Compare Performance (Execute SQL Task Insert And Data Flow Task)
Mar 12, 2008
I am using SQL 2005 SSIS. I am joining several large tables and then the move result into another table in the same database.
I would like know which method is faster:
Use Execute SQL Task to insert the result set to the target table
Use the Data Flow Task to insert the result set to the target table. (Use OLE DB source to execute SQL command and then use the SQL destination)
Could you tell me why then other is slower?
Thanks.
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Jun 14, 2006
Hi
I have an application like fetching records from the DataBase(MS Access 2000) and results i have to use in Script Task. At present i have used the record fetching query,connection string in Script itself. I would like to use in Independently. Is there any Tools like (Control Flow Tools like Execute SQL Task) are there to fetch the result set from Acccess and can use the fetching results in Script Task....
Thanks & Regards
Deepu M.I
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Mar 13, 2007
Hi Everyone,
In the data flow task, i have thosands of rows flowing, now just before inserting these rows into a table, i want to delete some rows in the destination table. For this, if i use the oledb command, then it will run several times. I think a script can do it but I want to avoid it because it would be an inefficient affair.
Please post your suggestions on this.
Regards,
Manu
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Jan 29, 2007
SQL statement within an OLE DB Command component is extremely slow (hours, days). Same SQL statement executed within a query window of SQL Server Management Studio takes only a few seconds. Using a fairly simple SQL UPDATE statement against a table with only 21,000 rows. Query:
UPDATE Pearson_Load
SET Process_Flag = 'E',
Error_Msg = 'Error: Missing address elements Address_Line_1, City, and/or State'
WHERE (Address_Line_1 = ' '
OR City = ' '
OR State = ' ')
AND Process_Flag = ' '
Any suggestions on how to improve the performance of this task or an alternate solution are appreciated. Thank you.
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Dec 27, 2007
I have a package that used to work fine, but after I imported it into a different existing solution and tried to run it, it always stalls during the data flow task at the very end.
It will run through and process all the rows and insert them into the destination except for the last chunk. The task blocks eventually all turn green as well, but then it never proceeds to the next task after the data flow. Looking at the Progress tab for the data flow task, I get the following:
Progress: Pre-Execute - 100 percent complete
[DTS.Pipeline] Information: Execute phase is beginning.
[DTS.Pipeline] Information: Post Execute phase is beginning.
Progress: Post Execute - 0 percent complete
Then it just stays at 0 percent for Post Execute. The program doesn't hang or anything, it just doesn't progress at all. I also just checked and I run the package from its original solution and it is now exhibiting the same behavior as well.
Any ideas what might be causing this or something to do to try and figure it out or at least get more information about what might be causing it?
Thanks.
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Dec 28, 2007
Hi,
I'm trying to implement an incremental data pull (Oracle to SQL) based on Andy's blog:
http://sqlblog.com/blogs/andy_leonard/archive/2007/07/09/ssis-design-pattern-incremental-loads.aspx
My development machine is decent: 1.86 GHz, Intel core 2 CPU, 3 GB of RAM.
However it seems the data flow task gets hung whenever I test the package against the ~6 million row source, as can be seen from these screenshots. I have no memory limitations on the lookup transformation. After the rows have been cached nothing happens. Memory for the dtsdebug process hovers around 1.8 GB and it uses 1-6 percent of CPU resources continuously. I am not using fast load to insert new records into my sql target table. (I am right clicking Sequence Container 3 and executing this container NOT the entire package in the screenshots)
http://i248.photobucket.com/albums/gg168/boston_sql92/1.jpg
http://i248.photobucket.com/albums/gg168/boston_sql92/2.jpg
http://i248.photobucket.com/albums/gg168/boston_sql92/3.jpg
http://i248.photobucket.com/albums/gg168/boston_sql92/4.jpg
http://i248.photobucket.com/albums/gg168/boston_sql92/5.jpg
http://i248.photobucket.com/albums/gg168/boston_sql92/6.jpg
The same package works fine against a similar test table with 150k rows.
http://i248.photobucket.com/albums/gg168/boston_sql92/7.jpg
http://i248.photobucket.com/albums/gg168/boston_sql92/8.jpg
The weird thing is it only takes 24 minutes for a full refresh of the entire source table from Oracle to the SQL target table.
