Unique Transaction Number
Oct 13, 2004
As part of the credit card process I have to supply a unique transaction id.
I thought the best way to do this would be to have a file which just holds a number which I grab and increment each time some one registers. Then if everyting is alright I will write the user's details a long with the transaction id to the User file.
My question is, if two people try to register and both try to grab the next number from the file at the same time, what will happen. Will one get a record lock message, or will it wait untill the other one has finished, or could two people end up with the same number under these circumstances?
I am of course open to suggestions on the best way of approaching this, but please bare in mind that I am only using Web Matrix.
Thanks
Mark
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Jan 10, 2006
Hi
I remember that once I had a problem when using a cursor in a sp and when several instances of the sp were running I had a problem when the first sp in the sequence deallocated the cursor and all the other who run in parallel had errors...
Well, this is not the problem now, but my question is, if I have a sp that has begin tran t1, and several instances of the sp are running in parallel, and each of course has begin tran t1, should I expect the same collision effect like with the cursor? Is every tran has to be with unique name? Or maybe the server knows how to manage this and when one tran has started and another sp tried to start another with the same name it makes it wait until the first one committed or rolled back?
Thanks,
Inon.
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Nov 21, 2001
Hi,
I am new to sql server, in oracle one can get a unique number as:
create sequence my_number
increment by 1 start with 1;
select my_number.nextval from dual;
Is there any similiar mechanism in sql server? if so, how to do it?
THanks in advance,
bb
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Jul 23, 2005
Hallo,Hot to get unique, sequential number during executionof stored procedure ?I can create table with autoincrement column,add record, get ident_current and delete recordeach time i need the number.However its not elegant i guess.best regardspluton
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Jan 23, 2008
Hi to alll of you, i'm working in a project to save cars information, when the user who adds on the new record enter all the data, this will need to be printed with a particulary number, which needs to be unique, (lets take a passport number as an example) this generated number will takes some info from the filling fields, for example:
Cars Brand: BMW (catalog number: 120)
Cars Model: 325 (catalog number: 30)
Year: 2008 (catalog number: 18)
So the unique certification number will takes from the catalog numbers * 20 / 5 for example for cars Brand
for Cars Modelo: catalog number *3 + 15
CERTIFICATE NUMBER: 480-105
I'm not sure if this is possible.
I will realy thanks for your help in this issue.
Best Regards
Gian
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Jul 19, 2000
Is there wa way to generate unique sequence numbers in SQL server?
(just like the way it is in Oracle i.e. seqeuence and then use nextval)
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May 23, 2008
Hello,
I am using SQL Server 2005 and am having trouble with making a history table like mentioned in my earlier thread:
http://www.sqlteam.com/forums/topic.asp?TOPIC_ID=102811
This is the table "People" I have created:
|PersonId (PK)|DateFrom (PK)|DateTo|PersonName|Other Attributes....
Each change to a person's attributes results in a new row formed with the same PersonId as in the row with old attributes and the Date these new attributes are valid (DateFrom). So as shown above the Primary Key is a combination of the PersonId and DateFrom as a change to a person's attributes should never happen at the same time twice.
My problem is when I want to create a new person, how do I get a new unique id? Ideally I want the a new incremented id, so that all peoples' ids are in a sequential order.
As always, thanks for the help!
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Dec 11, 2007
I need to generate a random 10 digit alphanumeric string that is also unique within a table. My application will be calling a stored procedure to insert this number into the table. This number will be associated with a id from another table. Is it better to generate the random number within sql (and perform the lookup at the same time), then just pass the number back to the calling application ?
If the calling application generates the number, it will also need to make a call to check if its unique. So im thinking it would be best to simply have sql generate this random number, check the number against the table and then insert the new record.
thoughts ?
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Dec 1, 2015
Lets say we have a table (tblProducts)
ID Item RandomNumber
-------------------------------------------
1 JEANS 1234567
2 SHIRT 72813550
3 HOOD Null
4 TROUSER 72191839
5 BLAZER 0
I want to perform a query so that SQL should look for RandomNumber Values and set a Unique Random Number Where RandomNumber Value is Null or 0.So I have got a solution as one of the MSDN Member shared the below query
select id,item,RandomNumber=Case when RandomNumber=0 then (select floor(rand()*100000000-1))
when RandomNumber is null then (select floor(rand()*100000000-1))
else RandomNumber end from tblProducts
So, can you all confirm me, that performing this query ensures that if a Value is assigned to one of the Item in RandomNumber Column, that value will not be assignend to any other Item in RandoNumberColumn.
