SQL Server 2014 :: Using WHERE Not Exists For A Fact Table Load?
Oct 20, 2014
I have a stored procedure in that attempts to perform a WHERE NOT EXISTS check to insert new records. If the table is empty, the procedure will load the table. However, an insert does not occur when a change to one or more source fields occurs against an existing record. The following is my code:
declare
@Created_By nchar(50)
,@Created_Date datetime
,@Updated_By nchar(50)
,@Updated_Date datetime
select @Created_By = system_user
[code]....
I expected that when one of the source values of any field in the second WHERE clause changes, that the procedure would insert a new record. Why is this not happening? One other note: I am not 'allowed' to use MERGE.
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Oct 26, 2015
Say you have a fact table with a few columns that all reference the same key column in a dimension table, you want to write a view to return the information for those keys?
USE MyTestDB;
GO
SET NOCOUNT ON;
IF OBJECT_ID ('dbo.FactTemp' ,'U') IS NOT NULL
DROP TABLE dbo.FactTemp;
[Code] ....
I'm using very small data at the moment, and the query plan and statistics don't really say which way.
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Jun 21, 2015
Previously same records exists in table having primary key and table having foreign key . we have faced 7 records were lost from primary key table but same record exists in foreign key table.
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Aug 25, 2006
Hi All,
I am just curious to know how I can load data from a data warehouse to an Analysis Service Cube (both to the fact tables and dimensions).
Does any body have some way to achieve this?
I appreciate if any body provide me a good material which describe this scenario.
Sincerely,
--Amde
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Sep 24, 2015
I have a transaction table having about 40 crore rows in source. It don't have timestamp and unique key columns. It have only Bill_month and Bill_Year columns. Actually for loading this table into staging I have added a new datetime column by adding default bill_date as 01. Then
* First we delete last 3 month data from staging tables.
* Get last 3 months data from source table.
* Load that 3 months data from source to staging table.
We do this because we only get update for last three months data. Now I have to include this transaction table as Fact table in DW. What will be the best practice for loading the fact table by picking data form staging table. Also we have to look up with dimensions for Foreign Keys.
* Should I implement the same method of deleting last 3 months records and loading them again.
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Feb 14, 2006
I need help from you data warehouse / SSIS experts out there! I have a Transaction Fact Table with dollar amounts as the measurements. The grain is one row per transaction. I want to roll this up into a Monthly Periodic Snapshot based on 5 keys. I am having no problem where there is transaction data for each month.
However, the problem I am having is - how do I gracefully insert the Monthly rows for the five keys where there was no activity in the transaction fact table - I am sure there is a slick way to do this with SSIS but I am definitely having a mental block on how to accomplish this. Any help would be appreciated!
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Apr 9, 2008
Hello,
I have developed some packages to load data into "Fact" tables in the data warehouse.
Some packages are OK, other ones not. What is the problem?: some packages load fact tables with lots of "Lookup - Data Flow Transformation" into the "data flow task" (lookup against dimension tables) but they are very very slow, too much slow to be choosen as a solution.
Do you have any other solutions to avoid using "Lookup - Data Flow Transformation"? Any other solution (SSIS, TSQL and so on....) is welcome to speed up the Fact table loading process.
Thank in advance
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Jun 19, 2015
I am setting up extended events more or less just fine, however I am a bit confused as to how to read and load them into a table for querying. In particular the offset part - is there a way to load just a given dates worth in?
I've got the files configured to be 20MB before rolling over, the XE is running all the time.
So if i load in the full file now, say that covers 2.5 days worth, when I load it again tomorrow to get the updated data I'm also reloading today, which is a waste?
I presume I am going about this wrong, but lack an example that really goes into detail of practicalities of loading this data.
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Nov 18, 2015
I'm currently setting up a Tabular Model to do some research between several fact tables. In this example i have two fact tables (table 1 and table 2) which I've created a 1 to 1 relationship on phone number. Typically I create a relationship between these tables to find common data between the two. However, in this case I am trying to figure out the best way to model the data so that I can easily surface data from one table that does not exist in the other. I would liken this to a LEFT JOIN or a WHERE NOT EXISTS in SQL.
Table 1 has all of the data and Table 2 Only has a subset of the data from Table 1. What I'm trying to do here is display what attributes in Table 1 may play a part in records not existing in Table 2. What is the best way to model this?
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Feb 19, 2007
Hi all,
i have a fact table which loads through package,when
i m trying to load this table by running the package,i m truncating the
fact table and loading the fresh data,instaed of this without
truncating the fact table i have to implement the incremental logic in
this.
