Why Skipping Identity Numbers
Sep 4, 2004
Hi All
I am using SQL 2000 on win 2003 server and I have been using the query analyzer and a stored procedure to add records to a particular table.
For some reason the ID column which is an identity column and is seeded to increment by 1, skips numbers every once in a while. I haven't used any deletes and there have been no errors when loading the info.
Has this happened to anyone else? Where do I start looking for possible causes
Thanks
P
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Jun 2, 2015
I have inherited a system which uses Identity numbers for primary key fields, but also displays them for the user to see. The user has noticed missing numbers in the sequence, sometimes just a few numbers and sometimes as many as 1000 numbers missing.
As far as I can tell the few numbers missing could possibly be explained by users deleting records or the number being generated on a save, but the save then failing. But I can't explain the huge jump of 1000.
I can find no reference to the RESEED in the code...
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Mar 4, 2008
Hello,
I have an ID column which is an Identity column, and it counts from 1 upwards.
If I have 10 records, I have ID's number 1 to 10.
If I then add another record, it will give the ID number 11.
Imagine I then delete ID number 9
Is it possible to get the next record I create to take number 9 instead of 12 ?
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Sep 26, 2007
Is there a way to check for missing identity numbers in a Primary Key column? I have some databases that are not fully normalized and want to check on tables that might have had some records deleted. Thank you.
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Aug 19, 1999
After moving our database between servers, one table had a hiccup in it's
identity column. The number jumped from 761 to 1886863475 on the next
insert. This is a production server and I didn't catch it until yesterday.
So I have several days worth of numbers in a central table. I can't clean
them out, but I wondered if I could do the following:
DBCC CHECKIDENT ('table_name', RESEED, 800)
I tested it on our development server and it doesn't seem to cause any
problems. I know that when we get to 1.8 billion on the identity column
again we'll get an error, but I'm willing to risk it.
A few questions. 1) Am I insane for trying this? 2) Has anyone else ran into
a similar problem and what did you do to fix it? 3) If I do this, is there
anything in particular to watch out for? 4) What caused the jump in the
first place?
My other option is to change the datatype from int to decimal(19) or
something along those lines. This will upset our programmers and I'll have
to change all my foreign keys (not a big deal, just a pain).
Any input at all here would be appreciated.
Thanks,
Grant
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Aug 24, 2006
I guess this is a fairly common topic but couldn't find the right words to find anything in a search.
What I'm getting at, is there any tsql functions or combination of commands for the following.
You have identity columns in your tables, if you set the a seed and autoincrement, I enter in rows 1 -10 and then I delete 4, 6, 7, 8.
My next new record uses 11. Is there any logic that allows you to check and reuse 4, 6, 7 & 8 described above? Not looking for something that consists of having to create an extra ID table for each table and handle configuring what the next available number is everytime an Insert or delete is called.
Thanks.
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Feb 1, 2007
I have a report with a column which contains either a string such as "N/A" or a number such as 12. A user exports the report to Excel. In Excel the numbers are formatted as text.
I already tried to set the value as CDbl which returns error for the cells containing a string.
The requirement is to export the column to Excel with the numbers formatted as numbers and the strings such as "N/A' in the same column as string.
Any suggestions?
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Jul 20, 2005
Why does M$ Query Analyzer display all numbers as positive, no matterwhether they are truly positive or negative ?I am having to cast each column to varchar to find out if there areany negative numbers being hidden from me :(I tried checking Tools/Options/Connections/Use Regional Settings bothon and off, stopping and restarting M$ Query Analyer in betwixt, butno improvement.Am I missing some other option somewhere ?
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Apr 17, 2007
Iam extracting data from Excel to SQL Destination. In my excel file there are some null values rows are there, just want to skip those null and rest have to export to SQL server Destination. Anyonce can helpme in this.
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Mar 11, 2008
I have a table with a column ID of ContentID. The ID in that column is all NULLs. I need a way to change those nulls to a number. It does not matter what type of number it is as long as they are different. Can someone point me somewhere with a piece of T-SQL that I could use to do that. There are over 24000 rows so cursor change will not be very efficient.
