Does anyone know of a way to emulate the LIMIT clause that is available in Oracle and MySQL?
I could greatly improve my performance on my web application if I could figure out how to do it. I am using TOP right now to just pull back the records needed, but as with any page with many results, once you get 10 pages in you're pulling way too many records accross the wire.
The LIMIT clause works great in the other DBMS's, but MS SQL 2K does not have it. :(
I am a newbie to SQL Server. I have a problem, in filtering the records returned by a query. I have a table which contains 1 million records, it has a user defined primary key which is of character type. The problem is i need to filter the output of a select query on the table based on two parameters i send to that query. The first parameter will be the starting row number and the second one is the ending row number. I need a procedure to do this.
For Eg: MyProc_GetRowsFromBigTable(startRowNo,endRowNo) should get me only the rows in the specified range.
OK, I'm troubleshooting a performance issue on one of our production servers, but I really can't t-shoot and tweak in real-time, so I took a snapshot of "a day in the life of" my production server using the profiler.
I want to run the sql commands I collected on another server I set up identical to production, and play around there.
Does anyone know of a good tool to "replay" those captured commands onot another server?
Is there a way to insert multiple records into a database table when you're just given "count" of the number of rows you want? I want to do this in ONE insert statment, so I don't want a solution that loops round doing 100 inserts - that would be too inefficient.
For example, suppose I want to create 100 card records starting it card number '1234000012340000'. Something like this ...
declare @card_start dec(16) set @card_start = '1234000012340000' declare @card_count int set @card_count = 100
Say that I have employee data for 2010-2015. I have a pivot table that displays employee data for all the different months in 2015 I want each month to show all people who have been employed since the start of time until and including that month. So
for January 2015 it should show all people employed from January 2010 to January 2015. for February 2015 it should show all people employed from January 2010 to February 2015. for March 2015 it should show all people employed from January 2010 to March 2015.
How can I write a measure for this? I have a date table set up.
With the function below, I receive this error:Error:Transaction count after EXECUTE indicates that a COMMIT or ROLLBACK TRANSACTION statement is missing. Previous count = 1, current count = 0.Function:Public Shared Function DeleteMesssages(ByVal UserID As String, ByVal MessageIDs As List(Of String)) As Boolean Dim bSuccess As Boolean Dim MyConnection As SqlConnection = GetConnection() Dim cmd As New SqlCommand("", MyConnection) Dim i As Integer Dim fBeginTransCalled As Boolean = False 'messagetype 1 =internal messages Try ' ' Start transaction ' MyConnection.Open() cmd.CommandText = "BEGIN TRANSACTION" cmd.ExecuteNonQuery() fBeginTransCalled = True Dim obj As Object For i = 0 To MessageIDs.Count - 1 bSuccess = False 'delete userid-message reference cmd.CommandText = "DELETE FROM tblUsersAndMessages WHERE MessageID=@MessageID AND UserID=@UserID" cmd.Parameters.Add(New SqlParameter("@UserID", UserID)) cmd.Parameters.Add(New SqlParameter("@MessageID", MessageIDs(i).ToString)) cmd.ExecuteNonQuery() 'then delete the message itself if no other user has a reference cmd.CommandText = "SELECT COUNT(*) FROM tblUsersAndMessages WHERE MessageID=@MessageID1" cmd.Parameters.Add(New SqlParameter("@MessageID1", MessageIDs(i).ToString)) obj = cmd.ExecuteScalar If ((Not (obj) Is Nothing) _ AndAlso ((TypeOf (obj) Is Integer) _ AndAlso (CType(obj, Integer) > 0))) Then 'more references exist so do not delete message Else 'this is the only reference to the message so delete it permanently cmd.CommandText = "DELETE FROM tblMessages WHERE MessageID=@MessageID2" cmd.Parameters.Add(New SqlParameter("@MessageID2", MessageIDs(i).ToString)) cmd.ExecuteNonQuery() End If Next i ' ' End transaction ' cmd.CommandText = "COMMIT TRANSACTION" cmd.ExecuteNonQuery() bSuccess = True fBeginTransCalled = False Catch ex As Exception 'LOG ERROR GlobalFunctions.ReportError("MessageDAL:DeleteMessages", ex.Message) Finally If fBeginTransCalled Then Try cmd = New SqlCommand("ROLLBACK TRANSACTION", MyConnection) cmd.ExecuteNonQuery() Catch e As System.Exception End Try End If MyConnection.Close() End Try Return bSuccess End Function
 set buyerset as exists(dimcustomer.leval02.allmembers,custoertypeisRetailers,"Sales") set saleset(buyerset) set custdimensionfilter as {custdimensionmemb1,custdimensionmemb2,custdimensionmemb3,custdimensionmemb4} set finalset as exists(salest,custdimensionfilter,"Sales") Set ProdIP as dimproduct.dimproduct.prod1 set Othersset as (cyears,ProdIP) (exists(([FINALSET],Othersset,dimension2.dimension2.item3),[DimCustomerBuyer].[ParentPostalCode].currentmember, "factsales")).count
I use SQL 2000 I have a Column named Bool , the value in this Column is 0�0�1�1�1 I no I can use Count() to count this column ,the result would be "5" but what I need is "2" and "3" and then I will show "2" and "3" in my DataGrid as the True is 2 and False is 3 the Query will have some limited by a Where Query.. but first i need to know .. how to have 2 result count could it be done by Count()? please help. thank you very much
SQL 2000I have a table with 5,100,000 rows.The table has three indices.The PK is a clustered index and has 5,000,000 rows - no otherconstraints.The second index has a unique constraint and has 4,950,000 rows.The third index has no constraints and has 4,950,000 rows.Why the row count difference ?Thanks,Me.