Any hints,advice would be appreciated.
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Sep 28, 2007
I have created an SSIS Package that takes data in an excel file and writes it to an Oracle Database. The excel file has 5 columns, but the database tabls has many additional columns. I would like to default some of these other columns for this job. For instance, I want to set the created and updated times to the time when the job ran, and set some other fields to values that will be consistent for every row in the job.
How do I accomplish this?
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May 31, 2006
Hi Guys,
The way I understand a Data Flow Task is that it inserts the rows from the source to destination one by one. Is there a way to make it act like a bulk insert task? We have been experiencing performance issues when inserting a lot of rows from one table to another. If there's no way to actually do it, can a bulk insert task functionality be scripted? Coz what I need is a table to table insert, and the bulk insert task only accepts data files as sources.
Thanks!
Kervy
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May 4, 2006
Hi,
I am trying to create a simple BI Application for SSIS. In Visual Studio 2005 I just get a Data Flow Task from the toolbar and add it to the project. When I double click it I get the following error:
The task with the name "Data Flow Task" and the creation name "DTS.Pipeline.1" is not registered for use on this computer.
Then when I try to delete it it gives this other error:
Cannot remove the specified item because it was not found in the specified Collection.
I am creating this application in an administrator account in this computer, so I doubt the problem is related to permissions. I am running SQL Server 2005 and Visual Studio 2005 in WinXP Tablet PC Edition.
Any suggestions why this is happening and how to fix it?
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Oct 2, 2007
I have a stored procedure that is executed via a sql script task that returns a full result set. I map this result set to a variable or object type. Is there a way to use this variable as a data source in a subsequent data flow task?
A.
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May 31, 2007
I have an SSIS Package which is designed to import log files. Basically, it loops through a directory, parses text from the log files, and dumps it to the database. The issue I'm having is not with the package reading the files, but when it attempts to write the information to the db. What I'm seeing is that it will hit a file, read 3000 some lines, convert them (using the Data Conversion component), and then "hang" when it tries to write it to the db.
I've run the SQL Server Profiler, and had originally thought that the issue had to do with the collation. I was seeing every char column with the word "collate" next to it. On the other hand, while looking at the Windows performance monitor, I see that the disk queue is maxed at 100% for about a minute after importing just one log file.
I'm not sure if this is due to the size of the db, and having to update a clustered index, or not.
The machine where this is all taking place has 2 arrays- both RAID 10. Each array is 600 GB, and consists of 8 disks. The SSIS package is being executed locally using BIDS.
Your help is appreciated!
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Dec 20, 2007
Hi,
I'm trying to get a record count out of a databse using OLE DB Source and row count tasks but keep getting an error. I set up a variable as int32 and select the variable name in the row count task and when I go to the Input Columns tab to select a field to count, it gives me this error:
Error at Data Flow Task[Row Count[505]]: The component "Row Count" (505) has forbidden the requested use of the input column with lineage ID 32.
I don't even know what this means?
thanks,
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Jan 29, 2008
I need to call a stored procedure to insert data into a table in SQL Server from SSIS data flow task.
I am currently trying to use OLe Db Destination, but I am not sure how to map inputs to OLE DB Destination to my stored procedure insert.
Thanks
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Nov 2, 2006
I'm importing a large csv file two different ways - one with Bulk Import Task and the other way with the Data Flow Task (flat file source -> OLE DB destination).
With the Bulk Import Task I'm putting all the csv rows in one column. With the Data Flow Task I'm mapping each csv value to it's own column in the SQL table.