Thanks for any help
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Jan 20, 2007
I am using the following code to query a DB and output an Excel Spreadsheet. For some reason, the first line is always missing.Any help would be greatly appreciated.============================================1 reader = cmd.ExecuteReader()
2 If Not reader.Read() Then
3 Return False
4 Else
5 For i = 0 To reader.FieldCount - 1
6 strLine += reader.GetName(i).ToString & Chr(9)
7 Next
8 objStreamWriter.WriteLine(strLine)
9 strLine = ""
10 With reader
11 While .Read
12 For x = 0 To .FieldCount - 1
13 strLine = strLine & reader.GetValue(x) & Chr(9)
14 Next
15 objStreamWriter.WriteLine(strLine)
16 strLine = ""
17 End While
18 End With
19 End If
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May 18, 2015
I have a table with a text field and a grouping number.
1, A
1, B
1, C
1, D
1, E
2, A
2, C
2, D
2, E
3, A
3, B
3, C
3, F
4, A
4, B
4, D
4, F
4, G
I assemble the text fields into strings by group, using the FOR XML PATH('') function, so that I end up with
1, A-B-C-D-E
2, A-C-D-E
3, A-B-C-F
4, A-B-D-F-G
This all works fine. I now have a requirement to leave out some groups, based on whether the GROUP does or does not contain a certain text. For instance, if I want only GROUPS with 'E', my result set should be
1, A-B-C-D-E
2, A-C-D-E
If I want only those GROUPS that DO NOT have 'E', my result set should be
3, A-B-C-F
4, A-B-D-F-G
I can (and have) put a condition on the assembled string, but it seems to me that it should be possible to make the cut earlier. That is, rather than assembling the string, scanning it with a Like '%E%' condition and discarding what doesn't meet my needs, I would like to stop scanning the incoming GROUP as soon as a mismatch is detected.
If I want all groups that will not contain an 'A', for instance, it is pointless for the query engine to read in 'A', 'B', 'C', 'D', 'E', put them all together into a string, compare it with a wildcard and throw it away. As soon as it sees the 'A', it has enough information to completely skip over the rest of that group. The abbreviated examples here are trivial, but the real code is not.
All I've been able to dream up so far results in skipping the RECORD that contains the 'A', but not the entire group.
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Jun 19, 2006
How do you skip just one record in transactional replication when you have an error?
I know we can add the -skiperror flag to the distribution agent to skip all errors (for a particular error number). But if we do that, can we get detailed information on every record that was skipped?
My goal is to be able to identify every row that cannot be replicated and has to be skipped.
Thanks!
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Aug 30, 2007
Hi All,
While we are loading the text file to SQL Server via SSIS, we have the provision to skip any number of leading rows from the source and load the data to SQL server. Is there any provision to do the same for Excel file.
The source Excel file for me has some description in the leading 5 rows, I want to skip it and start the data load from the row 6. Please provide your thoughts on this.
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May 14, 2002
I have coded an alter statement for adding a column to a temp table inside an sp,but it skips the alter statement while executing the sp! This happens even if I run the same code on query analyzer too. If I use 'GO' statement before the alter command,then it works fine on Query Analyzer.But, I can't use 'GO' in an sp. I am using the sa account. Any ideas on how to fix this??
Thanks.
Di.
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Aug 27, 2012
skip locked records in a MERGE statement and output the list of skipped records.
Through the documentation, internet posts and testing, I believe it is NOT possible. MERGE acts like a single atomic DML statement, and therefore cannot avoid locked records.
I can use the READPAST hint, which will skip the row-locked records. However, it could actually insert duplicate keys in certain cases (as it is ignoring records, i would guess), which would not be acceptable.
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Jun 14, 2007
I'm trying to create a transaction replication from SQL Server 2000 to 2005. Basic replication between the servers works just fine. However, what I want to accomplish is to be able to skip some of the transactions. Example - from time to time we want to purge some of the historical data from the main database (the publisher). We don't want the same purging to occur on the destination database, which will be used for reporting purposes and needs to include all the historical information. I wanted to simply stop the replication log reader, purge the records, backup the transaction log with truncation and then restart the reader. The only problem - the truncation on the replicated database keeps the transactions of the purging until they are replicated, so the transaction log backup doesn't help. Any ideas would be greatly appreciated!