For this i can use SCD or Conditional split,but problem
here is i have many source tables to load this fact table,so its
very difficult to trace the changes in different source tables.
can any one help me out in this??????
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Aug 15, 2007
I'm putting together a Kimball method SSIS package. My factSales table has an OrderRep key. If a match isn't found in the dimRep table I am inserting a dummy dimRep row and going on. That seems to be working.
My question is what do I do when the OLTP sales row has NULL for the OrderRep. This is possible; every sale does not have to have an order rep. My package is seeing that as a non match and trying to create a dummy row in the dimRep table for every NULL. I really don't want to do this. I can trap for the NULL rep and convert it to "unknown" or something but then the program would still create a single row in the dimRep table for unknown. Is that the best way to handle this? Or is there a way to trap for NULL and ignore the entire lookup process? A conditional split before every key lookup?
I have about 5 or 6 other dimension tables that will have the same NULL possibility.
Thanks.
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Sep 22, 2006
Hi ,
I have situation where I get data from SRC Flat file and have to load Dimensional table and also fact table, using same data flow(have no other choice since I have to unpivot some src data). Since I have to load both tables in same data flow, I have to have a way to put load ordering constraint (I know informatica allows that). Does any one have any idea on how this can be done in SSIS?
I would be really grateful.
Thanks
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Oct 29, 2015
usual way to check if file exists
DECLARE @File_Exists INT
EXEC Master.dbo.xp_fileexist 'serverBSQL_Backupfile.bak', @File_Exists OUT
print @File_Exists
1
And if check folder, can use "nul", but it doesn't work for UNC path
DECLARE @File_Exists INT
EXEC Master.dbo.xp_fileexist 'serverBSQL_Backupul', @File_Exists OUT
print @File_Exists
0
If use xp_subdirs like:
EXEC master.dbo.xp_subdirs 'serverBSQL_Backups'
If the folder doesn't exists, Msg 22006, Level 16, State 1, Line 3 xp_subdirs could not access 'ServerBSQL_Backups*.*': FindFirstFile() returned error 67, 'The network name cannot be found.'
how to check if UNC folder exists in Backup? in my code I want to check if the unc folder exists before doing backup, the unc path is retrieved from other table or backup history.
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Sep 10, 2015
Due to a SQL 2014 cluster installation failure related to security while setting up the primary node, I had to remove the node and any related installation programs from the node and redo the installation again. However I am unable to use the machine name as the SQL network name during the instance configuration, I get the following:
Microsoft.SqlServer.Chainer.Infrastructure.InputSettingValidationException: The SQL Server failover cluster instance name "MachineName" already exists as a server on the network. Specify a different failover cluster instance name.I am still getting the same name since the node name "MachineName" is listed under the cluster name. I have used machine name as SQL network name without an issue. I do not have any existing SQL machine name in network using same machinename which I want to use for this installation.
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Aug 28, 2014
We are having a conversation at work and the subject of load balancing with SQL came up. Right now we are running SQL Server 2014 on four (4) machines. I am using a AlwaysOn with Availability Groups (AG). Now I know that we can scale out the reading in AG by allowing the secondary serves to receive reads.
Is there a way to be able to do this with writes? Can I have in essences 2 masters that some how reconcile with each other? We are expecting a huge amount of writes in the near future and we need a way for SQL to handle the amount of traffic we are expecting with out any issues.
I explored the possibility of Peer - to - Peer replication; however, it seems that it would be more work if we are constantly making updates to the database scheme.
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Oct 7, 2015
how to load the data from oracle to sql server
oracle source is having 7 tables
sql server target is having 7 tables
i have used VISUAL STUDIO and created the one data for individual but how to run in sql server that ssis package
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Aug 5, 2015
I am trying to load data from Excel 2007 version into SQL server 2014 DB. I am getting below error" SSIS Error Code DTS_E_CANNOTACQUIRE CONNECTION FROM CONNECTIONMANAGER. The AcquireConnection method call to the connection manager "Excel Connection Manager" failed with error code 0xC0202009. There may be error messages posted before this with more information on why the AcquireConnection method call failed".I have tried all options like changing Delay Validation is TRUE and in properties i changed runtime 64 bit to FALSE but still getting above error.
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Sep 20, 2006
Hi,
This is on Sybase but I'm guessing that the same situation would happen on SQL Server. (Please confirm if you know).
I'm looking at these new databases and I'm seeing code similar to this all over the place:
if not exists (select 1 from dbo.t1 where f1 = @p1)
begin
select @errno = @errno | 1
end
There's a unique clustered in dex on t1.f1.
