Better Performace With Query

Mar 15, 2007

its k i got it :)

Fulltext Large (500.000) Count Query Performace Too Slow

Feb 14, 2008

Hi,

I am with the response time for a simple count on a fulltext search that is too slow.

Even using the most simple query on a good server (64 bit Dual Opteron 4GB Ram with high speed 16 raid disk storage)):

select count(*) from content_books where contains(searchData,'"english"')
Takes 4 seconds to count the avg 500.000 resultsI have removed all the joins with real table data so that the query is only inside the fulltext engine..

I would expect this to be down to 4 milli seconds. Isn't it just getting the size of the "english" word result index?

It seems the engine is going through all the results because if a do a more complex search that returns less results the performance is better.

Any clues of how to do this faster? I never read the thousands of records BUT i need to count them...

Thank you very much.

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Why The Performace Differs?

Aug 30, 2005

All,I have a problem regarding SQL Server 2000 SP3,I have SP that calls other SP and it inserts about 30,000 records as atime,in the development environment (MS Windows 2003 Enterprise, 256 RAM,3.0 GHz Intel Processor) takes about 6 seconds to run this SP.But, with the same Software but, 2.6 GHz Intel and 1 GB Ram, it runsvery slow it takes more than 135 Seconds to run,I have read a lot of articles about expanding the SQL Memory and giveit a higher process privilege but, with no use,I don't know where the problem is, do you have any idea about what isthe problem?Thank you in advance,MAG

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JOIN Performace Vs. Multiple RersultSets

Jun 13, 2006

Can anyone give me some guidelines as to when to chose JOINS over returning multiple resultsets in a strored procedure..
For eample, I have two tables, Orders and OrderDetails, which are linked by a primary key field. There can be orders w/o a corresponding record in orderdetails.
1.) I can return all orders and their details using a stored preocedure that has:
   SELECT o.order_id as OrderId, o.customername, od.order_id, od.orderdate FROM orders AS o LEFT OUTER JOIN orderdetails AS od ON (o.order_id=od.order_id)
2.) I can do the same by returning two results sets in a different stored procedure:
   SELECT order_id, customername FROM orders
   SELECT order_id, orderdate FROM orderdetails
I think the client processing time for the second option will be slightly less, because the resultset I need to filter will only be as big as the orederdetails table (it will not include records for orders that have no details). Regardless, I think this would only make for a small performance gain, so if Option 1 is better in Database performace, I would probably go with that.
I assume the method to choose also depends on table size and # of JOINS. Any guidance would be appreciated. Thanks,
Al

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Openquery Potential Performace Blackhole?

Jun 19, 2001

I have a openquery query like this
Select * from openquery([db2],'Select * from tableA')

To only return and process records for a given date range I changed it to be something like this

Select * from openquery([db2],'Select * from tableA')
where datefield > '06/06/2001'

While this works fine, my question is that does it copy all the records from the db2 server to the sql server before filtering them. I think it does.
The db2 table will have over 1,000,000 records eventually, and the sql server will use records for a given day/date range only.

I cannot add the where clause to the db2 query.

any ideas ?

tia.

neil.

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Frustration.. Slow Performace When Editing A DTS

Apr 17, 2006

I have tried many things and even the worst case thing which I was trying to avoid i.e. uninstalled MSDE SP3 and Analysis Services and service packs but the problem is still not solved...

Whenever I open a DTS in design view and double click on the link (the line connecting the two) between the source and destination servers the PC goes to sleep and comes back after a long time and then the same problem occurs when I press on the transformation tab...

I know this may sound weird but that really is the case :o

Any clues anyone .... please

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Frustration.. Slow Performace When Editing A DTS

Apr 17, 2006

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Performace Issue With SQL Native Client

Jun 4, 2008

and TCP as a connection method.

When using Named Pipes the issue is no longer there.

On massive batch inserts we sometimes get a long pause at the end of one insert and before begining the next one. Example:

1000 inserts in the same table and then repeat. This will work fine for 3 or 4 iterations, then pause during the 5th iteration for up to 40 seconds and then simply continue.

When this exact same procedure is done using Named Pipes as the connection method this never happens.

While this is happening neither the server or the workstation is doing anything, 0% CPU, 0% network, it just sits there.

All this using the SQL Native Client 2005 and ADO.