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Dec 18, 2007
Hello,
Using ADO to conect to a text format data file to gather data.
File is a .dat file, tab delimited, no header row.
Got all my ducks in a row:
1) Write a schema.ini
2) Make sure the extension is not excluded in the Jet Text registry key
3) Setup the connection properly (per MSDN Scripting help)
Works nicely, except the fist line of data is missing. File contains 78 rows of data, Jet is skipping the first line every time and reporting 77 rows.
Notes:
1) Adding a blank row, as suggested in this forum, is not an option - the data files are machine generated are not to be altered by other processes.
2) I could do it the old fashion way of importing and splitting into arrays, but this is a database function and ADO should be able to handle it.
Code samples:
Code Block
adoCON.Open "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & sPath & ";Extended Properties=""text;HDR=NO;FMT=Delimited;"";"
On Error Resume Next
rsSrc.Open "Select * From " & sFile, adoCON, adOpenStatic, adLockOptimistic, adCmdText
sPath is a string containing the path, including the trailing
sFile is a string containing the file name.
Any ideas?
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Jan 25, 2007
The data file contains column names in the first row. Excel imports the file correctly. I can see the tabs in UltraEdit32. But...the flat file connection just skips over a column.
In the preview window, it appears to skip the column entirely.
However, when the data is imported, data from the non recognized column goes into a column that is mapped to receive data from another column shifting the data in to the next column.
I am using the CopyColumn and the SQL Destination controls.
Any ideas on how to make this work?
Thanks,
IanO
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Mar 5, 2008
Hello,
I have to import flat files with headers and footers. I found how not to import headers but still have issues with footers. Is there a quick way to do that?
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Dec 14, 1999
Hello,
Just in case anybody has had this problem after applying service pack 5a.
a stored procedure that sets serial numbers on records on a temporary table is skipping every other record.
I ran the code manually on isql and could not replicate the error, however when re-compiled on stored procedure it fails misserably.
when is Microsoft going to release a service pack that actually works?
Did you know that Executive does not recognize 2000 as a leap year?
If anybody has any suggestions on this problem, besides the obvious (using a real table) please write back
thanks.
David E. Pierri
Pseudo data-admin
ACNY
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Aug 22, 2013
I'm having a problem with a flat file source in that the package throws an error straight away. The error I get is as follows:
Information: 0x4004300C at Data Flow Task, SSIS.Pipeline: Execute phase is beginning.
Error: 0xC0202091 at Data Flow Task, Flat File Source [2]: An error occurred while skipping data rows.
Error: 0xC0047038 at Data Flow Task, SSIS.Pipeline: SSIS Error Code DTS_E_PRIMEOUTPUTFAILED.
The PrimeOutput method on Flat File Source returned error code 0xC0202091. The component returned a failure code when the pipeline engine called PrimeOutput(). The meaning of the failure code is defined by the component, but the error is fatal and the pipeline stopped executing. There may be error messages posted before this with more information about the failure.
I've tried multiple things to resolve this.. Changing the OutputColumnWidth in the flat file connection manager, checking the file for any irregularites in notepad++ (each line ends as it should with CRLF), the file is encoded in UTF-8 without BOM .
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Apr 28, 2015
I have a file with a header row which contains the date of the file and under that all the columns without a header.
In SSIS package I skip row and manually name the different columns.
However, I want to use the column in the header row to store the date value in an SSIS variable and use that variable to write it to our staging table. How can I do this when I skip the header row?
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Feb 21, 2007
I have an 'ID' column. I'm up to about ID number 40000, but not all are in use, so ID 4354 might not be in any row. I want a list of all numbers which aren't in use. I want to write something like this:
select [numbers from 0 to 40000] where <number> not in (select distinct id from mytable)
but don't know how. Any clues?
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Mar 27, 2007
I'm trying to write data to excel from an ssis component to a excel destination.
Even thought I'm writing numerics, every cell gets this error with a green tag:
Convert numbers stored as text to numbers
Excel Cells were all pre-formated to accounting 2 decimal, and if i manually type the exact data Im sending it formats just fine.