The execution plan shows this for this statement:
FROM TABLE
dbo.t1
EXISTS TABLE : nested iteration.
Table Scan.
Forward scan.
Positioning at start of table.
It's not using my index!!!!!
It seems to be the case with EXISTS statements. Can anybody confirm?
I also hinted to use the index but it still didn't use it.
If the existence check really doesn't use the index, what's a good code alternative to this check?
I did this and it's working great but I wonder if there's a better alternative. I don't really like doing the SET ROWCOUNT 1 and then SET ROWCOUNT 0 thing. SELECT TOP 1 won't work on Sybase, :-(.
SET ROWCOUNT 1
SELECT @cnt = (SELECT 1 FROM dbo.t1 (index ix01)
WHERE f1 = @p1
)
SET ROWCOUNT 0
Appreciate your help.
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Jul 11, 2005
I need to do some processing but only if a specific table 'table1' exists in the SQL Server database. How can I check if this 'table1' exists using either ADO.Net code or SQL Server query?
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May 29, 2006
hi,
I want to know through applicaiton how to check whether the Server named"Myserver" is Exists with Database named "MyDatabase" with Tables named ('Table1','Table2','Table3').
For any Database like (MS Access, Oracle, MS SQL-Server,MySQL)..
Please help me.....
thank's in advance.......
Paresh Patel.
Paresh.onmail@hotmail.com
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Sep 17, 2015
I cannot create a measure that returns results for dates that do not exist in the fact table despite the fact that the components included in the measure contain valid results for these same dates.Creature a measure that counts the number of days where the "stock qty" is below the "avg monthly sales qty for the last 12 months" (rolling measure).Here is the DAX code I have tried for the measure (note that filter explicitly refers to the date table (called Calendar) and not the fact table):
StkOutCnt:=CALCULATE (
COUNTROWS ( VALUES ( Calendar[DateKey] ) ),
FILTER (
Calendar,
[Stock qty] < [Avg Monthly Sales Qty L12M@SKU]
)
)
Below you can see the sub measures (circled in red) are giving results for all days in the calendar.Highlighted in yellow are dates for which the StkOutCnt measure is not returning a result. Having investigated these blank dates, I am pretty confident that they are dates for which there are no transactions in the fact table (weekends, public holidays etc...).why I am getting an "inner join" with my fact table dates despite the fact that this is not requested anywhere in the dax code and that the two sub measures are behaving normally?
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Aug 11, 2015
I am working on a model where I have a sales fact table. Each fact record has four different customer fields (ship- to, sold-to, payer, and bill-to customer). I have one customer dimension table that joins to the sales fact table four times (once for each of the customer fields above). When viewing the data in Excel, I would like to have four hierarchies (ship -to, sold-to, payer, and bill-to customer) within Customer.
Is there a way to build hierarchies within my Customer dimension based on the same Customer table? What I want is to view the data in Excel and see the Customer dimension. Within Customer, I want four hierarchies.
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Jun 6, 2007
Hi.Like in subject. I know the varray and nested tables from oracle, and I'm trying to implement them in sql server. I've been googling for any information but with no result. Can somebody direct me ??Sorry for any english mistakesThanks for help
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Mar 10, 2015
I've the following two tables:
create table #temp1 (name varchar(5), id int)
insert into #temp1 (name, id)
(
select 'a', 5
union
select 'a', 8
[code]....
As a result I would need every name from #temp2, where both searchred id's (5 & 8) from #temp1 are included.In this example i would like to get 'e' as a result, because in #temp2 'e' has the id's 5, 8 and 25.I've tried using cross apply, but cross apply returns every Name that have one of the ids... in this case it would also return 'c'...
Selectdistinct b.name
from(
Selectdistinct name
, id
from#temp1
wherename = 'a'
) as a
cross join(
Selectdistinct name
, id
from#temp2
) as b
wherea.id = b.id
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May 6, 2015
We need to Insert/Update a Fact Table from staging Table. currently we are using a SP which update Fact Table for Each region. this process is schedule, every 5 min job is run and Update fact table.but time of Insert and Update too long from staging to Fact, currently we are using merge statement for Insert and update.in my sp we are looping number how many region we need to update and at a time single Region we are updating using while loop in current SP.
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May 19, 2015
SELECT from openrowset(BULK 'SERVERNAMEsomepathsomefile.csv'... fails while SELECT from openrowset(BULK 'c:somepathsomefile.csv' ... works.
I am running the task as a specific sql server user. If I run the same query in management studio using execute as login='batchuser', it also works for any path.