I used two different flat file sources and got the following:
Flat file 1: Bulk Import Task = 12,649,499 rows; Data Flow Task = 4,215,817 rows
Flat file 2: Bulk Import Task = 3,403,254 rows; Data Flow Task = 1,134,359 rows
Anyone have any guess as to why this is happening?
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Jun 7, 2006
How can i insert data into an excel sheet using an Execute Sql Task? is it possible?
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Feb 23, 2007
Hi,
I created a package with SQL 2005. The package gets the Access DB and then inserts it into SQL Server.
If I open the package in .NET, I can see the SQL Task and Data Flow Task. The SQL Task has a property sqlstatementsource, which has the necxessary SQL code to create the tables.
How can I tell the SQL Task to recompile the SQL code if I give it another DB name, because the tables differ and don't map in the Data Flow Task
Thanks
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Jun 21, 2007
OK. I give up and need help. Hopefully it's something minor ...
I have a dataflow which returns email addresses to a recordset.
I pass this recordset into a ForEachLoop configuring the enumerator as (Foreach ADO Enumerator). I also map the email address as a variable with index 0.
I then have a Execute SQL task which receives this email address as a varchar variable (parameter 0) which I then use in my SQL command to limit the rows returned. I have commented out the where clause and returned all rows regardless of email address to try to troubleshoot this problem. In either event, I then use a resultset to store the query result of type object and result name 0.
I then pass this resultset into a script variable to start parsing the sql rows returned as type object. ( I assume this is the correct way to do this from other prior posts ...).
The script appears to throw an exception at the following line. I assume it's because I'm either not passing in the values properly or the query doesn't return anything. However, I am certain the query works as it executes just fine at the command prompt.
Try
ds = CType(Dts.Variables("VP_EMAIL_RESULTS_RS").Value, DataSet)
My intent is to email the query results to each email address with the following type of data by passing the parsed data from the script to a send mail task. Email works fine and sends out messages but the content is empty. I pass the parsed data as string values to the messagesource and define the messagesourcetype as a variable in the mail task.
part number leadtime
x 5
y 9
....
Does anyone have any idea what I might be doing wrong?
thanks
John
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Aug 6, 2007
HI,
I have been trying to solve the locking problem from past couple of days. Please help mee!!
Scenario:
--------------
I have a SSIS package in which 2 data flow tasks. 1st data flow task deletes records from a 5 tables and the 2nd data flow task should insert records into 1 of the five tables after the success of 1st data flow task. This scenario runs in Transacation.
The above scenrio in the 2nd data flow task hangs in runtime. It does not complete. with sp_who2 command i could see that there is an intent share lock(LK_M_IS) on the table and the status is SUSPENDED.
I dont know how to come out of this locking. Please help.
Thanks ,
Sunil
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May 18, 2008
SSIS Newbie Question:
I have a simple Control Flow setup that checks to see if a particular table exists. If the table does not exists, the table is created in an alternate path, if it does exist, the table is truncated before moving to a file import Data Flow that uses an OLE DB Destination to output the imported data.
My problem is, that I get OLE DB package errors if the table the OLE DB Destination Container references does not exist when I load the package.
How can I over come this issue? I need to be able to dynamically create the table in an earlier step, then use that table to import data into in a later step in the workflow.
Is there a switch I can use to turn off checking in the OLE DB Destination Container so that it will allow me to hook up the table creation step?
Seems like this would be a common task...
Steps:
1. Execute SQL Task to see if the required table exists
2. Use expresions to test a variable to check the results of step 1
3. If table exists, truncate the table and reload it from file in Data Flow using OLE DB Destination
4. If table does not exist, 1st create it, then follow the normal Data Flow
Can someone help me with this?
Signed: Clueless with a deadline approaching...
