Forum Replies Created

Viewing 15 posts - 49,216 through 49,230 (of 49,571 total)

  • RE: To get latest 3 inserted records from a table without date field or time stamp

    SQL does not keep any form of rowid or insert time that you can use to pick up frst or last inserted record.

    If you want to be able to get...

  • RE: nullability

    It should be doable as a table constraint

    Something like something like (ColA IS NULL AND ColB IS NULL) OR (ColA IS NOT NULL AND ColB IS NOT NULL)

  • RE: SQL Server information resources

    These are the RSS feeds that I watch. Note that my job is SQL performance tuning and optimisation, so some of these might be a much lower level than you're...

  • RE: Help with a Stored Procedure......

    Is this comp sci homework?

    I'd suggest a cursor (forward_only, read_only) over the instructors and use a select statement for each to build up the list of courses. Something like

    SELECT...

  • RE: Can a long running select query cause locking and impact an update transaction?

    I would suggest NOLOCK as a last resort. Look at optimising your select as much as possible to get it running faster, also look at optimising the update. Firstly you...

  • RE: Can a long running select query cause locking and impact an update transaction?

    Yes it can. As that piece from books online stated, a select takes shared locks for the duration of it's execution. A shared lock means that while other reads can...

  • RE: 70-431

    Thanks Todd. I noticed the E-Learning. How long does it take? I was considering taking it during lunch breaks next week.

    I've got a lot of experience with 2000, and have...

  • RE: Cursor or not

    There's not that much difference between a cursor that processes a set of records one by one and a while loop that processes a set of records one by one....

  • RE: Is it possible to trap or log FATAL ERROR from a stored proc?

    Can you give an example of @sql_string?

    There is an error avoidence technique that you could use:

    IF EXISTS (SELECT 1 FROM sysobjects WHERE name='TableToBeDropped')

     DROP TABLE TableToBeDropped

  • RE: Help with Left Join in query and ordering

    Yes, but it will require a subquery to do the calculation

    SELECT PRODUCTS.PRODUCT_ID, PRODUCTS.P_NAME, VOTES.V_SCORE

    FROM [PRODUCTS]

    LEFT JOIN [VOTES]

      ON VOTES.PRODUCT_ID = PRODUCTS.PRODUCT_ID AND

           VOTES.USER_ID = 3

    LEFT OUTER JOIN (SELECT Product_ID,...

  • RE: Correlate dbname and his dbfile (data+log)

    I'm not a fan of dynamic SQL, but this is a place where it will help.

    DECLARE @DBName varchar(20)

    SET @DBName = 'msdb'

    DECLARE @sSQL VARCHAR(500)

    SET @sSQL = 'SELECT name, filename FROM '...

  • RE: Writing queries best practice

    I mostly agree with Marco. Here's a suggested rewrite

    SELECT Table01.field01, Table01.field02, Table01.field03, Table01.field04, Table01.field05

     FROM Table01 LEFT OUTER JOIN Table02 ON Table01.field03 = Table02.field03

     LEFT OUTER JOIN Table03 ON Table01.field03 = Table03.field03

     WHERE...

  • RE: Changing collation.

    You can change TempDB's collation by changing the colation of then entire server. That will involve rebuilding the master database with the new collation. Look up Rebuildm in books online.

    If you are...

  • RE: Updates which don''''t participate in a transaction.

    How about building up an insert/update statement as a string then executing it after the rollback. Something like this

    BEGIN TRANSACTION

    Insert into VeryImportantTable (...) values (...)

    IF @@Error!=0

    BEGIN

    DECLARE @sSQL VARCHAR(1000)

    SET @sSQL =...

  • RE: Is it possible to trap or log FATAL ERROR from a stored proc?

    Yes you can. You can't trap the ones above 20, but those are written into the error log. 11 through 19 are standard errors, less than 11 are warnings or...

Viewing 15 posts - 49,216 through 49,230 (of 49,571 total)