I'm hearing this a common problem -
On another project I was able to find a workaround for the web based version of excel, by writing this to the top of the file:
<style>.text { mso-number-format:@; } </style>
is there anything I can pre-set in excel (cells are already formated) or write to my file so that numerics are seen as numerics and not text.
Maybe some setting in my write drivers - using sql servers excel destination.
So close.. Thanks for any help or information.
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Jul 9, 2006
While I have learned a lot from this thread I am still basically confused about the issues involved.
.I wanted to INSERT a record in a parent table, get the Identity back and use it in a child table. Seems simple.
To my knowledge, mine would be the only process running that would update these tables. I was told that there is no guarantee, because the OLEDB provider could write the second destination row before the first, that the proper parent-child relationship would be generated as expected. It was recommended that I create my own variable in memory to hold the Identity value and use that in my SSIS package.
1. A simple example SSIS .dts example illustrating the approach of using a variable for identity would be helpful.
2. Suppose I actually had two processes updating these tables, running at the same time. Then it seems the "variable" method will also have its problems. Is there a final solution other than locking the tables involved prior to updating them or doing something crazy like using a GUID for the primary key!
3. We have done the type of parent-child inserts I originally described from t-sql for years without any apparent problems. (Maybe we were just lucky.) Is the entire issue simply a t-sql one or does SSIS add a layer of complexity beyond t-sql that needs to be addressed?
TIA,
Barkingdog
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Jun 30, 2006
I want to insert a new record into a table with an Identity field and return the new Identify field value back to the data stream (for later insertion as a foreign key in another table).
What is the most direct way to do this in SSIS?
TIA,
barkingdog
P.S. Or should I pass the identity value back in a variable and not make it part of the data stream?
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Jan 25, 2015
I have table of three column first column is an ID column. However at creation of the table i have not set this column to auto increment. Then i have copied 50 rows in another table to this table then set the ID column values to zero.
Now I have changed the ID column to auto increment seed=1 increment=1 but the problem is i couldn't figure out how to update this ID column with zero value set to each row with this auto increment values so the ID column would have values from 1-50. Is there a away to do this?
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Sep 19, 2005
Ok,I just need to know how to get the last record inserted by the highestIDENTITY number. Even if the computer was rebooted and it was twoweeks ago. (Does not have to do with the session).Any help is appreciated.Thanks,Trint
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Jun 19, 2008
Hi,
I am having problem in bulk update of a sql server table haning identity column from a datatable( has no identity column) using sqlbulkcopy. I tried several approaches, but it does not show any error nor is the table getting updated. But the identity value seems to getting increased every time.
thanks.
varun
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Aug 1, 2014
I'm working with a third-party database (SQL Server 2005) and the problem here is the following:
- There are a bunch of ETL processes that needs to insert rows on a table (let's call this table T) and at the same time, an ERP (owner of T) is up and running (reading, updating and inserting on T).
- The PK of T is an Integer.
Today all ETL processes uses (select max(ID) + 1 from T) to insert new rows, so just picture the scenario. It is a mess! Everyday they get duplicate key error when 2 or more concurrent processes are trying to insert a row (with the max) at the same time.
Considering that I can't change the PK, what is the best approach to solve this problem?
To sum up:
* I need to have processes in parallel inserting on T
* I can't change anything on T
* The PK is NOT an Identity
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Jun 25, 2015
I have a requirement to only rebuild the Clustered Indexes in the table ignoring the non clustered indexes as those are taken care of by the Clustered indexes.
In order to do that, I have taken the records based on the fragmentation %.
But unable to come up with a logic to only consider rebuilding the clustered indexes in the table.
create table #fragmentation
(
FragIndexId BigInt Identity(1,1),
--IDENTITY(int, 1, 1) AS FragIndexId,
DBNAME nvarchar(4000),
TableName nvarchar(4000),
[Code] ....
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Aug 12, 2009
when i alter non identity column to identity column using this Query alter table testid alter column test int identity(1,1) then i got this error message Msg 156, Level 15, State 1, Line 3 Incorrect syntax near the keyword 'identity'.
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