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Nov 20, 2007
Hi, I'd like to know which is the best choice to execute a store procedure that execute transformations from table to files using bcp command, 2 millions rows everyday (i'ts a Data Warehouse database). So in the sql task in connectionType I had choiced ADO.NET is the best option?
Thanks
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Dec 4, 2007
Hi
I have a data flow task. If it completes I should update a flag in the database. So How I can I know if the
data flow task has completed or not.
Thanks
Sai
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Feb 5, 2007
I have a table which has been loaded from various source feeds. The SourceId relates to the source name and the SourceCompanyId is the sources primary key for the company. I am basically trying to create one row with all the SourceCompanyIds in my column headers. What data flow tasks would be necessary in SSIS?
The structure of the final table is:
CREATE TABLE [dbo].[Company](
[CompanyId] [int] IDENTITY(1,1) NOT NULL,
[CompanyName] [varchar](75),
[CIK] [varchar](10),
[Ticker] [varchar](10),
[Source1CompanyId] [int] NULL,
[Source2CompanyId] [int] NULL,
[Source3CompanyId] [int] NULL,
[Source4CompanyId] [int] NULL,
[Source5CompanyId] [int] NULL,
[Source6CompanyId] [int] NULL,
CONSTRAINT [PK_Company] PRIMARY KEY CLUSTERED
(
[CompanyId] ASC
)WITH (IGNORE_DUP_KEY = OFF) ON [PRIMARY]
) ON [PRIMARY]
=================================
The table in which contains all the company data
CREATE TABLE [dbo].[SourceCompany](
[SourceId] [int] NOT NULL,
[SourceCompanyId] [varchar](10) ,
[SourceCompanyName] [varchar](75),
[CIK] [varchar](10),
[Ticker] [varchar](10),
CONSTRAINT [PK_SourceCompany] PRIMARY KEY CLUSTERED
(
[SourceId] ASC,
[SourceCompanyId] ASC
)WITH (IGNORE_DUP_KEY = OFF) ON [PRIMARY]
) ON [PRIMARY]
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Jul 1, 2015
I'm using SSIS in Visual Studio 2012. My Execute SQL Task calls a Stored Procedure where I have a TRY-CATCH. Last week there was a problem and the CATCH was executed and logged an error to my error table, but for some reason the Execute SQL Task didn't fail. Is there a setting to make the Execute SQL Task fail when an SP encounters a failure?
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Dec 2, 2005
I have a SQL Task that calls a stored procedure and returns an output parameter. The task fails with error "Value does not fall within the expected range." The Stored Procedure is defined as follows: Create Procedure [dbo].[TestOutputParms] @InParm INT , @OutParm INT OUTPUT as Set @OutParm = @InParm + 5 The task uses an OLEDB connection and has a source type of Direct Input. The SQL Statement is Exec TestOutputParms 7, ? output The parameter mapping is: Variable Name Direction Data Type Parameter Name User::OutParm Output LONG @OutParm
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Mar 28, 2007
In the Control flow tab, I have an Execute SQL Task that outputs full Result set into a variable of an object type. Now how can I write the contents of the Full Result Set into a text file using Script Task. I also want to format the following way while I output into a file:
Column Name 1 : Column Value
Column Name 2: Column Value and so on
I tried writing the contents of the Object Variable into a file, but the file had an output of single word: System.__ComObject.
Code for Writing the Full Result Set into a Text File
Dim RSsqloutput as String = Dts.Variables("objVariable").Value.ToString
Dim strVal as String = "File completed on " & Now() & vbCrLf & "------------------------------------------------------" & vbCrLf
oLogFile.WriteAllText("C:MyFile.txt", strValue)
oLogFile.WriteAllText("C:MyFile.txt", rsSQLOutput)
I went through this link that explains how to write XML Result Set into a File, But this doesn't help as it writes in XML format.
Would you please give me a hint of code how I can go upon.
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Dec 12, 2007
Hi all, I am getting the following when trying to import text coloums from execl to SQL server 2005. Any ideas?