Anyone have any ideas?

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Unable To Get The Performace With Partition Table

Jan 11, 2007

I created two tables one is based on partition structure and one is non-partition structure.

File Groups= Jan,Feb.....Dec
Partition Functions='20060101','20060201'......'20061201'
I am using RIGHT Range in Partition function.
Then I defined partition scheme on partition function.

I have more than 7,00,000 data in my database.
I checked filegroups and count rows. It works fine.

But When I check the estimation plan time out for query it is same for both partition table and non partition table.

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Mdac 2.8 And Sql 2005 Cursor Performace Issue

Jun 18, 2007

HelloI have a VB6 application using classic ado (MDAC 2.8) for connectingms sql 2000 server. Application uses a lot of server side cursors. NowI want to switch to ms sql 2005 server but I have noticed very seriousperformance problem. Sql profiler results of execution of followingcommands:declare @p1 intset @p1=180150131declare @p3 intset @p3=1declare @p4 intset @p4=16388declare @p5 intset @p5=22221exec sp_cursoropen @p1 output,N' Select ... from ... where .... orderby ...',@p3 output,@p4 output,@p5 outputselect @p1, @p3, @p4, @p5on sql server 2000:CPU: 234Reads:82515Writes:136Duration:296and on sql server 2005:CPU: 4703Reads:678751Writes:1Duration:4867Both databases are identical, the servers runs on the same machine(Pentium 2,8 Ghz, 2 GB RAM) with only one client connected. On forumsI've read that Microsoft doesn't recommend using server side cursorson sql 2005 but is there any way to increase performance to someacceptable level?thanks in advanceszymon strus

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Key Factors For Efficiency Of SQL Server 2000 (performace Tuning)

Apr 18, 2007

Hello All,

I am new to SQL Server 2000. I am eager to learn what factors/parameters are key for obtaining good retrieval performance of SQL Server 2000 (prompt response to user query).

I recall that someone told me that a recordset with asOpenStatic cursor type has higher speed than that of a recordset with other cursor types.

Is this true or false. Are there really some key parameters for perfomance tuning .

Thanks

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Mdac 2.8 And Sql 2005 Server Side Cursor Performace Issue

Jun 18, 2007

Hello

I have a VB6 application using classic ado (MDAC 2.8) for connecting ms sql 2000 server. Application uses a lot of server side cursors. Now I want to switch to ms sql 2005 server but I have noticed very serious performance problem. Sql profiler results of execution of following commands:

declare @p1 int
set @p1=180150131
declare @p3 int
set @p3=1
declare @p4 int
set @p4=16388
declare @p5 int
set @p5=22221
exec sp_cursoropen @p1 output,N' Select ... from ... where .... order by ...',@p3 output,@p4 output,@p5 output
select @p1, @p3, @p4, @p5

on sql server 2000:

CPU: 234
Reads: 82515
Writes: 136
Duration: 296

and on sql server 2005:

CPU: 4703
Reads: 678751
Writes: 1
Duration: 4867

Both databases are identical, the servers runs on the same machine (Pentium 2,8 Ghz, 2 GB RAM) with only one client connected. On forums I've read that Microsoft doesn't recommend using server side cursors on sql 2005 but is there any way to increase performance to some acceptable level?

thanks in advance

szymon strus

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Query Runs Fine In Query Analyser But Not The Query Debugger

Dec 19, 2003

I'm running a query, actually its an insert that works when using the TSQL below.

However when I try to use the debugger to step through and using the exact same values as those below I get the following error:

[Microsoft][ODBC SQL Server Driver]Invalid character value for cast specification

Its Killing me because everything else works, but this. Can somebody help.

