Hello,
I have a web application which retrieves values from a table and the table has grown really huge now. This has slowed down the performance and I need to do something else instead of the select statement that I currently have. Can cursors be a solution?
Any help/suggestions would be greatly appreciated.
Thanks,
Subha
Sriram writes "Hi,
I want to retrieve only the first n rows from a query which returns a large number of rows.
Say,
select empno, name from emp where deptno=100
returns 1000 rows.
I want to improve the query so that it returns only the first 10 rows and not 1000 rows.
Thanks in Advance,
Sriram."
i need to retrieve a large amount of data from the sql server database and make changes to one field and put the data back using a console application. how do i do it?
View 3 Replies View RelatedHi,
My application needs to retrieve data from a table which has more than 15 lakh records. The records keep increasing in thousands every 15 days.
Is there anyway i can reduce the time to retrieve? basically i have a select statement with a few conditions and a clause for the id's of these records.
Hi,
We are using a simple CLR sp where an SQL statement is executed inside the same. THe execution happens in a server of different context that is connected inside CLR sp. The result set is returned in tabular format using pipe. But, when we access the result as below
create table #t(c1 int, c2 int, c3 int)
insert #t exec TestProc
select * from #t
it give the following error. Any help is appreciated. It seems to be some error with distibuted transaction. We tried adding BEgin Distributed trnasaction, but still the error comes.
Msg 6522, Level 16, State 1, Procedure TestProc, Line 0
A .NET Framework error occurred during execution of user-defined routine or aggregate "TestProc":
System.Transactions.TransactionException: The partner transaction manager has disabled its support for remote/network transactions. (Exception from HRESULT: 0x8004D025) ---> System.Runtime.InteropServices.COMException: The partner transaction manager has disabled its support for remote/network transactions. (Exception from HRESULT: 0x8004D025)
System.Runtime.InteropServices.COMException:
at System.Transactions.Oletx.ITransactionShim.Export(UInt32 whereaboutsSize, Byte[] whereabouts, Int32& cookieIndex, UInt32& cookieSize, CoTaskMemHandle& cookieBuffer)
at System.Transactions.TransactionInterop.GetExportCookie(Transaction transaction, Byte[] whereabouts)
System.Transactions.TransactionException:
at System.Transactions.Oletx.OletxTransactionManager.ProxyException(COMException comException)
at System.Transactions.TransactionInterop.GetExportCookie(Transaction transaction, Byte[] whereabouts)
at System.Data.SqlClient.SqlInternalConnection.EnlistNonNull(Transaction tx)
at System.Data.SqlClient.SqlInternalConnection.Enlist(Transaction tx)
at System.Data.SqlClient.SqlInternalConnectionTds.Activate(Transaction transaction)
at System.Data.ProviderBase.DbConnectionInternal.ActivateConnection(Transaction transaction)
at System.Data.ProviderBase.DbConnectionPool.GetConnection(DbConnection owningObject)
at System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection)
at System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory)
at System.Data.SqlClient.SqlConnection.Open()
at Class1.RunRemoteMetalProc()
Regards,
Kart
Hi all,
i have a problem ...
if there is a query that returns so many rows. I want to know where the result is stored? for example:what database?, what table?, what transaction log file?
Thanks fr reading.
While running query below on SQL Server 2005 (Build 3790: Service Pack 2):
SELECT DISTINCT pkg.PrimaryBarcode
FROM dbo.Package AS pkg (NOLOCK)
JOIN dbo.PackageCycle AS pc (NOLOCK)
ON pkg.PackageKey = pc.PackageKey
WHERE (pkg.BillCycleDateKey >= 20061201) OR
(pkg.BillStatusKey = 1)
I received a partial result set followed by
An error occurred while executing batch. Error message is: Couldn't replace text
I suspect this is a memory issue, but cannot find any reference to this particular msg on the Microsoft forums or the other 3rd party forums. PrimaryBarcode is a varchar(50)
I am not sure where to go from here. I would appreciate any ideas. Thanks in advance.
