Paging Query Without Using Stored Procedure
Dec 1, 2006
Hello, my table is clustered according to the date. Has anyone found an efficient way to page through 16 million rows of data? The query that I have takes waaaay too long. It is really fast when I page through information at the beginning but when someone tries to access the 9,000th page sometimes it has a timeout error. I am using sql server 2005 let me know if you have any ideas. Thanks
I am also thinking about switch datavase software to something that can handle that many rows. Let me know if you have a suggestion on a particular software that can handle paging through 16 million rows of data.
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Aug 29, 2007
However it is not saving in visual srudio 2005. it is saying 'ambiguous column name ID' does anyone know why?CREATE PROCEDURE PagedResults_New
(@startRowIndex int,
@maximumRows int
)
AS
--Create a table variable
DECLARE @TempItems TABLE
(ID int IDENTITY,
ShortListId int
)
-- Insert the rows from tblItems into the temp. table
INSERT INTO @TempItems (ShortListId)
SELECT Id
FROM Shortlist SWHERE Publish = 'True' order by date DESC
-- Now, return the set of paged records
SELECT S.*FROM @TempItems t
INNER JOIN ShortList S ON
t.ShortListId = S.Id
WHERE ID BETWEEN @startRowIndex AND (@startRowIndex + @maximumRows) - 1
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Nov 14, 2005
I have a stored procedure which returns the results fine, i.e. my asp code of
do while not objRS.EOF
display record n
objRS.Movenext
Loop
Included in the stored procedure is the number of pages that are ultimately returned, however I don't know how to access that value from my asp code.
Here is the stored procedure. I want to get the value of PageCount from my ASP code????
CREATE PROCEDURE GetSortedPage(
@TableName VARCHAR(50),
@PrimaryKey VARCHAR(25),
@SortField VARCHAR(100),
@PageSize INT,
@PageIndex INT = 1,
@QueryFilter VARCHAR(100) = NULL
) AS
SET NOCOUNT ON
DECLARE @SizeString AS VARCHAR(5)
DECLARE @PrevString AS VARCHAR(5)
SET @SizeString = CONVERT(VARCHAR, @PageSize)
SET @PrevString = CONVERT(VARCHAR, @PageSize * (@PageIndex - 1))
IF @QueryFilter IS NULL OR @QueryFilter = ''
BEGIN
EXEC(
'SELECT * FROM ' + @TableName + ' WHERE ' + @PrimaryKey + ' IN
(SELECT TOP ' + @SizeString + ' ' + @PrimaryKey + ' FROM ' + @TableName + ' WHERE ' + @PrimaryKey + ' NOT IN
(SELECT TOP ' + @PrevString + ' ' + @PrimaryKey + ' FROM ' + @TableName + ' ORDER BY ' + @SortField + ')
ORDER BY ' + @SortField + ')
ORDER BY ' + @SortField
)
EXEC('SELECT (COUNT(*) - 1)/' + @SizeString + ' + 1 AS PageCount FROM ' + @TableName)
END
ELSE
BEGIN
EXEC(
'SELECT * FROM ' + @TableName + ' WHERE ' + @PrimaryKey + ' IN
(SELECT TOP ' + @SizeString + ' ' + @PrimaryKey + ' FROM ' + @TableName + ' WHERE ' + @QueryFilter + ' AND ' + @PrimaryKey + ' NOT IN
(SELECT TOP ' + @PrevString + ' ' + @PrimaryKey + ' FROM ' + @TableName + ' WHERE ' + @QueryFilter + ' ORDER BY ' + @SortField + ')
ORDER BY ' + @SortField + ')
ORDER BY ' + @SortField
)
EXEC('SELECT (COUNT(*) - 1)/' + @SizeString + ' + 1 AS PageCount FROM ' + @TableName + ' WHERE ' + @QueryFilter)
END
RETURN 0
GO
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Oct 12, 2007
Hello, I receive this error "Incorrect syntax near 'GetGalleryPaged'." I'm trying to use custom paging on a stored procedure. ....... Dim mySqlConn As New SqlConnection(ConnStr) Dim objDA As New SqlDataAdapter("GetGalleryPaged", mySqlConn) objDA.SelectCommand.Parameters.Add("@startRowIndex", SqlDbType.Int, 1) objDA.SelectCommand.Parameters.Add("@@maximumRows", SqlDbType.Int, 9) Dim objDS As New DataSet() Dim objPds As PagedDataSource = New PagedDataSource objDA.Fill(objDS, "Gallery") <<----error here mySqlConn.Close() objPds.DataSource = objDS.Tables(0).DefaultView objPds.AllowPaging = True....... ALTER PROCEDURE dbo.GetGalleryPaged ( @startRowIndex int, @maximumRows int)AS SELECT idgallery, g_picpath FROM ( SELECT idgallery, g_picpath, ROW_NUMBER() OVER (ORDER BY idgallery DESC) AS RowRank FROM Gallery ) AS GalleryWithRowNumber WHERE RowRank > @startRowIndex AND RowRank <= (@startRowIndex + @maximumRows) ORDER BY idgallery DESC cheers,imperialx
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Jan 15, 2004
my procedure is like this
////////////////////////////////////
CREATE PROCEDURE dbo.test2
(
@Page_No int,
@PageSize int,
@RowCount int output
)
AS
declare @intBeginID int
declare @intEndID int
declare @Counter int
set @Counter = 1
select @RowCount = count(*) from project
declare cro_fastread cursor scroll
for select * from project order by sector
open cro_fastread
select @intBeginID=(@Page_No-1)*@PageSize+1
select @intEndID = @intBeginID+@PageSize-1
fetch absolute @intBeginID from cro_fastread
WHILE @@FETCH_STATUS = 0 and @Counter < @PageSize
BEGIN
set @Counter = @Counter + 1
FETCH NEXT FROM cro_fastread
END
close cro_fastread
deallocate cro_fastread
/////////////////////////////////////////
my problem is the "FETCH" method can only get a row at one time, so there would be return many recordsets, how can I merge all the return recordset into one.