DECLARE @NoteID INT,-- NULL OUTPUT,
@Note_Description NVARCHAR(3000),-- = NULL,
@Date DateTime,-- = NULL OUTPUT,
@ByWho NVARCHAR(30),-- = NULL,
@FK_Action_Performed NVARCHAR(40),-- = NULL,
@FK_UserID INT,-- = NULL,
@FK_JobID INT,-- = NULL,
@Job_Date DateTime,-- = NULL,
@Start DateTime,-- = NULL,
@Finish DateTime,-- = NULL,

@BeenRead NVARCHAR(10),-- = NULL

@FK_UserIDList NVARCHAR(4000)-- = NULL

--SET @NoteID = 409 --NULL OUTPUT,
SET @Note_Description = 'Tetsing'
--SET @Date DateTime = NULL OUTPUT,
SET @ByWho = 'GeorgeAgaian'
SET @FK_Action_Performed = 'Worked hard'
SET @FK_UserID = 5
SET @FK_JobID = 29
SET @Job_Date = 28/01/03
SET @Start = '1:00:20 PM'
SET @Finish = '1:00:20 PM'
SET @BeenRead = 'UnRead'

SET @FK_UserIDList = '1,2,3'

--AS

--SET NOCOUNT ON

SET NOCOUNT ON

SET XACT_ABORT ON

BEGIN TRANSACTION

SET @Date = GETDATE()

-- Insert Values into the customer table
INSERT Note (Note_Description,
Date,
ByWho,
FK_Action_Performed,
FK_UserID,
FK_JobID,
Job_Date,
Start,
Finish)

SELECT --@NoteID,
@Note_Description,
@Date,
@ByWho,
@FK_Action_Performed,
@FK_UserID,
@FK_JobID,

@Job_Date,
@Start,
@Finish

-- Get the new Customer Identifier, return as OUTPUT param
SELECT @NoteID = @@IDENTITY

-- Insert new notes for all the users that the note pertains to, in this case this will be by the assigned
-- users.
IF @FK_UserIDList IS NOT NULL
EXECUTE spInsertNotesByAssignedUsers @NoteID, @FK_UserIDList

-- Insert New Address record
-- Retrieve Address reference into @AddressId
-- EXEC spInsertForUserNote
-- @FK_UserID,
--@NoteID,
-- @BeenRead
-- @Fax,
-- @PKId,
-- @AddressId OUTPUT

COMMIT TRANSACTION

--------------------------------------------------
GO

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Query Diff Results From Ent Manager Query And Query Analizer

May 28, 2008

ok can someone tell me why i get two different answers for the same query. (looking for last day of month for a given date)

SELECT DATEADD(ms, - 3, DATEADD(mm, DATEDIFF(m, 0, CAST('12/20/2006' AS datetime)) + 1, 0)) AS Expr1
FROM testsupplierSCNCR
I am getting the result of 01/01/2007

but in query analizer I get the result of

12/31/2006

Why the different dates

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[Query] - Query Designer Encountered A Query Error:Unspecified Error

Jan 22, 2001

Hi,

I get this error dialog when I try to open all the rows of any table from Enterprise manager..

Any help would be really appreciated..

Thanks,
-Srini.

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Error: 8624 Internal Query Processor Error: The Query Processor Could Not Produce A Query Plan.

May 24, 2007

SQL Server 2005 9.0.3161 on Win 2k3 R2

I receive the following error:

"Error: 8624, Severity: 16, State: 1 Internal Query Processor Error: The query processor could not produce a query plan. For more information, contact Customer Support Services."

I have traced this to an insert statement that executes as part of a stored procedure.

INSERT INTO ledger (journal__id, account__id,account_recv_info__id,amount)

VALUES (@journal_id, @acct_id, @acct_recv_id, @amount)

There is also an auto-increment column called id. There are FK contraints on all of the columns ending in "__id". I have found that if I remove the contraint on account__id the procedure will execute without error. None of the other constraints seem to make a difference. Of course I don't want to remove this key because it is important to the database integrity and should not be causing problems, but apparently it confuses the optimizer.

Also, the strange thing is that I can get the procedure to execute without error when I run it directly through management studio, but I receive the error when executing from .NET code or anything using ODBC (Access).

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Query Works In 'test Query' But Refuses To Show Up In The Datagrid On A Web Page - Urgent!