Error at Data Flow Task [Destination] Coloums "blar" and "Blar_name" cannot convert between unicode and non-unicode sting types.
Any help would be great.
Thanks
Dave
Dave Dunckley says there is a law for the rich and a law for the poor and a law for
Dirty Davey.
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Nov 14, 2007
Hi frns,
I am new to SSIS. I need some help in designing the below dataflow task.
-- Teacher creates several tasks and each task is assigned to multiple students
-- The teacher table contains contains all the tasks created a every teacher
use ods
go
create table teacher
(
yr int,
tid int,
tname varchar(20),
taskid int
)
insert into teacher values(2007,101,'suraj','task1')
insert into teacher values(2007,101,'suraj','task2')
insert into teacher values(2007,102,'bharat','task3')
insert into teacher values(2007,103,'paul','task4')
insert into teacher values(2007,103,'paul','task5')
insert into teacher values(2007,103,'paul','task6')
-- Teacher "suraj" has created 2 tasks
-- Teacher "bharat" has created 1 task
select * from ods..teacher
yr tid tname taskid
============================
2007 101 suraj 1111
2007 101 suraj 1122
2007 102 bharat 2222
-- Students table contains studentid(sid),teacherid(i,e tid ) & taskid
drop table students
create table students
(
yr int,
sid varchar(10),
tid int,
taskid varchar(10)
)
truncate table students
insert into students values(2007,'stud1',101,'task1')
insert into students values(2007,'stud1',101,'task2')
insert into students values(2007,'stud2',101,'task1')
insert into students values(2007,'stud2',101,'task2')
--Note : stud1,stud2 comes under teacher with tid "101"
insert into students values(2007,'stud3',102,'task3')
-- Note : stud3 and stud4 comes under teacher with tid "102"
insert into students values(2007,'stud4',103,'task4')
insert into students values(2007,'stud4',103,'task5')
insert into students values(2007,'stud4',103,'task6')
insert into students values(2007,'stud5',103,'task4')
select * from students
yr sid tid taskid
----------------------------
2007 stud1 101 task1
2007 stud1 101 task2
2007 stud2 101 task1
2007 stud2 101 task2
2007 stud3 102 task3
2007 stud4 103 task4
2007 stud4 103 task5
2007 stud4 103 task6
2007 stud5 103 task4
Now in my target table i need to load the data in a such a way that
use targetdb
go
drop table trg
go
create table trg
(
yr int, -- data should load from teacher.yr
tid int,
taskid int(20),
cnt int
)
Mapping in target column and value to be loaded
==================================================
yr -- teacher.yr
tid -- teacher.id
taskid -- this need to start a new sequence of numbers starting from 1 for each teacher and dont want the task id to be copied as it is.
cntofstudents -- need to count no of students from "students" table for a given teacher and for his assignment
For example for teacherid "101" and taskid "task1" there are 2 students
again for the same teacher "101" and taskid "task2" there are 2 students
For teacher "102" and taskid "task3" there is only 1 student
Similary for teacher "103"
Relation
========
Teacher table | Students Table
yr | yr
tid | tid
After i run the ETL the data should look as follows :
insert into trg values(2007,101,1,2)
insert into trg values(2007,101,2,2)
insert into trg values(2007,102,1,1)
insert into trg values(2007,103,1,2) -- task4 is created by teacher "103" and assigned to 2 students stud4 and stud5
insert into trg values(2007,103,2,1) -- task5 is created by teacher "103" and assigned to 1 student i.e stud4
insert into trg values(2007,103,3,1) -- task6 is created by teacher "103" and assigned to 1 student i.e stud5
Note : If u observer the values in 3rd column of the trg table, instead of directly mapping the taskid we need to generate a separate sequence for every teacher.
BottomLine : for each and every task created by each teacher there should be a unique record along with the count of students in "STUDENTS" table
Can anyone help me out in designing the Data Flow task for this Functionality.