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Nov 1, 2007
My team at work has spent the past week troubleshooting performance issues experienced by users of our asp.net 2.x web application. We've got a probe running on one of the web servers that has identified a frequently occuring error that no one has seen before and I can't find anywhere online. MSSQL error "system.data.oledb.oledbcommand.executenonquery(Maximum number of unique SQL exceeded) Has anyone here ever seen this error before?The web server, application, SQL servers and databases all seem to be configured properly, but users are experiencing latency and this frequently occurring error is a mystery to us.
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Oct 14, 2004
What I need to do is re-populate a unique number into multiple fields,
Let me explain, An employee can appear in the first table only once but can be in the second table multiple times with multiple employee numbers .There is a field called TFN that is unique and we are using it to create a unique id called KRid so what I have done is created 2 tables namely TEST_TBL and TEST2_TBL . In TEST_TBL I am populating a KRid with a unique no being produced by the TFN field only once i.e 12345 being the resulting unique id number. If an employee has 2 employee numbers i.e empno 1 and empno 1000,only employee no 1 will have the unique KRid created but nothing for 1000 because the record already exists , so what has me stumped is that the TFN for employee empno 1 and the TFN for empno 1000 are the same. How do I get the KRid (12345 from empno 1) to populate empno 1000 in TEST2_TBL , The second table has all records in so I can group the second table by TFN id but how do I populate employee 1000 in the second table with the KRid 12345.
Please help!!!!! Below are how the tables are set up and an example of the result.
TABLE 1
if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[TEST_TBL]') and OBJECTPROPERTY(id, N'IsUserTable') = 1)
drop table [dbo].[TEST_TBL]
GO
CREATE TABLE [dbo].[TEST_TBL] (
[Empl_Num] [char] (32) COLLATE SQL_Latin1_General_CP1_CI_AS NULL ,
[Surname] [char] (32) COLLATE SQL_Latin1_General_CP1_CI_AS NULL ,
[First_Name] [char] (32) COLLATE SQL_Latin1_General_CP1_CI_AS NULL ,
[Mid_Name] [char] (32) COLLATE SQL_Latin1_General_CP1_CI_AS NULL ,
[Hours_Day] [numeric](18, 2) NULL ,
[Hours_Wk] [numeric](18, 2) NULL ,
[KR_ID] [bigint] IDENTITY (1, 1) NOT NULL ,
[TFN] [char] (32) COLLATE Latin1_General_CI_AS NULL ,
[Date_Term] [datetime] NULL ,
[Empl_Type] [int] NULL ,
[Cost_Centre] [char] (32) COLLATE SQL_Latin1_General_CP1_CI_AS NULL ,
[Empl_Status] [int] NULL
) ON [PRIMARY]
GO
TABLE 2
if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[TEST2_TBL]') and OBJECTPROPERTY(id, N'IsUserTable') = 1)
drop table [dbo].[TEST2_TBL]
GO
CREATE TABLE [dbo].[TEST2_TBL] (
[EmpNumber] [char] (32) COLLATE Latin1_General_CI_AS NULL ,
[TFN] [char] (32) COLLATE Latin1_General_CI_AS NULL ,
[KR_ID] [char] (10) COLLATE Latin1_General_CI_AS NULL ,
[EmpStatus] [int] NULL ,
[EmpType] [int] NULL ,
[CommonName] [char] (32) COLLATE Latin1_General_CI_AS NULL
) ON [PRIMARY]
GO
Query goes as follows for table 1:
SELECT NPE000.EmpNumber, NPET00.RecordStatus, NPE000.KR_ID, NPE000.Surname, NPE000.FirstName, NPE000.SecondName, NPE000.Class, NPE000.DateEmployed, NPE000.DateOfBirth, NPE000.HoursPerDay, NPE000.HoursPerWeek, NPE000.PassportNo, NPE000.AwardCode, NPE000.EmailPayslipTo, NPE000.Location, NPE000.Grade, NPE000.DateTerminated, NPE000.EmploymentType, NPE000.DistCode, NPE000.EmpStatus, NPET00.TaxRefNo FROM NPE000 NPE000, NPET00 NPET00 WHERE NPET00.RecordStatus = 0 and NPET00.TaxRefNo <> ' 111111111' and NPET00.TaxRefNo <> ' 000000000' AND LENGTH(NPET00.TaxRefNo) >= 9 AND LENGTH(NPE000.KR_ID) >= 0 AND NPE000.EmpNumber = NPET00.EmpNumber