Cheers,
Mike Byrd
I have an SSIS package (SQL 2005 SP2 and Visual Studio SP1) that does the following:
OLE DB Source --> Conditional Split --> OLE DB Command #1 --> OLE DB Command #2
The source reads from database A. Each row is variable-width and up to several KB wide, including two ntext columns.
Command #1 executes a stored proc in db A, using a bunch of inputs and two output parameters.
Cmd #2 executes an update in db B, using the two output params from cmd #1 as inputs.
When the rowset size is small, around 500, everything works fine.
However, when the rowset size is larger, around 5000, SSIS hangs when trying to execute cmd #2. The profiler shows that none of the cmd #2 updates are ever executed. No error messages are produced, and the connection never times out -- it just hangs forever.
If I replace the cmd #2 updates with a simple select, everything works fine. If I replace it with a stored proc that does an update, it hangs.
The work-around I came up with was to create a new table in db B, and do inserts into the table, but unless I'm missing something, this still seems like a bug...
I have a query below which filters detail field in the #TempLogins table. The details field is a text field which contains many types of text strings, some containing urls that have parts like "ResultID=5" which is what is contained in the ResultIDSearch and ResultSetIDSearch fields. The records with entries like "ResultID=5" are the ones I'm trying to filter for.
The problem I have is that the query takes way too long to run. The TempLogin table has around 200 K records and the TempSearch table has around 80 K records.
select * from #TempLogins a where exists
(select 1 from #TempSearch t1 where
a.detail like '%' + t1.ResultIDSearch + '%'
or
a.detail like '%' + t1.ResultSetIDSearch + '%')
so async cursor population is supposed to create the cursor and return the cursor id quickly, while the server works on async populating the results. For a keyset-driven cursor, SQL Server stores the key sets in tempdb, which it then uses to fetch data for cursor results. Anyway, this works fine for smaller tables, but I'm finding for large result sets, the async cursor population is very slow and indeed seems to approximate synchronous time. The wait stat I get while it is running (supposedly asynchronously) is TRANSACTION_MUTEX.
Example:
--enable async cursor
exec dbo.sp_configure 'cursor threshold', 0; reconfigure;
declare @cursor int, @stmt nvarchar(max), @scrollopt int, @ccopt int, @rowcount int;
--example of giant result set
set @stmt = 'select * from sys.all_objects o1, sys.all_objects o1';
[code]...
Note that using the SQL "select * from sys.all_objects o1" is much faster than "select * from sys.all_objects o1, sys.all_objects o2". However, if cursor population is async, I'd expect the time to return a cursor id to be similar between the two.
I need to send the result of a procedure to an update statement.Basically updating the column of one table with the result of aquery in a stored procedure. It only returns one value, if it didnt Icould see why it would not work, but it only returns a count.Lets say I have a sproc like so:create proc sp_countclients@datecreated datetimeasset nocount onselect count(clientid) as countfrom clientstablewhere datecreated > @datecreatedThen, I want to update another table with that value:Declare @dc datetimeset @dc = '2003-09-30'update anothertableset ClientCount = (exec sp_countclients @dc) -- this line errorswhere id_ = @@identityOR, I could try this, but still gives me error:declare @c intset @c = exec sp_countclients @dcWhat should I do?Thanks in advance!Greg
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I have an Execute SQL Task that executes "select count(*) as Row_Count from xyztable" from an Oracle Server. I'm trying to assign the result to a variable. However when I try to execute I get an error:
[Execute SQL Task] Error: An error occurred while assigning a value to variable "RowCount": "Unsupported data type on result set binding Row_Count.".
Which data type should I use for the variable, RowCount? I've tried Int16, Int32, Int64.
Thanks!
Hi all,
I copied the following code from Microsoft SQL Server 2005 Online (September 2007):
UDF_table.sql:
USE AdventureWorks;
GO
IF OBJECT_ID(N'dbo.ufnGetContactInformation', N'TF') IS NOT NULL
DROP FUNCTION dbo.ufnGetContactInformation;
GO
CREATE FUNCTION dbo.ufnGetContactInformation(@ContactID int)
RETURNS @retContactInformation TABLE
(
-- Columns returned by the function
ContactID int PRIMARY KEY NOT NULL,
FirstName nvarchar(50) NULL,
LastName nvarchar(50) NULL,
JobTitle nvarchar(50) NULL,
ContactType nvarchar(50) NULL
)
AS
-- Returns the first name, last name, job title, and contact type for the specified contact.