Mar 28, 2007

Hey, i've written a query to search a database dependant on variables chosen by user etc etc. Opened up a new sqldatasource, entered the query shown below and went on to the test query page. Entered some test variables, everything works as it should do. Try to get it to show in a datagrid on a webpage - nothing. No data shows.
SELECT dbo.DERIVATIVES.DERIVATIVE_ID, count(*) AS Matches
FROM dbo.MAKES INNER JOIN
dbo.MODELS ON dbo.MAKES.MAKE_ID = dbo.MODELS.MAKE_ID INNER JOIN
dbo.DERIVATIVES ON dbo.MODELS.MODEL_ID = dbo.DERIVATIVES.MODEL_ID INNER JOIN
dbo.[VALUES] ON dbo.DERIVATIVES.DERIVATIVE_ID = dbo.[VALUES].DERIVATIVE_ID INNER JOIN
dbo.ATTRIBUTES ON dbo.[VALUES].ATTRIBUTE_ID = dbo.ATTRIBUTES.ATTRIBUTE_ID
WHERE ((ATTRIBUTES.ATTRIBUTE_ID = @ATT_ID1 and (@VAL1 is null or VALUE = @VAL1)) or
(ATTRIBUTES.ATTRIBUTE_ID = @ATT_ID2 and (@VAL2 is null or VALUE = @VAL2)) or
(ATTRIBUTES.ATTRIBUTE_ID = @ATT_ID3 and (@VAL3 is null or VALUE = @VAL3)) or
(ATTRIBUTES.ATTRIBUTE_ID = @ATT_ID4 and (@VAL4 is null or VALUE = @VAL4)) )
GROUP BY dbo.DERIVATIVES.DERIVATIVE_ID
HAVING count(*) >= CASE WHEN @VAL1 IS NOT NULL THEN 1 ELSE 0 END +
CASE WHEN @VAL2 IS NOT NULL THEN 1 ELSE 0 END +
CASE WHEN @VAL3 IS NOT NULL THEN 1 ELSE 0 END +
CASE WHEN @VAL4 IS NOT NULL THEN 1 ELSE 0 END -2
ORDER BY count(*) DESC

Here is the page source

<%@ Page Language="VB" MasterPageFile="~/MasterPage.master" Title="Untitled Page" %>
<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
<asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:DevConnectionString1 %>"
SelectCommand="	SELECT dbo.DERIVATIVES.DERIVATIVE_ID, count(*) AS Matches
	FROM dbo.MAKES INNER JOIN
				 dbo.MODELS ON dbo.MAKES.MAKE_ID = dbo.MODELS.MAKE_ID INNER JOIN
				 dbo.DERIVATIVES ON dbo.MODELS.MODEL_ID = dbo.DERIVATIVES.MODEL_ID INNER JOIN
				 dbo.[VALUES] ON dbo.DERIVATIVES.DERIVATIVE_ID = dbo.[VALUES].DERIVATIVE_ID INNER JOIN
				 dbo.ATTRIBUTES ON dbo.[VALUES].ATTRIBUTE_ID = dbo.ATTRIBUTES.ATTRIBUTE_ID
	WHERE ((ATTRIBUTES.ATTRIBUTE_ID = @ATT_ID1 and (@VAL1 is null or VALUE = @VAL1)) or
		 (ATTRIBUTES.ATTRIBUTE_ID = @ATT_ID2 and (@VAL2 is null or VALUE = @VAL2)) or
		 (ATTRIBUTES.ATTRIBUTE_ID = @ATT_ID3 and (@VAL3 is null or VALUE = @VAL3)) or
		 (ATTRIBUTES.ATTRIBUTE_ID = @ATT_ID4 and (@VAL4 is null or VALUE = @VAL4)) )
	GROUP BY dbo.DERIVATIVES.DERIVATIVE_ID
	HAVING count(*) >= CASE WHEN @VAL1 IS NOT NULL THEN 1 ELSE 0 END +
									 CASE WHEN @VAL2 IS NOT NULL THEN 1 ELSE 0 END +
									 CASE WHEN @VAL3 IS NOT NULL THEN 1 ELSE 0 END +
									 CASE WHEN @VAL4 IS NOT NULL THEN 1 ELSE 0 END -2
	ORDER BY count(*) DESC
">
<SelectParameters>
<asp:ControlParameter ControlID="DropDownList1" Name="ATT_ID1" PropertyName="SelectedValue" />
<asp:ControlParameter ControlID="TextBox1" Name="VAL1" PropertyName="Text" />
<asp:Parameter Name="ATT_ID2" />
<asp:Parameter Name="VAL2" />
<asp:Parameter Name="ATT_ID3" />
<asp:Parameter Name="VAL3" />
<asp:Parameter Name="ATT_ID4" />
<asp:Parameter Name="VAL4" />
</SelectParameters>
</asp:SqlDataSource>
<asp:SqlDataSource ID="SqlDataSource2" runat="server" ConnectionString="<%$ ConnectionStrings:DevConnectionString1 %>"
SelectCommand="SELECT * FROM [ATTRIBUTES]"></asp:SqlDataSource>
<br />
<asp:DropDownList ID="DropDownList1" runat="server" DataSourceID="SqlDataSource2"
DataTextField="ATTRIBUTE_NAME" DataValueField="ATTRIBUTE_ID">
</asp:DropDownList>
<asp:TextBox ID="TextBox1" runat="server" AutoPostBack="True"></asp:TextBox><br />
<br />
<br />
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataKeyNames="DERIVATIVE_ID"
DataSourceID="SqlDataSource1">
<Columns>
<asp:BoundField DataField="DERIVATIVE_ID" HeaderText="DERIVATIVE_ID" InsertVisible="False"
ReadOnly="True" SortExpression="DERIVATIVE_ID" />
<asp:BoundField DataField="Matches" HeaderText="Matches" ReadOnly="True" SortExpression="Matches" />
</Columns>
</asp:GridView>
</asp:Content>
AFAIK I have configured the source to pick up the dropdownlist value and the textbox value (the text box is autopostback).
Am i not submitting the data correctly? (It worked with a simple query...just not with this one). I have tried a stored procedure which works when testing just not when its live on a webpage.
Please help!