thanks in advance!
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Feb 21, 2008
Hi Everybady
Currenctly I have facing a problem on how to create a stored procedure that able to filter the data and order it dynamically on selected row.
does anyone know how to do that
I have successfully create a stored procedure that able to order with any colume at any direction and select it from rownumber to another rownumber.
But i have failed to add another function with is where claus to do filtering on the data after ordering and selection
does anybody can give me a example about that?
Thanks a lot
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May 6, 2007
As I said above, how do I put sorting + paging in a stored procedure.My database has approximately 50000 records, and obviously I can't SELECT all of them and let GridView / DataView do the work, right? Or else it would use to much resources per one request.So I intend to use sorting + paging at the database level. It's going to be either hardcode SQL or stored procedures.If it's hardcode SQL, I can just change SQL statement each time the parameters (startRecord, maxRecords, sortColumns) change.But I don't know what to do in stored procedure to get the same result. I know how to implement paging in stored procedure (ROW_NUMBER) but I don't know how to change ORDER BY clause at runtime in the stored procedure.Thanks in advance.PS. In case "ask_Scotty", who replied in my previous post, http://forums.asp.net/thread/1696818.aspx, is reading this, please look at my reply on your answer in the last post. Thank you.
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Apr 28, 2008
This is for SQL Server 2000. The purpose of the procedure is to return a subset of a filtered and sorted result set. The subset, filter criteria, and sort column and sort direction can be set dynamically. It uses the rowcount technique for paging.
This would be used to drive an ASP.NET gridview which supports filtering of the data, paging, and sorting. Please let me know what improvements I can make or if you have an idea for a better solution. (I didn't put this in a vBulletin code block because personally I find two sets of scroll bars annoying, but I can if people think it's better).
CREATE PROCEDURE dbo.Books_GetFilteredSortedSubset
(
-- paging
@startRowIndex INT = 1,
@maximumRows INT = 999999,
-- sorting
@sortColumn NVARCHAR(30) = 'title_id',
@sortDirection NVARCHAR(4) = 'ASC',
-- filtering
@title VARCHAR(100) = NULL,
@type VARCHAR(30) = NULL,
@price MONEY = NULL
)
AS
BEGIN
DECLARE @sql NVARCHAR(4000)
DECLARE @parameters NVARCHAR(4000)
DECLARE @tableSource NVARCHAR(4000)
DECLARE @orderByExpression NVARCHAR(4000)
DECLARE @searchCondition NVARCHAR(4000)
DECLARE @uniqueKey NVARCHAR(30)
-- set the unique key used to ensure the rows are sorted deterministically
SET @uniqueKey = 'title_id'
-- build the FROM table source used throughout this procedure
SET @tableSource = 'titles t
inner join publishers p on t.pub_id = p.pub_id'
-- build the WHERE search condition used to control filtering throughout this procedure
SET @searchCondition = '(1 = 1)'
IF @title IS NOT NULL
SET @searchCondition = @searchCondition + ' AND (title LIKE ''%' + @title + '%'')'
IF @type IS NOT NULL
SET @searchCondition = @searchCondition + ' AND (type LIKE ''' + @type + '%'')'
IF @price IS NOT NULL
SET @searchCondition = @searchCondition + ' AND (price = ' + CAST(@price AS NVARCHAR) + ')'
-- build the ORDER BY expression used to control the sorting throughout this procedure
SET @orderByExpression = @sortColumn + ' ' + @sortDirection
-- add uniqeKey to ORDER BY statement to ensure consistent ordering of results when @sortColumn is not unique
IF @sortColumn <> @uniqueKey
SET @orderByExpression = @orderByExpression + ', ' + @uniqueKey + ' ' + @sortDirection
-- Get the column value at the position specified by @startRowIndex when the results are sorted in the desired sort order
SET @sql = 'SET ROWCOUNT @rowcount; SELECT @start_row = ' + @sortColumn + ', @start_row_id = ' + @uniqueKey +
' FROM ' + @tableSource +
' WHERE ' + @searchCondition + ' ORDER BY ' + @orderByExpression
PRINT @sql
SET @parameters = '@rowcount INT, @start_row sql_variant OUTPUT, @start_row_id sql_variant OUTPUT'
DECLARE @start_row sql_variant
DECLARE @start_row_id sql_variant
EXEC sp_executesql @sql, @parameters, @rowcount = @startRowIndex, @start_row = @start_row OUTPUT, @start_row_id = @start_row_id OUTPUT
-- Get the filtered subset of results
-- add sql to filter the results based on criteria passed in as parameters
SET @sql = 'SET ROWCOUNT @rowcount; ' +
'SELECT
t.title_id,
t.title,
t.price,
t.type,
p.pub_name,
p.city,