BEGIN
DECLARE
@FirstName nvarchar(50),
@LastName nvarchar(50),
@JobTitle nvarchar(50),
@ContactType nvarchar(50);
-- Get common contact information
SELECT
@ContactID = ContactID,
@FirstName = FirstName,
@LastName = LastName
FROM Person.Contact
WHERE ContactID = @ContactID;
SELECT @JobTitle =
CASE
-- Check for employee
WHEN EXISTS(SELECT * FROM HumanResources.Employee e
WHERE e.ContactID = @ContactID)
THEN (SELECT Title
FROM HumanResources.Employee
WHERE ContactID = @ContactID)
-- Check for vendor
WHEN EXISTS(SELECT * FROM Purchasing.VendorContact vc
INNER JOIN Person.ContactType ct
ON vc.ContactTypeID = ct.ContactTypeID
WHERE vc.ContactID = @ContactID)
THEN (SELECT ct.Name
FROM Purchasing.VendorContact vc
INNER JOIN Person.ContactType ct
ON vc.ContactTypeID = ct.ContactTypeID
WHERE vc.ContactID = @ContactID)
-- Check for store
WHEN EXISTS(SELECT * FROM Sales.StoreContact sc
INNER JOIN Person.ContactType ct
ON sc.ContactTypeID = ct.ContactTypeID
WHERE sc.ContactID = @ContactID)
THEN (SELECT ct.Name
FROM Sales.StoreContact sc
INNER JOIN Person.ContactType ct
ON sc.ContactTypeID = ct.ContactTypeID
WHERE ContactID = @ContactID)
ELSE NULL
END;
SET @ContactType =
CASE
-- Check for employee
WHEN EXISTS(SELECT * FROM HumanResources.Employee e
WHERE e.ContactID = @ContactID)
THEN 'Employee'
-- Check for vendor
WHEN EXISTS(SELECT * FROM Purchasing.VendorContact vc
INNER JOIN Person.ContactType ct
ON vc.ContactTypeID = ct.ContactTypeID
WHERE vc.ContactID = @ContactID)
THEN 'Vendor Contact'
-- Check for store
WHEN EXISTS(SELECT * FROM Sales.StoreContact sc
INNER JOIN Person.ContactType ct
ON sc.ContactTypeID = ct.ContactTypeID
WHERE sc.ContactID = @ContactID)
THEN 'Store Contact'
-- Check for individual consumer
WHEN EXISTS(SELECT * FROM Sales.Individual i
WHERE i.ContactID = @ContactID)
THEN 'Consumer'
END;
-- Return the information to the caller
IF @ContactID IS NOT NULL
BEGIN
INSERT @retContactInformation
SELECT @ContactID, @FirstName, @LastName, @JobTitle, @ContactType;
END;
RETURN;
END;
GO
----------------------------------------------------------------------
I executed it in my SQL Server Management Studio Express and I got: Commands completed successfully. I do not know where the result is and how to get the result viewed. Please help and advise.
Thanks in advance,
Scott Chang
HI,
I ran a select * from customers where state ='va', this is the result...
(29 row(s) affected)
The following file has been saved successfully:
C:outputcustomers.rpt 10826 bytes
I choose Query select to a file
then when I tried to open the customer.rpt from the c drive I got this error message. I am not sure why this happend
invalid TLV record
Thanks for your help
Ali
As the topic suggests I need the end results to show a list of shows and their dates ordered by date DESC.
Tables I have are structured as follows:
SHOWS
showID
showTitle
SHOWACCESS
showID
remoteID
VIDEOS
videoDate
showID
SQL is as follows:
SELECT shows.showID AS showID, shows.showTitle AS showTitle,
(SELECT MAX(videos.videoFilmDate) AS vidDate FROM videos WHERE videos.showID = shows.showID)
FROM shows, showAccess
WHERE shows.showID = showAccess.showID
AND showAccess.remoteID=21
ORDER BY vidDate DESC;
I had it ordering by showTitle and it worked fine, but I need it to order by vidDate.
