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When executing a stored procedure in .NET code, are all statements inside the procedure considered to be a unit of work, or do I have to run this procedure inside a transaction (either by modifying the procedure, or by starting and comitting a transaction in .NET code)?
Thanks in advance!
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In SQL Server, each individual statement, whether executed as a single batch, as a statement within a batch, or within a stored procedure, is independent. If you need the ACID properties to apply over multiple statements, you need to create a transaction.
In a stored procedure this is easiest to do with the BEGIN TRANSACTION statement. Use COMMIT TRANSACTION when you're done, to keep the results, or ROLLBACK TRANSACTION to discard them. Be aware that the transaction is not automatically rolled back for non-fatal errors, that is, errors that do not abort the batch. You should check @@ERROR after each statement to check whether there was an error.
DoEvents: Generating unexpected recursion since 1991
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Hi,
I have an application which uses Pervasive SQL as a backend.
Is there any tool for Pervasive similar to Microsoft's Profiler for MS SQL server?
i would like to monitor the queries being executed behind the application?
Please help me.
Akash Agarwal
modified on Monday, June 30, 2008 9:27 AM
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sql schema tblstudent(sid,sname)
i need a query like: select count(sid),count(sname) from tblstudent where sname=john;
Where count(sid) represent total number of student.
anyone help me plz...
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Are you getting any error while executing this query? What's your requirement? Try modify the query as:
Select count(sid), count(sname) from tblstudent where sname = john group by sid, sname.
Success is the good fortune that comes from aspiration, desperation, perspiration and inspiration.
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mdgkabir wrote: sql schema tblstudent(sid,sname)
i need a query like: select count(sid),count(sname) from tblstudent where sname=john;
Where count(sid) represent total number of student.
It looks like you just need to know how many rows with "john" are there in your table...
Try this:
select count(sid) from tblStudent where sName='john';
HTH
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Hi guys,
I have created rdl file with 80 columns data table. I will hide the columns if data column is blank. My problem here is, if i export 1 page of data into pdf format then i am getting three pages of report. Here last two pages are blank.
Actually what is happening here is, I am selecting only 20 columns out of 80 columns. So report is showing only 20 columns and hiding remaining 80 columns. It is just hiding the columns but it is using that 60 columns space. Thats why i am getting two blank page.
Could any one tell me, how can i remove/avoid column space if data column is blank.
Thanks in advance.
Regards,
Prabhakaran.
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Hello friends,
I want to create a temporary table at runtime. After that a cursor will be called to fetch necessary records. I want to insert each of these records into a temp table. How a single stored proc will do this? Any help..
Amit
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Presumably SQL server and I hope 2005
Declare @Tbl Table(Field1 int, Field2 varchar(20))
Insert @Tbl
Select Field1, Field2
From SomeTable
You now have a table var with your data - use a while or cursor to do your processing
Never underestimate the power of human stupidity
RAH
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Hi All
I thought I'd put this to you, my fellow devs, as I just cant decide the most efficient route! 
Suppose I have 2 tables, 1: id, productid, datedelivered, qty AND 2: id, productid, datesold, qty
I would like to end up having a result with: productid, monthvalue, openingbal, delivered, sold, closingbal
(monthvalue being something like 2008-01-01, i.e. each like is the stock recon for the month)
Now I know there are a few ways of doing this, one I thought of is with a cursor. But not being too clued up with the new features that 2005 provides I am not sure what the most efficient way would be ... any ideas? 
Thanks.
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Francois Searle wrote: one I thought of is with a cursor
Stored procedures would probably be better performance-wise.
"The clue train passed his station without stopping." - John Simmons / outlaw programmer
"Real programmers just throw a bunch of 1s and 0s at the computer to see what sticks" - Pete O'Hanlon
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Yes, I agree it should be within a SP, but I was referring more to the SQL within the SP, the methodology as such.
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If you are going the standard sql route and it is slow, maybe query analyzer could shed some light for you where bottlenecks are.
"The clue train passed his station without stopping." - John Simmons / outlaw programmer
"Real programmers just throw a bunch of 1s and 0s at the computer to see what sticks" - Pete O'Hanlon
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A cursor is probably one of the worst ways you could do this. You should always attempt, where possible, to use set based queries as they are what database engines are designed to do.
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I know cursors are the worst way, but currently my attempt at doing it using "normal" sql queries is running too long.
Surely this must be a common query? I mean there are so many scenarios where this type of "dataset" is needed.
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I'm using ASP.NET and MySQL. I want to count all posts that were added before or in a specific month. The query is run in a loop and the results will be put into a graph but I get really strange numbers in some months.
"SELECT COUNT(*) FROM posts WHERE YEAR(timestamp) <= YEAR(?date) AND MONTH(timestamp) <= MONTH(?date)"
What is the correct way to do this?
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Sunday8PM wrote: I get really strange numbers in some months
Like what? From a quick glance your query looks okay, cannot tell for sure without seeing what kind of data you have in the tables...
"The clue train passed his station without stopping." - John Simmons / outlaw programmer
"Real programmers just throw a bunch of 1s and 0s at the computer to see what sticks" - Pete O'Hanlon
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Well, the height of each bar in the graph are supposed to increase from left to right so I can see what the total was after each month. The result I'm getting though is not a steady increase. It's going up and down, up and down, up and down and then there's obviously something wrong because it's impossible that it would go down if it worked correctly.
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Hi,
Sunday8PM wrote: YEAR(timestamp) <= YEAR(?date) AND MONTH(timestamp) <= MONTH(?date)
this is logically incorrect; if you want to check date1 < date2
by year and month, you need the equivalent of
year1 < year2 OR (year1==year2 AND month1<month2)>
The way you did it you missed all months that have year1<year2 and month1>=month2
One way of doing it right in a single compare is by combining months and years:
(12*year1 + month1) < (12*year2 + month2)
modified on Saturday, June 28, 2008 4:21 PM
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Thank you very much! I see now when you explain it! 
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I have a table name victim in which there is a field called "Gender". It has three values 1.Male
2.Female
3.Child
What I want is to write a query that will count all entries and the total of all entries.
Something like below
Male Female Child Total
1 2 0 3
0 4 3 7
Can any 1 help me please on how to write this query?
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why there is two rows? is this result of group by?
BTW I think the simplest way could be declaring function that take some argument and return your desired result.
i don't know the logic but if you have some unique fields at least in group by sets you can also use derived queries(or views)
I Wish the Life Had CTRL-Z
Wizard's First Rule : People are fool,they believe what they want to believe or what they afraid to believe
www.subaitech.blogspot.com
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Select count(*) Gender from Table Group By Gender
Never underestimate the power of human stupidity
RAH
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Hi.
I think sub select is the simplest way:
select (Select count(*) from Table where Gender = 1) as MaleCount, (Select count(*) from Table where Gender = 2) as FemaleCount, (Select count(*) from Table where Gender = 3) as ChildCount, count(*) as TotalCount from Table
Ugly but working...
Kjetil
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