Query goes as follows for table 2:
SELECT NPE000.EmpNumber, NPE000.FirstName, NPE000.Surname, NPE000.Class, NPE000.Location, NPE000.EmploymentType, NPE000.EmpStatus, NPET00.TaxRefNo, NPE000.Paypoint, NPE000.KR_ID, FROM NPE000, NPET00 WHERE Recordstatus = 0 and (EmploymentType = 1 AND EmpStatus = 1 AND NPE000.EmpNumber = NPET00.EmpNumber
From this you can see that in table 1 it will only create 1 KR_ID for only one employee number but in table 2 I am bringing through all employee records. In table 2 I can group by NPET00.TaxRefNo which will bring all NPET00.TaxRefNo's togeather. From that I would like to populate the other employee numbers with the unique KR_ID.
Example:Table 1
000001,Jackson,James,Sam,7.6,38,12345,475431212
Example:Table 2
000001,Jackson,James,Sam,7.6,38,12345,475431212
001000,Jackson,James,Sam,7.6,38,,475431212
I hope this helps
Thanks in advance
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Aug 22, 2007
Hi
I have a sql procedure. I need to create UNIQUE random 13 digit number to use for barcode.
How do I generate 13 digit UNIQUE random in sql procedure?
Advance thanks
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Nov 15, 2015
Lets say I have a table - tblProducts
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Aug 27, 2007
can someone pls show me a way to get an unique sequence at below senario:
PC1 & PC2 using their own local client progam to access to Database Server at SERVER1.
In the SERVER1, there is a table SEQUENCE in a database DATABASE1.
And the table's structure of SEQUENCE are SeqType & SeqNo.
Here is the sample data:
SeqType SeqNo
Invoice 100
DeliveryOrder 200
Now, how to prevent PC1 & PC2 to get a same Invoice No. if they request the Invoice No. at the same time?
Is it possible to lock the record Invoice when i perform a SELECT statement, then i update the Invoice to 101, lastly release the lock for Invoice?
pls advise. thanks.
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May 19, 2015
How to Generate the Unique 8 Digit Number in SQL SERVER.And also am trying with below methods which is not working as expected.
Methode-1:
SELECT CONVERT(VARCHAR(5),GETDATE(),112) +CONVERT(VARCHAR,DATEPART(MS,GETDATE())) AS '8DigitUniqNum'
Methode-2:
DECLARE @UniqueID uniqueidentifier
SET @UniqueID = NEWID()
SELECT LEFT(@UniqueID,8) AS '8DigitUniqNum'
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Sep 23, 2006
I have a situation where for a given customer, their invoices need to be sequentially numbered, without gaps.
Customer A Invoice 1,2,3,4 ...
A-1
A-2
A-3
A-4
Customer B:
B-1
B-2
etc.
The issue is 2 people creating an invoice for the same customer at the same time. Currently I don't assign the Invoice number until the user hits 'Save'. At that time I query for max(invoiceno) against the customer key and simply add 1. it's the last operation prior to saving against the backend.
If 2 users hit Save at the exact time, I'm getting the same (duplicated) Invoice Number.
What suggestions/techniques do you have to resolve this? Would "locking" of the customer record and storing the last highest invoice there play a part?
Thanks,
Peter
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Aug 6, 2014
I'm trying to do the following and haven't been able to figure it out.