Can anyone shed some light on where I am going wrong?
thanks
I am trying to code a WHERE xxxx IN ('aaa','bbb','ccc') requirement but it the return values for the IN keyword changes according to another column, thus the need for a CASE function.
WHERE GROUP.GROUP_ID = 2 AND DEPT.DEPT_ID = 'D' AND WORK_TYPE_ID IN ( CASE DEPT_ID WHEN 'D' THEN 'A','B','C' <---- ERROR WHEN 'F' THEN 'C','D ELSE 'A','B','C','D' END )
I kept on getting errors, like
Msg 156, Level 15, State 1, Line 44Incorrect syntax near the keyword 'WHERE'.
which leads me to assume that the CASE ... WHEN ... THEN statement does not allow mutiple values for result expression. Is there a way to get the SQL above to work or code the same logic in a different manner in just one simple SQL, and not a procedure or T-SQL script.
I'm using a subquery to return a delivery charge line as a column in the result set. I want to see this delivery charge only on the first line of the results for each contract. Code and results are below.
declare @start smalldatetime
declare @end smalldatetime
set @start = '2015-03-22 00:00' -- this should be a Sunday
set @end = '2015-03-28 23:59' -- this should be the following Saturday
select di.dticket [Contract], di.ddate [Delivered], di.item [Fleet_No], di.descr [Description], dd.min_chg [Delivery_Chg], dd.last_invc_date [Delivery_Invoiced],
[code]....
In this example, I only want to see the delivery charge of 125.00 for the first line of contract HU004377. For simplicity I have only shown the lines for 1 contract here, but there would normally be many different contracts with varying numbers of lines, and I only want to see the delivery charge once for each contract.
help strange result whan i do this
Code Snippet
SELECT unit_date, unit, ISNULL(NULLIF ((unit + DATEDIFF(mm, GETDATE(), unit_date)) % 4, 0), 4) AS new_unit
FROM dbo.empList
i try to get next unit value to next month
why i get this -1
on date
01/01/2008
1
-1
unit_date unit new_unit
01/02/2008
2
1
01/02/2008
1
4
01/01/2008
1
-1
01/02/2008
1
4
21/01/2008
1
-1
21/01/2008
1
-1
01/02/2008
1
4
TNX
How can I efficiently retrieve the top x managers within the top y regions within the top z states within the top q countries?
The only way I have been able to do this is to first find the top q countries, and store the list in an IN clause. Then for each of those, find the top z states and create another IN clause that contains the country+state concatenated. Then for each of those, find the top y regions and concatenate country+state+region. Then finally find the top x managers within this IN clause.
This works fine for a few hundred records, but once it reaches the thousands, it takes much too long. The final IN clause contains thousands of entries.
Isn't there a simpler way to approach this, especially with SQL Server 2005?
i am using a stored procedure, lets say spTemp, that calls sp_executesql within it. in the sp_executesql procedure i am passing parameters from the stored procedure 'spTemp'. i want to retrieve the result of the sp_executesql statement so as to perform further calculations in spTemp. is there a way of doing this?
ex:
create procedure spTemp
(
@abc int
)
as
declare @temp int
exec sp_executesql 'select @temp = Id from Product where @abc > 10'
...
how to get the value @temp from this statement?
I am now retrieving the PDF from the database and I am getting an error:
Error 1 'GetImages.GetImage(int)': not all code paths return a value
I have:
int imageid = Convert.ToInt32(Request.QueryString["ACTUAL_IMAGE_PDF"]);
And...
private SqlDataReader GetImage(int imageid)
{
Sql Statement...
}
Could someone help please??
Hi
I've got a module that contains the following function.