(Visual Web Devleoper 2005 Express and SQL Server Management Studio Express)

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SQL Server 2012 :: Adding Count To Query Without Duplicating Original Select Query

Aug 5, 2014

I have the following code.

SELECT _bvSerialMasterFull.SerialNumber, _bvSerialMasterFull.SNStockLink, _bvSerialMasterFull.SNDateLMove, _bvSerialMasterFull.CurrentLoc,
_bvSerialMasterFull.CurrentAccLink, _bvSerialMasterFull.StockCode, _bvSerialMasterFull.CurrentAccount, _bvSerialMasterFull.CurrentLocationDesc,
_bvSerialNumbersFull.SNTxDate, _bvSerialNumbersFull.SNTxReference, _bvSerialNumbersFull.SNTrCodeID, _bvSerialNumbersFull.SNTransType,
_bvSerialNumbersFull.SNWarehouseID, _bvSerialNumbersFull.TransAccount, _bvSerialNumbersFull.TransTypeDesc,

[code]...

However, as you can see, the original select query is run twice and joined together.What I was hoping for is this to be done in the original query without the need to duplicate the original query.

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Opening Up Odbc Data Source In The Query Query Inside Of The Server Manager

Jun 15, 2007

I'm trying to find the command to open up an odbc conection inside sql2005 express. I only have ues of an odbc connector, we're conection to remedy. We will eventually be using stored procedures to extract the data we need from remedy and doing additional data crunching. I'm a foxpro programmer so once I get the correct syntax for making the odbc connector I shold be ok. Also I need a really good advanced book on sql2005. The type of book that would have my odbc answer. I've spent all morning trying to find this information and was unable to.

Thanks in advance

Daniel Buchanan.

If this was the wrong forum to post this on, please move this question to the correct one. I need this answer soon.

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Master Data Services :: Error - Query Processor Could Not Produce A Query Plan

Jul 19, 2015

We have a issue with a MDS server that have been over us for a couple of days, the original error msg from SQL Server Engine is the one "The query processor could not produce a query plan" but the ones we get on the Excel-Addin are "Sequece contains no elements" or "The value cannot be null" T

• Using Microsoft SQL Server 2012 (SP1) - 11.0.3393.0 (X64) for 6months on this server without issues

• Two weeks ago we started to have 2 errors: "Sequence Contains No Elements" | "The Value Cannot Be Null"

• We are using the last version of Excel Add-in

• We try to reinstall the MDS feature

• If I backup/restore MDS database to other server it works

• We updated to SQL 2012 SP2 + CU4 but the error persisted ...