Say there's a table with these records:
Col1 Col2 Col3
a b c
a b c
a b d
e f g
e f g
I want to generate a number that represents the groups of columns like this:
Col1 Col2 Col3 MyNumber
a b c 1
a b c 1
a b d 2
e f g 3
e f g 3
So that each grouping gets its own identifier. I've tried this:
SELECT Col1, Col2, Col3
row_number() OVER (PARTITION BY Col1, Col2, Col3
ORDER BY Col1, Col2, Col3) AS MyNumber
FROM MyTable
But I get this:
Col1 Col2 Col3 MyNumber
a b c 1
a b c 2
a b d 1
e f g 1
e f g 2
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Aug 17, 2007
Does anybody know how to generate a new identity value from within SSIS. Can anybody point me to a good example using a script component?
Thanks you very much!!!!
Sergio
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Nov 25, 2013
create table #temp_Alpha_num (
[uniquenum] [int] Not NULL,
[Somenum] [int] Not NULL,
)
Insert into #temp_Alpha_num(uniquenum,Somenum)
values
(1,121)
[Code] ....
For the somenum column I need to add alphabets to make them unique. for example
121a,121b,121c....121z,121aa,121ab,101a and so on...
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Apr 30, 2015
Below is my sample data. I can't figure out how to select Unique phonenumber contacts for the same Ranked values from the set.
Basically the table is a mix of contactIDs. Some of them have duplicate phone numbers and through a separate mechanism we have ranked them.
It's easier then to pull out max(ranked) CLI_Numbers and their counterpart contactID(s). But I am also getting 2 or more records where the rank happens to be the same. I don't want that. Any one of the contactID will do for me.
The table has also same cliNumbers with different rank values, which are then correctly being picked up in the query below.
Note: ContactId is a unique value for each person in the table.
RecordID is simply RowID.
( I have attempted to populate a sample data suited for this forum - not sure how it comes out on the browser)
if object_id('tempdb..#MyData') is not null
drop table #MyData
create table #MyData
(
RecordID int,
contactID int,
forename varchar(25),
surname varchar(25),
[Code] ....
This is my query attempt
With RankedmobileDuplicateSet
as(
select cliNumber, max(ranked_value) as ranked_max_value
from #temp_UK_mobiledata
group by cliNumber)
[Code] .....
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Jan 16, 1999
I have a problem with a 3rd party piece of software. Doesn't matter which, really. The problem lies
in a table called payments, with a column called txnumber...the newest version of this software fails
a check during installation with the message "duplicate txnumber in payment table." Not sure how
this could have happened, since there is no way to manually assign the txnumber, but the point is
not important. What I'd like to do is figure out a sql script that will return only the duplicate number(s)
so that I can either remove or change them manually. Unfortunately, I'm not terribly familiar with sql.
Any suggestions?
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Aug 21, 2006
Good day to all
SQL Server 2000.
I have a problem with a piece of code, which updates some tables using transaction. This process brings the program to a halt when updating large files.
With smaller files, the process finishes without problems.
I have noticed that, if a comment out the "begin transaction" and respective "commit", the same code executes without problems, even when updating large files.
I suspect that there is a limit on the number of records a transaction can hold before a commit is issued. I am surprised however, that SQL Server halts, without messages or warnings.
Is this a configuration issue? If there is a limit on the number of records a transaction can hold, what is this limit:? Anything I can do to have a warning form SQL Server when a situation like this is reached (or indeed to avoid this situation) ?
Thank you in advance for any help
Cecil Ricardo
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Jul 22, 2015
I have a transaction number in my mapping table. I have a matching transaction number in my PDHist table. Sometimes I have matching transaction numbers in my PD table, but not always. This is causing no records to be returned. I have a One to Many relationship between my mapping table and both PD and PDHist.
Also, I need to check for nulls in my foreign exchange table.I can’t post the SQL because this is a classified project. However, it should be something like this, I think.
IIf(IsNull([Redem]![FX Rate]),([PDHist]![Remaining Balance]+[PD]![Closing Balance(TC)]).
The addition isn’t working. I think with a small push I can get this straightened out.
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Jul 27, 2007
I have a table in which a non-primary key column has a unique index on it.
If I am inserting a record into this table with a duplicate column value for the indexed column, then what will be the error number of the error in above scenario? OR How could I find this out?
