How Do I Update A Portion Of Data Starting At Position 1 Of The Dataset?

Jun 11, 2007

Hello,



I need to change my usernames in a column from JSmith to ABCSmith. What would be my update statement to make that change? I need something that would basically start at position 1, for a length of 1, then use that to replace with ABC...



Here is what I have been trying:



UPDATE tblusers,
SET userLoginID = replace(userloginID, 1, 'ABC')


Thanks in advance.

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Is There Any Way To Train A Portion Of A Training Data Set From A Selected Dataset For Data Mining?

Jun 19, 2007

Hi, all experts here,



I am wondering is there any way to select only a portion of a data set to train the mining model? In this case, I mean we dont need to split the dataset in advance, what I want to do is being able to select any random portion of a selected dataset to train a mining model. Any advices?



I am looking forward to hearing from you and thanks a lot in advance for your advices and help.



With best regards,



Yours sincerely,



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Apr 21, 2008

I like to add a day to this date and also make time to 23:59:59. So end result for this table and recrods will be 2008-11-09 23:59:59 and next row 2008-11-16 23:59:59 so on.....
2008-11-08 23:00:00.000
2008-11-15 23:00:00.000
2008-11-22 23:00:00.000
2008-11-29 23:00:00.000
2008-12-06 23:00:00.000
2008-12-13 23:00:00.000
2008-12-20 23:00:00.000
2008-12-27 23:00:00.000
2009-01-03 23:00:00.000
2009-01-10 23:00:00.000
2009-01-17 23:00:00.000
2009-01-24 23:00:00.000
2009-01-31 23:00:00.000
2009-02-07 23:00:00.000
2009-02-14 23:00:00.000
2009-02-21 23:00:00.000
2009-02-28 23:00:00.000
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I have two table I like to change startdate time to 00:00:00.00 and Enddate time to 23:59:59.000

Table 1
ID Startdate Enddate

418 2008-04-28 05:00:00.000 2008-05-04 05:00:00.000
419 2008-05-05 05:00:00.000 2008-05-11 05:00:00.000
420 2008-05-12 05:00:00.000 2008-05-18 05:00:00.000
421 2008-05-19 05:00:00.000 2008-05-25 05:00:00.000
422 2008-05-26 05:00:00.000 2008-06-01 05:00:00.000
423 2008-06-02 05:00:00.000 2008-06-08 05:00:00.000
424 2008-06-09 05:00:00.000 2008-06-15 05:00:00.000
425 2008-06-16 05:00:00.000 2008-06-22 05:00:00.000
426 2008-06-23 05:00:00.000 2008-06-29 05:00:00.000
427 2008-06-30 05:00:00.000 2008-07-06 05:00:00.000
428 2008-07-07 05:00:00.000 2008-07-13 05:00:00.000
429 2008-07-14 05:00:00.000 2008-07-20 05:00:00.000
430 2008-07-21 05:00:00.000 2008-07-27 05:00:00.000
431 2008-07-28 05:00:00.000 2008-08-03 05:00:00.000
432 2008-08-04 05:00:00.000 2008-08-10 05:00:00.000
433 2008-08-11 05:00:00.000 2008-08-17 05:00:00.000
434 2008-08-18 05:00:00.000 2008-08-24 05:00:00.000
435 2008-08-25 05:00:00.000 2008-08-31 05:00:00.000