Imports System.Data.SqlClient
Module SQL_Sprocs
Function ListUsers()
Dim conn As New SqlConnection(System.Configuration.ConfigurationSettings.AppSettings("DBConn"))
Dim cmd As SqlCommand = New SqlCommand("list_users", conn)
cmd.CommandType = CommandType.StoredProcedure
conn.Open()
Dim dr As SqlDataReader
dr = cmd.ExecuteReader
ListUsers = dr
dr.Close()
conn.Close()
End Function
End Module
I then want to call this function from my webform. So I'm using the following
Dim dr As SqlClient.SqlDataReader
dr = Timetracker.SQLProcs.ListUsers()
Do While dr.Read
Label1.Text &= dr("first_name") & " " & dr("last_name") & ", "
Loop
dr.Close()
But it's not working. I want to have a module that contains all my sprocs and be able to call them from the individual webpages.
What am I doing wrong?
Lbob
Hi, I have a Stored procedure doind an INSERT which then returns @@Identity.
I have set this parameters direction to output, however, when i run it I get an error saying procedure is expecting this output parameter..
Not sure where I am going wrong...
Can someone please help with retrieving the ID after an insert. What is the correct code in .NET?
Many Thanks
I have records in a table and 1 column is in the smalldatetime format which stores the date in the format "2004-09-22",2004-09-20",2004-09-12",2004-08-04" etc etc.
Can anyone tell me how to craft an SQL statement so that i can retrieve records for a certain month.For example,if i want to retrieve records for the month of September,i would get "2004-09-22",2004-09-20",2004-09-12" in results.
i have a table in MS SQL Server,i need to show two results at a time,and on click of a button nxt two results have to b shown,how do i accomplish this (i mean retrieving the results two at a time)thanx in advance
View 1 Replies View RelatedFaculty member writes:
"I meant to delete just one assignment, doing which was giving me difficulty.
I deleted a whole category by accident which had most of my daily grades in it for a course with quite a few of them. I was negligent in backing them up, so I cannot restore them. I have an XLS file from the midterm, but am missing about 6 grades after that.
Is there any way to recover the grades I had in the deleted category. It has been a couple of days since I entered any new grades. HELP!"
My current backup strategy is to do a full backup 5 pm, differentials every 2 hours, logs every 30 min, all so they arenot simultaneous. Backing these all to same backup device via three different jobs.
Then the server is backed up to tape shortly after the 5 pm full backup.
Obviously, I can't restore from the backup for this situation because it would hurt other data.
But - is there a way I can take last night's backup from tape and restore it to a different database than our production database? (Such a database doesn't at this time exist. Would I detach, copy over the files, and then reattach on prod and attach on the devl side, and then restore from the backup device to the devl copy?)
I've never had to perform this kind of rescue and am wondering if my backup strategy is flawed since it isn't immediately evident how I can easily do this.
I needed a similar thing from our Oracle DBA yesterday, and he went to tape, copied out a table and put it on the Oracle database under a different owner, and I easily fixed the few records that I had botched.
That's exactly what I need to do now with MS SQL 2000.
As the faculty dude said, "HELP!"
And Thanks.
Hi,
I was hoping someone would be able to help me, I trying to go through several databases, 111 to be exact, and get the data out of a particular table which is present in all the databases on the same server.
I know how to get the names of the databases from the INFORMATION_SCHEMA, but how can use the name for it to cycle through all the databases and get data out of the one particular table.
Hi,
I have a giant SQL query that retrieves a bunch of information from a couple of tables for use on a page, and I would like some help on constructing the SQL to get exactly what I have in mind. I have a table - called scContacts - that contains a list of contacts with detailed information. The contacts in the table are regular sales contacts, sales reps, and sales managers. Another table - called scCompany - contains a list of companies with detailed information.