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Apr 28, 2008
need help
how to archiv table to another table with unique number for all rows once + date time (not the second only day time +minute)
i need whan i insert to the another table add 2 more fields (unique number , date_time )
this is the table 1 i select from
ID fname new_date val_holiday
----------------------------------------------------
111 aaaa 15/03/2008 1
111 aaaa 16/03/2008 1
111 aaaa 18/03/2008 1
111 aaaa 19/03/2008 1
111 aaaa 20/03/2008 1
111 aaaa 21/03/2008 1
222 bbb 02/05/2008 3
222 bbb 03/05/2008 3
222 bbb 04/05/2008 3
222 bbb 05/05/2008 3
222 bbb 06/05/2008 3
222 bbb 07/05/2008 3
222 bbb 08/05/2008 3
222 bbb 09/05/2008 3
333 ccc 03/04/2008 4
333 ccc 04/04/2008 4
this is the table 2 i insert into
----------------------------------
ID fname new_date val_holiday unique number date_time
--------------------------------------------------------------------------------------------------------------------
111 aaaa 15/03/2008 1 666 15/04/2008 17:03
111 aaaa 16/03/2008 1 666 15/04/2008 17:03
111 aaaa 18/03/2008 1
111 aaaa 19/03/2008 1 666 15/04/2008 17:03
111 aaaa 20/03/2008 1 666 15/04/2008 17:03
111 aaaa 21/03/2008 1 666 15/04/2008 17:03
222 bbb 02/05/2008 3 666 15/04/2008 17:03
222 bbb 03/05/2008 3
222 bbb 04/05/2008 3 666 15/04/2008 17:03
222 bbb 05/05/2008 3 666 15/04/2008 17:03
222 bbb 06/05/2008 3 666 15/04/2008 17:03
222 bbb 07/05/2008 3 666 15/04/2008 17:03
222 bbb 08/05/2008 3 666 15/04/2008 17:03
222 bbb 09/05/2008 3 666 15/04/2008 17:03
333 ccc 03/04/2008 4 666 15/04/2008 17:03
333 ccc 04/04/2008 4 666 15/04/2008 17:03
for evry archiv table to another table (insert) i need to get a unique number + date time (not the second only day time +minute)
next insert ......
ID fname new_date val_holiday unique number date_time
--------------------------------------------------------------------------------------------------------------------
111 aaaa 15/03/2008 1 667 15/04/2008 17:15
111 aaaa 16/03/2008 1 667 15/04/2008 17:15
111 aaaa 18/03/2008 1
111 aaaa 19/03/2008 1 667 15/04/2008 17:15
.........................
.....................................................................667 15/04/2008 17:15
next insert ......
ID fname new_date val_holiday unique number date_time
--------------------------------------------------------------------------------------------------------------------
111 aaaa 15/03/2008 1 668 15/04/2008 08:15
111 aaaa 16/03/2008 1 668 15/04/2008 08:15
111 aaaa 18/03/2008 1
111 aaaa 19/03/2008 1 668 15/04/2008 08:15
.........................
.....................................................................668 15/04/2008 08:15
TNX
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Jul 10, 2015
I have a task where I need to process roughly 60000 excel spreadsheets and bring them into a SQL Server 2014 database. All excel files have the same format and same number of identical columns. I have set up an SSIS package that is using Foreach Loop Container to look into a folder and process these files one at a time and load them to a table. The mappings are straight-forward, no problems there.
I am attaching a sample spreadsheet with two tabs - current structure and desired structure.
Basically what I need to do is to repeat the first 7 columns based on the number of lines in a transaction.
The number of lines is variable per patient.
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Aug 19, 2015
I am getting an exception. And i don't know whether this exception is from the C# coding or SQL SERVER."Cannot roll back InsertRxs. No transaction or savepoint of that name was found.Transaction count after EXECUTE indicates a mismatching number of BEGIN and COMMIT statements. Previous count = 0, current count = 1.A transaction that was started in a MARS batch is still active at the end of the batch. The transaction is rolled back."
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Oct 23, 2015
I'm all of a sudden getting this error on a Stored Procedure that has not been touched since it was created.
Msg 266, Level 16, State 2, Procedure usp_ArchivexactControlPoint, Line 0
Transaction count after EXECUTE indicates a mismatching number of BEGIN and COMMIT statements. Previous count = 0, current count = 1.