Thanks,
Manu
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May 24, 2007
Hi there. I'm trying to learn SSIS, please, help me. I have 2 questions:
1)
There are 2 databases on 2 different servers. I need to get data from Table1(database1) and put it to Table2(database2). But I have to insert rows, which ID is not exists in Table2. How Can I do necessary filter?
2)
In the OLE DB DataSource Component I have used SQL Command(it's simplified):
declare @TmpTable TABLE (WorkCode int not null);
INSERT INTO @TmpTable (WorkCode)
select WorkCode
from Table1
SELECT WorkCode
FROM @TmpTable
SSIS Package works without any exception. But there is no any inserted record in destination table. If I try similar query without temporary table - it works good. Why?
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Jan 7, 2008
Hi,
I have SQL Server 2005 Express edition on my machine. On an SSIS project in BIDS, when i drag a "Data Flow Task" to the package it returns the following error:
The designer could not be initialized. (Microsoft.DataTransformationServices.Design)
Does this has anything to do with the fact that i don't have SSIS installed on my machine?
I thought that SSIS was only needed (on my machine) for the runtime, just to run the packages. To create and edit the pachages i need to install SSIS on my machine too? this doesn't makes sense, maybe it's another problem.
Can anyone help me on this?
Thank you,
Rafael Augusto
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Jul 3, 2007
I am having problems with the Data Flow task. It does not even show up in the list of items to drop into the SSIS project.
If I go to the Data Flow tab and hit create, I get the follow error. I have tried repairing and reinstalling, but nothing seems to clear up the error. Without rebuilding my machine, is there anyone who knows how to get the Data Flow Task reinstalled properly?
Thanks
Wayne
TITLE: Microsoft Visual Studio------------------------------Registration information about the Data Flow task could not be retrieved. Confirm that this task is installed properly on the computer. ------------------------------ADDITIONAL INFORMATION:TaskHost "{C3BF9DC1-4715-4694-936F-D3CFDA9E42C5}"' is not installed correctly on this computer. (Microsoft.DataTransformationServices.Design)For help, click: http://go.microsoft.com/fwlink?ProdName=Microsoft%u00ae+Visual+Studio%u00ae+2005&ProdVer=8.0.50727.762&EvtSrc=Microsoft.DataTransformationServices.Design.SR&EvtID=TaskHostNotInstalled&LinkId=20476------------------------------BUTTONS:OK------------------------------
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Jul 12, 2007
I have a simple data flow task setup...
2 ADO.NET connection managers, each referencing a DSN pointed to a Unidata database.
2 DataReader sources, each using a single ADO.NET connection managers, running a simple SELECT statement from a table.
I have a Union All transform setup to merge the data and write to a OLE DB Destination (SQL05 database)
When I run the package, each source will validate, but only one will execute. The other source will do nothing. The data source will be colored yellow, and will just sit there. The package will just sit, almost like it is waiting for input.
This behavior is not consistent, however. It varies which data source will hang, pretty much 50-50. About 25% of the time, both sources will execute, and all rows will be written to the destination.
Any help is appreciated.
thanks
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Dec 8, 2005
I have a Windows XP X64 machine with SQL 2005 Developer and VS 2005 Team Edition for Architects on it. For the most part it appears that all normal VS and SQL functions are working properly with the exception of SSIS. If I open the developer studio and drag a Data Flow Task onto the design surface I get the message below. I have tried doing an unistall and reinstall of Integration Services as well as a repair on VS 2005 with no success. I've searched the web and newsgroups and can't find any mention of the problem I'm having. Any help greatly appreciated.
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Aug 13, 2007
Hi All,
I wanna know if we can have more than one "OLEDB Destination" within a Data Flow Task, I want to use the same data flow and write to two different tables in a database with some changes. If we cannot do this within the same data flow what is the best way to do this.
Thanks
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