For each company, we have a certain sales manager (or user) pertaining to that company as well as potentially a certain rep. The problem is that the contact tied to the company, the sales manager tied to the company, and the rep tied to the company all come from the same table. Here is the base SQL code I've used to get everything but the sales rep's name and sales manager's name:
----- SQL CODE -----
SELECT DISTINCT
scContacts.ID,
scContacts.inheritCoAddr,
scContacts.fName,
scContacts.lName,
scContacts.contact,
scContacts.billToAddress1,
scContacts.billToAddress2,
scContacts.billToState,
scContacts.billToZip,
scContacts.billToCity,
scContacts.billToCounty,
scContacts.billToCountry,
scCompany.ID AS companyID,
scCompany.companyName,
scCompany.companyURL,
scCompany.billToAddress1 AS companyAddress1,
scCompany.billToAddress2 AS companyAddress2,
scCompany.billToCity AS companyCity,
scCompany.billToState AS companyState,
scCompany.billToZip AS companyZip,
scCompany.billToCounty AS companyCounty,
scCompany.billToCountry AS companyCountry,
scCompany.businessType,
scCompany.phoneExt,
scCompany.phoneNum,
scCompany.faxNum,
scCompany.minEmployees,
scCompany.maxEmployees,
scCompany.actionTypeMAX,
scCompany.actionDateMAX,
scCompany.actionTimeMAX,
scCompany.statusID,
scCompany.userID,
scCompany.repID
FROM
scCompany,
scContacts
INNER JOIN
scStatus ON
scStatus.ID = scCompany.statusID
WHERE
scgroupContacts.contactID = [insert cookie value]
AND
scgroups.ID = [insert cookie value]
AND
scCompany.ID = scContacts.companyID
AND
scCompany.groupID = scgroups.ID
----- END SQL CODE -----
As indicated right now, this SQL code will retrieve all of the contact and company information for a certain contact ID which comes from a cookie value (inserted in ASP). I want to get the [fName] and [lName] fields from scContacts table where the scContacts.ID = scCompany.userID, and I also want those same fields from scContacts table again where the scContacts.ID = scCompany.repID. It would be simplest and most efficient if I could do this all at once (and I'm sure it's possible). How would I change the SQL to bring in that information from the same table two more times, tying their ID's to ID's in the company table?
thanks,
mellamokb
bobby writes "I have a Table from which i get the ID of customers(Customers are people who have written an online exam).The date of completion of the exams are stored in the corresponding table with the name of the exam.There are more than one exams and the names of the exams are stored in an other table.Now my question is how to get the date of cpletion with the given Id from the first table?"
View 2 Replies View RelatedHi, I need some help. I have this query where i need to pull up students that have more than or equal to 3 absences in a row. Now I am getting all those students that are absent but not in a row. But i was wondering if there is a way to tell if a student was absent three days in a row . There is a date field that is being used to identify the day of the class and a status field that identifies if the student was absent or present. Please help someone.
Birju
i lost a table with lots of data - there's around 10,000 records inserted daily.
my problem was i only realized this morning (and i lost it last night) and i have the backups backing up each day every hour - so the backup had already overwritten it seems the db that was missing the table)
my backup type is set to append - so i though i could retrieve by date time but it only let me retrieve the backup at 11pm(tune if last backup) and no earlier time. is there anyway of getting the data from the 7 pm backup -- again it backsup each hour to the same file - set to append so i thought that meant i could choose a time but it doesn't seem to be working.
please advise.
insert into newTABLE(newCOLUMN)
Select
Case When [Column 11] like '%DOB%' Then
SubString( [Column 11],
CharIndex('DOB',[Column 11],1)+3,
Case When CharIndex(';',[Column 11],1)= 0 Then
CharIndex('.',[Column 11],1) Else CharIndex(';',[Column 11],1)
End-(CharIndex('DOB',[Column 11],1)+3)) Else '' End,[column 11]
from table
Following is da example of return result
through the image, we can found that some of them got ddmmyy and some got only year.Currently, i want to insert those record to newtable newcolumn with only those got propal date(unwanted for only year).What should i do following?
Hi AllBit of a situation so hopefully someone can advise.I've a client who has a sql 2000 database that *unfortunately* hasn'thad a backup procedure in place. Its been running for just over a yearand on Monday it got, well, screwed. They have a 50 gig ldf file.Yes, 50 gig. Is it possible to put in place a database maintenanceplan that will allow me to roll back to, say, last friday just from theldf file?Thoughts? Any advice would be welcome.MTIAMark
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