How can I make this work without an extra step moving the data to the local server? Because that would cause extra administration.
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Jun 10, 2015
Here is my table:
My question is: How can I insert a row for each unique TemplateId. So let's say I have templateIds like, 2,5,6,7... For each unique templateId, how can I insert one more row?
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May 21, 2008
I only see a need for a PK in a dimension table, not a fact table. Do you agree?
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May 28, 2008
I would like to know how to use a fact table so that when I insert or update a row with a word that the table will reference the fact table to make sure that the word I'm using is correct.
for example I have a table with column Fulltext and Abbreviation
in the fulltext column I have a a word "Windows Server 2008" now in the abbreviation I would like to abbreviate this to "Win Srv 08" Now the Fact table would have to columns Fulltext and Abbreviation under Full text the full words would be in it like Windows, Server, and 2008 and under the Abbreviation column Win, srv, and 08
So I want it so that everytime the word Windows comes up and I need to type an Abbreviation for it that it will reference the fact table which is using the Abbreviation Win. To avoid different ways of abbreviating the word windows.
Is there a way to do this automatically so that I don't have to manually go back and forth between the fact table and the table that I'm updating?
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Dec 23, 2013
We have two tables with names X and Y.
X has a,b columns. And Y has c,d columns.
I want to update b column in X table with the values from d column in Y table on condition X.a=Y.c.
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Jul 29, 2014
table1
id value
1 11
2 12
3 13
4 14
table2
id1 value1
1 21
2 22
1 31
2 32
in need output as follows
id value id1 value1
1 11 1 21
2 12 2 22
3 13 null null
4 14 null null
1 11 1 31
2 12 2 32
3 13 null null
4 14 null null
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May 27, 2004
Hi,
we have a problem with "one-to-many relations between fact table and dimension table". Take the example of table "LOGGEDFLAW" which is related one-to-many to the table "LOGGEDREASON. "LOGGEDFLAW" includes the column "FLAWKEY" and "LOGGEDREASON" includes the column "REASONKEY" and essentiallay the column "FLAWKEY" as foreign key. Now assume that we have the following records in there:
LOGGEDFLAW
1) FLAW1
2) FLAW2
LOGGEDREASON
1) REASON1,FLAW1
2) REASON2,FLAW1
3) REASON3,FLAW2
Now assume, that "LOGGEDFLAW" is the facttable and "FLAWCOUNT" is the measure with the source column "FLAWKEY" in which we want to count the number of FLAWs. As you see in the example the number of FLAWs is 1 for "FLAW1" and "FLAW2". Microsoft Analysis Server generates the value of 2 for the number of FLAWs "FLAW1" because of the one-to-many relationship to the table "LOGGEDREASON". In the attached ZIP File you find :
- a MDB File with the described example
- a screenshot from the cube constructed in AS
- a screenshot from the result table generated with AS.
The question: How is it possible to calculate the measure "FLAWCOUNT" correctly, ignoring the records generated by the one-to-many relationship?
Best regards,
Thorsten
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Mar 16, 2007
I have picked an exmple from this forum, to help me explain my current problem...
"I'm looking for a solution to import data from a flat file into an normalized data modell. To explain it a little simpler think about to following:
The Data Souce is a CSV-File with FirstName, LastName and Category. Sample data could be
Dirk; Bauer; sailing
Peter; Bauer; fishing
Marc; Bauer; reading
In my data modell I have defined the 2 tables "Person" and "Category":
Table "Person"
----------------
[PersonID] [int] IDENTITY(1,1) NOT NULL
[CategoryID] [int] NOT NULL
[FirstName] [nvarchar](50)
[LastName] [nvarchar](50)
Table "Category"
----------------
[CategoryID] [int] IDENTITY(1,1) NOT NULL
[CategoryName] [nvarchar](50)
Now I like to read my first row from the source and lookup a value for the CategoryID "sailing". As my data tables are empty right now, the lookup is not able to read a value for "sailing". Now I like to insert a new row in the table "Category" for the value "sailing" and receive the new "CategoryID" to insert my values in the table "Person" INCLUDING the new "CategoryID".
I think this is a normal way of reading data from a source and performing some lookups. In my "real world" scenario I have to lookup about 20 foreign keys before I'm able to insert the row read from the flat file source.
I really can't belief that this is a "special" case and I also can't belief that there is no easy and simple way to solve this with SSIS. Ok, the solution from Thomas is working but it is a very complex solution for this small problem. So, any help would be appreciated...
Thanks,
Dirk"
http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=74752&SiteID=1
Could someone help me creating the dimension table?
Thanks!!
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