Looking at the MDSTraceLog we are routed to the this msg

SQL Error Debug Info: Number: 8624, Message: Internal Query Processor Error: The query processor could not produce a query plan. For more information, contact Customer Support Services., Server: bbdvsql03inst01, Proc: udpMetadataEntityGetDetailsXML, Line: 28

At line 28 udpMetadataEntityGetDetailsXML is calling udfMetadataEntityGetDetailsXML … and here is where we stopped

** Error found when try to get data from a entity using Excel add-in **
===================================
Sequence contains no elements
------------------------------
Program Location:
at Microsoft.MasterDataServices.AsyncEssentials.AsyncResultBase.EndInvoke()
at Microsoft.MasterDataServices.ExcelAddInCore.AsyncProviderBase`1.EndOperation(IAsyncResult ar)

[code]....

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SQL Server 2012 :: How To Pull Value Of Query And Not Value Of Variable When Query Using Select Top 1 Value From Table

Jun 26, 2015

how do I get the variables in the cursor, set statement, to NOT update the temp table with the value of the variable ? I want it to pull a date, not the column name stored in the variable...

create table #temptable (columname varchar(150), columnheader varchar(150), earliestdate varchar(120), mostrecentdate varchar(120))
insert into #temptable
SELECT ColumnName, headername, '', '' FROM eddsdbo.[ArtifactViewField] WHERE ItemListType = 'DateTime' AND ArtifactTypeID = 10
--column name
declare @cname varchar(30)

[code]...

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Query Fails With Invalid Column Name But Succeed As Sub-query With Unexpected Results

Sep 22, 2015

-- The 3rd query uses an incorrect column name in a sub-query and succeeds but rows are incorrectly qualified. This is very DANGEROUS!!!
-- The issue exists is in 2008 R2, 2012 and 2014 and is "By Design"

set nocount on
go
if object_id('tempdb.dbo.#t1') IS NOT NULL drop table #t1
if object_id('tempdb.dbo

[code]....

This succeeds when the invalid column name is a valid column name in the outer query. So in this situation the sub-query would fail when run by itself but succeed with an incorrectly applied filter when run as a sub-query. The danger here is that if a SQL Server user runs DML in a production database with such a sub-query which then the results are likely not the expected results with potentially unintended actions applied against the data. how many SQL Server users have had incorrectly applied DML or incorrect query results and don't even know it....?

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Why The Query Works In Query Analyser And Doesn't Work In Reporting Service ?

Apr 30, 2007

Hello everybody,

I'm developing a report using the following structure :

declare @sql as nvarchar(4000)

declare @where as nvarchar(2000)

set @sql = 'select ....'

If <conditional1>

begin

set @where = 'some where'

end

If <conditional2>

begin

set @where = 'some where'

end

set @sql = @sql + @where

exec(@sql)

I run it in query analyser and works fine, but when I try to run in Reporting Services, Visual studio stops responding and the cpu reaches 100 %.

I realize that when I cut off the if clauses, then it works at Reporting services.

Does anybody know what is happening?

Why the query works in query analyser and doesn't work in Reporting Service ?

Thanks,

Maurício

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DB Engine :: Multiple Execution Of Query Pattern Generates Same Query Plan

Oct 6, 2015

SQL Server 2012 Performance Dashboard Main advices me this:

Since the application is from a vendor and I have no control over its code, how can improve this sitation?

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Transact SQL :: Adding Results Of Query To Another Query Via Dynamically Added Columns

Jul 30, 2015

For each customer, I want to add all of their telephone numbers to a different column. That is, multiple columns (depending on the number of telephone numbers) for each customer/row. How can I achieve that?

I want my output to be

CUSTOMER ID, FIRST NAME, LAST NAME, TEL1, TEL2, TEL3, ... etc

Each 'Tel' will relate to a one or more records in the PHONES table that is linked back to the customer.

I want to do it using SELECT. Is it possible?

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Can A Calc'd Query Column Be Compared Against A Multi Value Variable Without A Nested Query?

Nov 15, 2007

do i need to nest a query in RS if i want a calculated column to be compared against a multi value variable? It looks like coding WHERE calcd name in (@variable) violates SQL syntax. My select looked like

SELECT ... ,CASE enddate WHEN null then 1 else 0 END calcd name
FROM...
WHERE ... and calcd name in (@variable)

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SQL Server Admin 2014 :: Estimated Query Plan For A Stored Procedure With Multiple Query Statements

Oct 30, 2015

When viewing an estimated query plan for a stored procedure with multiple query statements, two things stand out to me and I wanted to get confirmation if I'm correct.

