsor_parent is defined like:
CREATE PROCEDURE [dbo].[sp_get_sponsor_parent]
@pEID int,
@results int OUTPUT
AS
BEGIN
.
.
.
END
I map the columns, refresh & OK out of the component without trouble, but on executing the package it fails during validation on this component. I'm utterly stumped.
Any light shed would be greatly appreciated.
Many thanks in advance,
Tamim.
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Oct 20, 2006
I created an Excel Source and used a query to get the data,i.e
SELECT F1,F2,F3,F4,F5,F6,F7 FROM [Fut Days$A20:G1480]
The query works fine, the preview returns the rows, but SSIS will not generate output Columns nor will it let me manually add them? Am I missing something?
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Jan 18, 2007
hello all,
i am trying to create a view but i keep getting the error 'View definition includes no output columns or no items in the FROM clause.'
below is the select statement that's the basis of my view. the explanation i got from the F1 help of enterprise manager was ...
View definition includes no output columns or no items in the FROM clause.
A view definition must have at least one table or table-structured object in the FROM clause, and must have at least one column in the select list. The view definition is missing one or both. Modify the view definition accordingly.
query:
select
Case_CaseId,
Logged,
CAST(DATEDIFF(minute, Logged, Waiting)/60.0 AS NUMERIC(9, 2)) AS Waiting,
CAST(DATEDIFF(minute, Logged, Investigating) /60.0 AS NUMERIC(9, 2)) AS Investigating,
CAST(DATEDIFF(minute, Logged, Rejected) /60.0 AS NUMERIC(9, 2)) AS Rejected,
CAST(DATEDIFF(minute, Logged, Resolved) /60.0 AS NUMERIC(9, 2)) AS Resolved,
CAST(DATEDIFF(minute, Logged, Solved) /60.0 AS NUMERIC(9, 2)) AS Solved,
CAST(DATEDIFF(minute, Logged, Closed) /60.0 AS NUMERIC(9, 2)) AS Closed
from
(
SELECT
Case_CaseId,
MIN(CASE WHEN case_stage = 'Logged' THEN Case_CreatedDate END) AS Logged,
MIN(CASE WHEN case_stage = 'Waiting' THEN Case_CreatedDate END) AS Waiting,
MIN(CASE WHEN case_stage = 'Investigating' THEN Case_CreatedDate END) AS Investigating,
AS Rejected, MIN(CASE WHEN case_stage = 'Resolved' THEN Case_CreatedDate END) AS Resolved,
MIN(CASE WHEN case_stage = 'Solved' THEN Case_CreatedDate END) AS Solved,
MIN(CASE WHEN case_stage = 'Closed' THEN Case_CreatedDate END) AS Closed
FROM
CaseProgress
GROUP BY Case_CaseId
) as temp
order by Case_CaseId
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Jun 21, 2006
Can I add Output Columns to the Script Transformation Editor using code? I have to execute a SQL Statement to determine the number of years we have the data for for an item and then create the columns for the months in those years and populate them with the quantities. So my question is can I create output columns to the Script Transformation Editor on the fly that is as it is being executed?
Any input will be good.
Thanks,
MShah
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Aug 17, 2007
I've read about the XML Source sometimes setting error output columns to DT_WSTR(255), but mine is now setting them to DT_NTEXT.
Anyone have any suggestions short of an XML editor? I'm concerned that I might do something to "refresh" the columns and cause the problem again.
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Feb 13, 2007
I am using a script component to transform data. In the script component I created a bunch of fields for the output. Is there any way to loop through that list of columns? Is there code I can use in the script component to access the names, data types, data etc?
I saw a lot of informaiton on the OutputColumnCollection as part of some IDTSOuput90 thing (greek to me). As best I can guess this is for creating your own new columns, but can I see what columns are already defined via the script interface?
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Jan 16, 2004
Hi guys
I want to format the result of a SQL Statement carried out in the query analyzer. Example:
suppose that you have this table:
col1 col2
------------------------- -----------------------
abcdefg bdbsjjdasjdh
bdfjsjdf hasdasjdasj
jhsdjhd asjdhashdas
hasjdhj ahsjdhajshdj
and I want this output:
col1 col2
---------- ----------------
abcdefg bdbsjjdasjdh
bdfjsjdf hasdasjdasj
jhsdjhd asjdhashdas
hasjdhj ahsjdhajshdj
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Aug 14, 2007
I would like my transformation to automatically create an output column for each input column. Any tips? I can't seem to determine which event to listen to or method to override.
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May 12, 2006
Hi there,
I'm getting an error in ascript transform shape.
When I try to write a value to an output column I'm getting an error saying the object reference cannot be set.
So my code looks like this - Row.OutputColumn = True
Any ideas??
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