CREATE PROCEDURE [dbo].[usp_ArchivexactControlPoint]
AS
DECLARE @TableName VARCHAR (50)
[Code] ...
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Jul 5, 2015
This index is not unique
ix_report_history_creative_id
Msg 2601, Level 14, State 1, Procedure DFP_report_load, Line 161
Cannot insert duplicate key row in object 'dbo.DFP_Reports_History' with unique index 'ix_report_history_creative_id'.
The duplicate key value is (40736326382, 1, 2015-07-03, 67618862, 355324).
Msg 3621, Level 0, State 0, Procedure DFP_report_load, Line 161
The statement has been terminated.
Exception in Task: Cannot insert duplicate key row in object 'dbo.DFP_Reports_History' with unique index 'ix_report_history_creative_id'. The duplicate key value is (40736326382, 1, 2015-07-03, 67618862, 355324).
The statement has been terminated.
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May 31, 2008
Hi All
I'm getting this when executing the code below. Going from W2K/SQL2k SP4 to XP/SQL2k SP4 over a dial-up link.
If I take away the begin tran and commit it works, but of course, if one statement fails I want a rollback. I'm executing this from a Delphi app, but I get the same from Qry Analyser.
I've tried both with and without the Set XACT . . ., and also tried with Set Implicit_Transactions off.
set XACT_ABORT ON
Begin distributed Tran
update OPENDATASOURCE('SQLOLEDB','Data Source=10.10.10.171;User ID=*****;Password=****').TRANSFERSTN.TSADMIN.TRANSACTIONMAIN
set REPFLAG = 0 where REPFLAG = 1
update TSADMIN.TRANSACTIONMAIN
set REPFLAG = 0 where REPFLAG = 1 and DONE = 1
update OPENDATASOURCE('SQLOLEDB','Data Source=10.10.10.171;User ID=*****;Password=****').TRANSFERSTN.TSADMIN.WBENTRY
set REPFLAG = 0 where REPFLAG = 1
update TSADMIN.WBENTRY
set REPFLAG = 0 where REPFLAG = 1
update OPENDATASOURCE('SQLOLEDB','Data Source=10.10.10.171;User ID=*****;Password=****').TRANSFERSTN.TSADMIN.FIXED
set REPFLAG = 0 where REPFLAG = 1
update TSADMIN.FIXED
set REPFLAG = 0 where REPFLAG = 1
update OPENDATASOURCE('SQLOLEDB','Data Source=10.10.10.171;User ID=*****;Password=****').TRANSFERSTN.TSADMIN.ALTCHARGE
set REPFLAG = 0 where REPFLAG = 1
update TSADMIN.ALTCHARGE
set REPFLAG = 0 where REPFLAG = 1
update OPENDATASOURCE('SQLOLEDB','Data Source=10.10.10.171;User ID=*****;Password=****').TRANSFERSTN.TSADMIN.TSAUDIT
set REPFLAG = 0 where REPFLAG = 1
update TSADMIN.TSAUDIT
set REPFLAG = 0 where REPFLAG = 1
COMMIT TRAN
It's got me stumped, so any ideas gratefully received.Thx
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Feb 22, 2007
I have a design a SSIS Package for ETL Process. In my package i have to read the data from the tables and then insert into the another table of same structure.
for reading the data i have write the Dynamic TSQL based on some condition and based on that it is using 25 different function to populate the data into different 25 column. Tsql returning correct data and is working fine in Enterprise manager. But in my SSIS package it show me time out ERROR.
I have increase and decrease the time to catch the error but it is still there i have tried to set 0 for commandout Properties.
if i'm using the 0 for commandtime out then i'm getting the Distributed transaction completed. Either enlist this session in a new transaction or the NULL transaction.
and
Failed to open a fastload rowset for "[dbo].[P@@#$%$%%%]". Check that the object exists in the database.
Please help me it's very urgent.
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Sep 22, 2004
A UNIQUE INDEX must inherently impose a unique constraint and a UNIQUE CONSTRAINT is most likely implemented via a UNIQUE INDEX. So what is the difference? When you create in Enterprise Manager you must select one or the other.
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Jul 20, 2005
HelloWhat should I use for better perfomance sinceunique constraint always use index ?ThanksKamil
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