RE: Re: How important is your Express or Web Edition database? Please weigh in--

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On Mon, 2009-03-02 at 09:30 -0600, Boyd, Todd M. wrote:
> > -----Original Message-----
> > From: Andrew Ballard [mailto:aballard@xxxxxxxxx]
> > Sent: Saturday, February 28, 2009 12:05 AM
> > To: ash@xxxxxxxxxxxxxxxxxxxx
> > Cc: Boyd, Todd M.; PHP General list
> > Subject: Re:  Re: How important is your Express or Web Edition
> > database? Please weigh in--
> > 
> > On Fri, Feb 27, 2009 at 7:32 PM, Ashley Sheridan
> > <ash@xxxxxxxxxxxxxxxxxxxx> wrote:
> > > On Fri, 2009-02-27 at 16:41 -0600, Boyd, Todd M. wrote:
> > >> > -----Original Message-----
> > >> > From: Andrew Ballard [mailto:aballard@xxxxxxxxx]
> > >> > Sent: Friday, February 27, 2009 3:26 PM
> > >> > To: Bastien Koert
> > >> > Cc: Shawn McKenzie; php-general@xxxxxxxxxxxxx
> > >> > Subject: Re:  Re: How important is your Express or Web
> > Edition
> > >> > database? Please weigh in--
> > >> I use SQLExpress (SQL Server Express) all the time at work for
> > prototyping and such... although, I have to say--if my company hadn't
> > installed it on my machine to begin with, and they weren't running SQL
> > Server 2005 on the production servers, I would rather just use a
> > private MySQL installation for prototyping and then push to a MySQL
> > production server. Alas...
> > >>
> > >>
> > >> // Todd
> > > For me it's MySQL all the way. My company is too cheap to pay for
> > later
> > > versions of MS SQL Server, so the versions we have there are *very*
> > > limited in features (for example, no limit function!) MySQL also
> > seems a
> > > lot faster for me too. I regularly deal with large databases (think
> > > millions of records) and MSSQL is a real bottleneck here, whereas
> > MySQL
> > > seems fine (althogh, it is running on Linux, which frees up more
> > > resources for actually getting stuff done!)
> > >
> > > Oh, funny thing. I filled in the questionnaire above, and when it got
> > to
> > > the final 'thanks' page, I clicked the button, and it bombed out to a
> > > completely blank page. Doesn't bode too well for a company attempting
> > to
> > > sell a product for use in enterprise situations!
> > >
> > >
> > > Ash
> > > www.ashleysheridan.co.uk
> > >
> > 
> > It all depends on what you need. I know from your previous posts that
> > you're not very well disposed to SQL Server, but I've used it quite a
> > bit now for the last 8 years and haven't really had any problems with
> > performance. I'll grant that it doesn't have the LIMIT clause (Is it
> > part of the actual ANSI SQL spec, or is it something handy that MySQL
> > added to their product?) The newer versions offer a row number
> > function that can be used to provide the the same functionality, but
> > I'll admit it is not nearly as simple as being able to say LIMIT 25,
> > 50.
> > 
> > While I like MySQL, it has its oddities as well. I've run into
> > situations where I had to add ORDER BY clauses to UPDATE statements
> > (I'm not sure that's really valid SQL either) because it updated the
> > rows sequentially and validated a unique index after each row rather
> > than after all the rows were processed. I wish it would support CHECK
> > constraints. And as convenient as I've found the SET and ENUM
> > datatypes in simple databases, I'm coming to the notion that they are
> > not a good idea in most situations. And while the availability of
> > different engines has benefits, it can also cause issues.
> 
> Wait, wait, wait... I know SQL Server doesn't have "LIMIT", but haven't you guys ever used "TOP"? As in...
> 
> select top 10 * from some_table where some_column = 'some_value';
> 
> ?? I'm not sure about getting lower bounds (maybe there is a BOTTOM, but I'm too lazy right now)... but if you're just trying to limit the number of rows in your result with a cap, then TOP does the trick just fine.
> 
> I've had to do a lot of searching to find ways to do stuff in SQL Server that were already natural for me in MySQL (as I learned on MySQL and develop independently with it), but I have yet to be completely taken aback by something that's missing in SQL Server. (I am a little miffed that you have to do a sub-query on information_schema in order to test for object existence, though.)
> 
> Anyway, I don't see what all the anti-MSSQL sentiment is all about. I use it all the time (SQL Express, SQL Server 2000 and 2005 Professional) and I don't find myself wanting for something I could have done in MySQL but cannot do in MSSQL.
> 
> SSIS packages are pretty sweet to work with, BTW, if you've ever needed to build DTS solutions. :D
> 
> My 2c,
> 
> 
> // Todd
There isn't a BOTTOM, the solution looks something like this:

SELECT * FROM (SELECT TOP 10 * FROM (SELECT TOP 20 * FROM table WHERE
clause ORDER BY col) AS temp ORDER BY col DESC) as temp2 ORDER BY col

It's an awful mess, but was the only way I found to select results x to
y in a reliable manner.


Ash
www.ashleysheridan.co.uk


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