The following query returns a value of 0 for the unit percent when I do a count/subquery count. Is there a way to get the percent count using a subquery? Another section of the query using the sum() works.
Here is a test code snippet:
--Test Count/Count subquery
declare @Date datetime
set @date = '8/15/2007'
select -- count returns unit data Count(substring(m.PTNumber,3,3)) as PTCnt, -- count returns total for all units
(select Count(substring(m1.PTNumber,3,3))
from tblVGD1_Master m1
left join tblVGD1_ClassIII v1 on m1.SlotNum_ID = v1.SlotNum_ID
Where left(m1.PTNumber,2) = 'PT' and m1.Denom_ID <> 9
and v1.Act = 1 and m1.Active = 1 and v1.MnyPlyd <> 0
and not (v1.MnyPlyd = v1.MnyWon and v1.ActWin = 0)
and v1.[Date] between DateAdd(dd,-90,@Date) and @Date) as TotalCnt, -- attempting to calculate the percent by PTCnt/TotalCnt returns 0 (Count(substring(m.PTNumber,3,3)) /
(select Count(substring(m1.PTNumber,3,3))
from tblVGD1_Master m1
left join tblVGD1_ClassIII v1 on m1.SlotNum_ID = v1.SlotNum_ID
Where left(m1.PTNumber,2) = 'PT' and m1.Denom_ID <> 9
and v1.Act = 1 and m1.Active = 1 and v1.MnyPlyd <> 0
and not (v1.MnyPlyd = v1.MnyWon and v1.ActWin = 0)
and v1.[Date] between DateAdd(dd,-90,@Date) and @Date)) as AUPct -- main select
from tblVGD1_Master m
left join tblVGD1_ClassIII v on m.SlotNum_ID = v.SlotNum_ID
Where left(m.PTNumber,2) = 'PT' and m.Denom_ID <> 9
and v.Act = 1 and m.Active = 1 and v.MnyPlyd <> 0
and not (v.MnyPlyd = v.MnyWon and v.ActWin = 0)
and v.[Date] between DateAdd(dd,-90,@Date) and @Date
When creating a database, SQL Server 6.5 seems to have a 2 gig limit. What I mean is that if the device chosen is over 2 gigs SQL Server displays the size of the device as anegative number. This prevents me from being able to expand the database when I need to. Can anyone tell me why this is so, and if there`s anyway around it??
we all know mysql: select * from table limit ?1, ?2
equals
sqlserver: SELECT TOP ?2 * FROM table WHERE (IDENTITYCOL NOT IN (SELECT TOP ?1 IDENTITYCOL FROM table order by IDENTITYCOL)) order by IDENTITYCOL
but the below SQL in mysql,how to convert?I enmesh........... select pageid,pagename,pageaddr,pageauditflag,pageartaudi tflag,startplaytime from pageinfo where entryid= ?1 and startplaytime= ?2 limit ?3, ?4
hi,I have a question.Maybe You know the equivalent to command LIMIT from MySQLI couldn`t find something like this in MS SQLPSI try to display 10 records begining form e.g. 4 sort by idsomething like: "SELECT * FROM table WHERE name=... LIMIT 4, 10 ORDER BY id"in MySQLthanx,Urban
I recently read up and found an msdn forum post that said the 4gb limit only applied to data files not log files.