Table 2
ID Startdate Enddate
445 2008-11-03 06:00:00.000 2008-11-09 06:00:00.000
446 2008-11-10 06:00:00.000 2008-11-16 06:00:00.000
447 2008-11-17 06:00:00.000 2008-11-23 06:00:00.000
448 2008-11-24 06:00:00.000 2008-11-30 06:00:00.000
449 2008-12-01 06:00:00.000 2008-12-07 06:00:00.000
450 2008-12-08 06:00:00.000 2008-12-14 06:00:00.000
451 2008-12-15 06:00:00.000 2008-12-21 06:00:00.000
452 2008-12-22 06:00:00.000 2008-12-28 06:00:00.000
453 2008-12-29 06:00:00.000 2009-01-04 06:00:00.000
454 2009-01-05 06:00:00.000 2009-01-11 06:00:00.000
455 2009-01-12 06:00:00.000 2009-01-18 06:00:00.000
456 2009-01-19 06:00:00.000 2009-01-25 06:00:00.000
457 2009-01-26 06:00:00.000 2009-02-01 06:00:00.000
458 2009-02-02 06:00:00.000 2009-02-08 06:00:00.000
459 2009-02-09 06:00:00.000 2009-02-15 06:00:00.000
460 2009-02-16 06:00:00.000 2009-02-22 06:00:00.000
461 2009-02-23 06:00:00.000 2009-03-01 06:00:00.000
462 2009-03-02 06:00:00.000 2009-03-08 06:00:00.000

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Thanks in advance,

Jim Evans
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Hi ,



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than a table.



Same query works without error in SQL 2005 query window.



example Query;

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[Code] ...

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15
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How To Create An Update Or Delete Method In A Strongly Typed Dataset?

Mar 22, 2007

Like the subject says, I'm using strongly typed datasets.  I'm using to designer to create the datasets and the methods.  I can select and insert, but I can't update or delete.  I right click on the adapter bar and select Add Query.   I sleect 'Use SQL Statements'I select 'Update' (or 'Delete')I get a sql statement pane containing the word 'Update' ('Delete') and asking 'What data should the table load?'I can click on next, but anything else gives me errors.  I'd list them, but I'm clearly doing something wrong and it's probably obvious. Diane 

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T-SQL (SS2K8) :: Hierarchical Update Dataset - Refresh Datatable After Delete

Feb 5, 2015

Imagine the following scenario: two tables (say, "requests" and "details") are joined in a 1:n relationship on MSSQL 2008. Both tables contain an ID (autoincrement field) and a timestamp field for proper concurrency management. Data access in the frontend is provided by a typed dataset in VS 2010. There are SPs on the server which select, update, insert or delete data in each of the two tables (so, 8 SPs alltogether: uspRequestsSelect, uspDetailsInsert etc.). These SPs are used for data access in the dataset. The GUI is a Windows form with 2 datagridviews, one for request datatable and one for the child-relation-based datatable FK_request_details. So, each request shows its details. The form works well so far.

Now, trouble strikes. A business rule says: "the first details row of a request (=row with lowest ID) always has a 0 in column "additional fee". For additional detail rows, this field has to be set to constant value 45". In short: the first detail row of each request is free, second and later details are charged 45 €.

So, I created a SP "uspRequestFeeManager", which recalculates all (!) detail rows of a request. This SP is called in uspDetailsInsert, uspDetailsUpdate and uspDetailsDelete, as each of this cases causes the additional fee to be recalculated for all rows (as rowcount can change). In Management Studio, this works as well!

But: as the uspRequestFeeManager changes data even for rows the user did NOT touch, there's a concurrency exception in my frontend in the following case:

In a request with 2 detail rows (first row has fee = 0, second = 45), the user deletes the row with fee = 0. Committing via TableAdapterManager calls uspDetailsDelete, which calls uspRequestFeeManager, which sets the remaining single details row to a fee value of 0 (which is correct!). This causes TableAdapterManager.UpdateAll to fail ("concurrency exception; delete command has handled 0 of 1 expected records"), as uspRequestFeeManager has "edited" a row which the user didn't touch, and thus updated its timestamp as well. So, the list is out of sync.

The uspRequestFeeManager looked like a good idea... but it seems not to be.

Approach would be: instead of calling the uspRequestFeeManager from within the SP, call it programmatically after TableAfterManager.UpdateAll, and after that, 're-fill' the details datatable with the updated data. But that would transfer business logic from server to client. I don't like that...

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