1. Under <ParameterList><ColumnReference... does the xml attribute "ParameterCompiledValue" represent the value used when the query plan was generated?

<ParameterList>
<ColumnReference Column="@Measure" ParameterCompiledValue="'all'" />
</ParameterList>
</QueryPlan>
</StmtSimple>

2. Does each query statement that makes up the execution plan for the stored procedure have it's own execution plan? And meaning the stored procedure is made up of multiple query plans that could have been generated at a different time to another part of that stored procedure?

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Stored Procedure Dbo.SalesByCategory Of Northwind Database: Enter The Query String - Query Attempt Failed. How To Do It Right?

Mar 25, 2008

Hi all,
In the Programmability/Stored Procedure of Northwind Database in my SQL Server Management Studio Express (SSMSE), I have the following sql:

USE [Northwind]

GO

/****** Object: StoredProcedure [dbo].[SalesByCategory] Script Date: 03/25/2008 08:31:09 ******/

SET ANSI_NULLS ON

GO

SET QUOTED_IDENTIFIER ON

GO

CREATE PROCEDURE [dbo].[SalesByCategory]

@CategoryName nvarchar(15), @OrdYear nvarchar(4) = '1998'

AS

IF @OrdYear != '1996' AND @OrdYear != '1997' AND @OrdYear != '1998'

BEGIN

SELECT @OrdYear = '1998'

END

SELECT ProductName,

TotalPurchase=ROUND(SUM(CONVERT(decimal(14,2), OD.Quantity * (1-OD.Discount) * OD.UnitPrice)), 0)

FROM [Order Details] OD, Orders O, Products P, Categories C

WHERE OD.OrderID = O.OrderID

AND OD.ProductID = P.ProductID

AND P.CategoryID = C.CategoryID

AND C.CategoryName = @CategoryName

AND SUBSTRING(CONVERT(nvarchar(22), O.OrderDate, 111), 1, 4) = @OrdYear

GROUP BY ProductName

ORDER BY ProductName

////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
From an ADO.NET 2.0 book, I copied the code of ConnectionPoolingForm to my VB 2005 Express. The following is part of the code:

Imports System.Collections.Generic

Imports System.ComponentModel

Imports System.Drawing

Imports System.Text

Imports System.Windows.Forms

Imports System.Data

Imports System.Data.SqlClient

Imports System.Data.Common

Imports System.Diagnostics

Public Class ConnectionPoolingForm

Dim _ProviderFactory As DbProviderFactory = SqlClientFactory.Instance

Public Sub New()

' This call is required by the Windows Form Designer.

InitializeComponent()

' Add any initialization after the InitializeComponent() call.

'Force app to be available for SqlClient perf counting

Using cn As New SqlConnection()

End Using

InitializeMinSize()

InitializePerfCounters()

End Sub

Sub InitializeMinSize()

Me.MinimumSize = Me.Size

End Sub

Dim _SelectedConnection As DbConnection = Nothing

Sub lstConnections_SelectedIndexChanged(ByVal sender As Object, ByVal e As EventArgs) Handles lstConnections.SelectedIndexChanged

_SelectedConnection = DirectCast(lstConnections.SelectedItem, DbConnection)

EnableOrDisableButtons(_SelectedConnection)

End Sub

Sub DisableAllButtons()

btnAdd.Enabled = False

btnOpen.Enabled = False

btnQuery.Enabled = False

btnClose.Enabled = False

btnRemove.Enabled = False

btnClearPool.Enabled = False

btnClearAllPools.Enabled = False

End Sub

Sub EnableOrDisableButtons(ByVal cn As DbConnection)

btnAdd.Enabled = True

If cn Is Nothing Then

btnOpen.Enabled = False

btnQuery.Enabled = False

btnClose.Enabled = False

btnRemove.Enabled = False

btnClearPool.Enabled = False

Else

Dim connectionState As ConnectionState = cn.State

btnOpen.Enabled = (connectionState = connectionState.Closed)

btnQuery.Enabled = (connectionState = connectionState.Open)

btnClose.Enabled = btnQuery.Enabled

btnRemove.Enabled = True

If Not (TryCast(cn, SqlConnection) Is Nothing) Then

btnClearPool.Enabled = True

End If

End If

btnClearAllPools.Enabled = True

End Sub

Sub StartWaitUI()