However recently i had an error on a sql express database saying that the log file was full, the database log file was set to auto grow and there was plenty of space left.
So i am guessing the 4gb limit applies to any database file mdf or ldf, is this correct ?
I have the fields in my table: ID, Title, Description, Price, ImageData, Active I only want it to be possible to have two records at any time with Active=Yes. Active is a Bit, Yes/No, field. Any help is appreciated. Chuck
hi,i have a union statement that works like a charm:SELECT [Name], [EventID] AS [ItemID], [TourID], [Date], NULL AS [StartDate], [Date] AS [SortDate], [Type] FROM [Events] WHERE [TourID] IS NULL AND AccessLevel <= @AuthenticationLevel
UNION
SELECT [Name], [TourID] AS [ItemID], [TourID], NULL AS [Date], [StartDate], [StartDate] AS [SortDate], '2' AS [Type] FROM [Tours] WHERE AccessLevel <= @AuthenticationLevel
ORDER BY [SortDate] this statement selects all the records i want from both tables, and orders the entire new table by sort date.what i want to do is to add a limitation on the number of records. i have tried using both LIMIT and TOP commands, but i can't get it working. both of the below statements give me a syntax error saying "Incorrect syntax near the keyword 'ORDER'"first try:SELECT * FROM (<same_statement_as_above>) ORDER BY [SortDate] LIMIT 2second try:SELECT TOP 2 * FROM (<same_statement_as_above>) ORDER BY [SortDate]what am i doing wrong, and how do i achieve what i want?i am working with mssql server 2005 (express locally, and standard on my hosting service). thanks for your help!
I have an application with a DAL that has an interface with SQL Server. The application has 400 users that open the web forms. My question is: Is there a limit of the parallel connections that can be opened? Or the IIS is managing all the access to the DB? Should I worry about the performance Or it's normal behaviour for ASP.NET applications?
SQL takes all CPU resource on some of the intensive queries. Is any way to make sure there is something left for other tasks to be processed? Let's say limit SQL to use no more than 80% of CPU.
There is at present (as we accidently found) limitation of MSSQL to return per row maximally 8060 bytes. Message like this comes: "Cannot create a row of size 8279 which is greater than the allowable maximum of 8060". My questions are : - Is there any way how to pass it? If I split into more tables (as I have it now) and ask for result where these tables are connected over any ID the result is the same. If I use stored procedures it seems to be ok. Any other idea? - Will be this ok in SQL server 2005?
I have an application that uses a small SQL Server database. What I need is to prevent the access of an amount of users to the database. At the beginning I want to limit the access only for 2 users but I want to be able in the future to grant the access to more.
MySQL has a convenient syntax for paging data that looks like this: SELECT * FROM MyTable LIMIT 10, 20 That would select 10 records, starting from record 20, so that it returns records 20 - 30. This is convenient way to page data, without returning anymore rows than than you need.
However, MS SQL doesn't appear to support that syntax. What is the equivalent sql code to select any N rows from an arbitrary starting point, without having to create a stored procedure?
Quick question, is there a record limit in MSSQL assuming that we don't use a identity key. I am going to be using a table to sava mail server logs. It will create about 5000 records a minute. Also are there any perfomrance issues once you reach a certain numberof records, assuiming i am indexing one of the columns.
I have a extremely large table and out of that I just need 2 records but based on some logic . For example
IF EMPLOYEE_ADDRESS <> NULL set Employee_HAS_HOME to 1 ELSE set Employee_HAS_HOME to 0
Here I can not use just first 1000 records as I am not sure If I will cover the second condition in first 1000 rows . Then I came up with solution like : -
select * from employee_table where employee_address <> NULL LIMIT 1 UNION select * from employee_table where employee_address = NULL LIMIT 1
And this will give me 2 records which I can use for my testing . But unfortunately this is not working.
Hi, I am working on building SSIS Packages which will need to extract records from OLTP Servers, and i am half way through building the package, i wanted to test if it is able to extract the records from a particular table on OLTP....basicall i want to test if the package built so far running good?....but the extraction part takes ages as there are millions of records in the OLTP ...i want to limit those records to say some thousands so that i can test it and work on cleaning part in the staging and later after all the chunks are working perfectly i want to set it completely to run for extracting all the millions of records.