Me.Cursor = Cursors.WaitCursor

DisableAllButtons()

End Sub

Sub EndWaitUI()

Me.Cursor = Cursors.Default

EnableOrDisableButtons(_SelectedConnection)

End Sub

Sub SetStatus(ByVal NewStatus As String)

RefreshPerfCounters()

Me.statusStrip.Items(0).Text = NewStatus

End Sub

Sub btnConnectionString_Click(ByVal sender As Object, ByVal e As EventArgs) Handles btnConnectionString.Click

Dim strConn As String = txtConnectionString.Text

Dim bldr As DbConnectionStringBuilder = _ProviderFactory.CreateConnectionStringBuilder()

Try

bldr.ConnectionString = strConn

Catch ex As Exception

MessageBox.Show(ex.Message, "Invalid connection string for " + bldr.GetType().Name, MessageBoxButtons.OK, MessageBoxIcon.Error)

Return

End Try

Dim dlg As New ConnectionStringBuilderDialog()

If dlg.EditConnectionString(_ProviderFactory, bldr) = System.Windows.Forms.DialogResult.OK Then

txtConnectionString.Text = dlg.ConnectionString

SetStatus("Ready")

Else

SetStatus("Operation cancelled")

End If

End Sub

Sub btnAdd_Click(ByVal sender As Object, ByVal e As EventArgs) Handles btnAdd.Click

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Dim strErrorMessage As String = ""

Dim strErrorCaption As String = "Connection attempt failed"

StartWaitUI()

Try

Dim cn As DbConnection = _ProviderFactory.CreateConnection()

cn.ConnectionString = txtConnectionString.Text

cn.Open()

lstConnections.SelectedIndex = lstConnections.Items.Add(cn)

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blnError = True

strErrorMessage = ex.Message

End Try

EndWaitUI()

If blnError Then

SetStatus(strErrorCaption)

MessageBox.Show(strErrorMessage, strErrorCaption, MessageBoxButtons.OK, MessageBoxIcon.Error)

Else

SetStatus("Connection opened succesfully")

End If

End Sub

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StartWaitUI()

Try

_SelectedConnection.Open()

EnableOrDisableButtons(_SelectedConnection)

SetStatus("Connection opened succesfully")

EndWaitUI()

Catch ex As Exception

EndWaitUI()

Dim strErrorCaption As String = "Connection attempt failed"

SetStatus(strErrorCaption)

MessageBox.Show(ex.Message, strErrorCaption, MessageBoxButtons.OK, MessageBoxIcon.Error)

End Try

End Sub

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Me.Cursor = Cursors.WaitCursor

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Try

Dim cmd As DbCommand = _SelectedConnection.CreateCommand()

cmd.CommandText = queryDialog.txtQuery.Text

Using rdr As DbDataReader = cmd.ExecuteReader()

If rdr.HasRows Then

Dim resultsForm As New QueryResultsForm()

resultsForm.ShowResults(cmd.CommandText, rdr)

SetStatus(String.Format("Query returned {0} row(s)", resultsForm.RowsReturned))

Else

SetStatus(String.Format("Query affected {0} row(s)", rdr.RecordsAffected))

End If

Me.Cursor = Cursors.Default

EnableOrDisableButtons(_SelectedConnection)

End Using

Catch ex As Exception

Me.Cursor = Cursors.Default

EnableOrDisableButtons(_SelectedConnection)

Dim strErrorCaption As String = "Query attempt failed"

SetStatus(strErrorCaption)

MessageBox.Show(ex.Message, strErrorCaption, MessageBoxButtons.OK, MessageBoxIcon.Error)

End Try

Else

SetStatus("Operation cancelled")

End If

End Sub
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
I executed the code successfully and I got a box which asked for "Enter the query string".
I typed in the following: EXEC dbo.SalesByCategory @Seafood. I got the following box: Query attempt failed. Must declare the scalar variable "@Seafood". I am learning how to enter the string for the "SQL query programed in the subQuery_Click(ByVal sender As Object, ByVal e As EventArgs) Handles btnQuery.Click" (see the code statements listed above). Please help and tell me what I missed and what I should put into the query string to get the information of the "Seafood" category out.

Thanks in advance,
Scott Chang

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