p.state,
p.country
FROM ' + @tableSource +
' WHERE (' + @searchCondition + ') AND '
-- add sql to control the starting row
IF @sortDirection = 'ASC'
SET @sql = @sql + '( (' + @sortColumn + ' > @start_row) OR (' +
@sortColumn + ' = @start_row AND ' + @uniqueKey + ' >= @start_row_id) )'
ELSE
SET @sql = @sql + '( (' + @sortColumn + ' < @start_row) OR (' +
@sortColumn + ' = @start_row AND ' + @uniqueKey + ' <= @start_row_id) )'
-- add sql to control the ordering of everything
SET @sql = @sql + ' ORDER BY ' + @orderByExpression
PRINT @sql
SET @parameters = '@rowcount INT, @start_row sql_variant, @start_row_id sql_variant'
EXEC sp_executesql @sql, @parameters, @rowcount = @maximumRows, @start_row = @start_row, @start_row_id = @start_row_id
-- Reset the rowcount for others
SET ROWCOUNT 0
END;
GO
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Jan 23, 2008
Has anyone encountered cases in which a proc executed by DTS has the following behavior:
1) underperforms the same proc when executed in DTS as opposed to SQL Server Managemet Studio
2) underperforms an ad-hoc version of the same query (UPDATE) executed in SQL Server Managemet Studio
What could explain this?
Obviously,
All three scenarios are executed against the same database and hit the exact same tables and indices.
Query plans show that one step, a Clustered Index Seek, consumes most of the resources (57%) and for that the estimated rows = 1 and actual rows is 10 of 1000's time higher. (~ 23000).
The DTS execution effectively never finishes even after many hours (10+)
The Stored procedure execution will finish in 6 minutes (executed after the update ad-hoc query)
The Update ad-hoc query will finish in 2 minutes
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Aug 27, 2007
Hi All!
I have Store Procedure:
If exists(Select * From sysobjects Where Name like 'Forum_Topic_SelectFromForum') Drop Procedure Forum_Topic_SelectFromForumgoCREATE PROCEDURE Forum_Topic_SelectFromForum( @ForumID varchar(10))
AS BEGIN TRANSACTIONSELECT * from Forum_Topic where ForumID=@ForumID Order by Tmp DESCIF @@ERROR <> 0 ROLLBACK TRANSACTIONELSE COMMIT TRANSACTION
Now, I want to Add 2 Variables: @Offset int, @Count int . With @Offset: the point of data, @Count: sum of row will get.
when get data I want it get from @Offset to Added @Count.
Help me to rewrite this store procedure. Thanks
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Apr 23, 2008
Hi,
I've got some procedure which pages select query, the example is below:
Code Snippet
CREATEEND PROC GetCustomersByPage
@PageSize int, @PageNumber int
AS
Declare @RowStart int
Declare @RowEnd int
if @PageNumber > 0
Begin
SET @PageNumber = @PageNumber -1
SET @RowStart = @PageSize * @PageNumber + 1;
SET @RowEnd = @RowStart + @PageSize - 1 ;
With Cust AS
( SELECT CustomerID, CompanyName, CompanyAddress,
ROW_NUMBER() OVER (order by CompanyName) as RowNumber
FROM Customers )
select *
from Cust
Where RowNumber >= @RowStart and RowNumber <= @RowEnd end
How can I change this procedure in order to page the query OVER the column set as an argument?
In other words I would like to execute proc like:
- exec GetCustomersByPage 10, 1, 'CompanyName' which pages by CompanyName(...OVER (order by CompanyName)...)
- exec GetCustomersByPage 10, 1, 'CompanyAddress' which pages by ComanyAddress
Is it possible?
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Mar 19, 2007
Hi All,
I am using store procedure to which we pass ...
1.Sql query (String)
2.Starting index (Integer)
3.Page size (Integer)
4.total records out (Integer)
It works fine for the simple queries like "select * from tblcountry" but give error in case when we have sort of inline query or order clause or some complex query etc.
Despite of what is happing in the procedure can any help me out with a simple store procedure to which i give any query , start index and page size it should give me record set according to the given page.
For example query could be 'Select * from tblcountry where countryid in (select * from tblteachers) order by countryname desc', start index=0 , page size is 100 and total records are 500.
Note:
When i pass this query to sql server directly using command object its exectued successfully (this mean that it will also run fine in query analyzer), but i want to use paging in sql server so that is why i need a procedure to implement paging and query could be any its fully dynamic but i will be a valid query.
Your help in this regard is realy apperciated...
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Jan 12, 2007
For some reason, I run a stored procedure in Query Analyzer and it works fine. When I run the very same procedure in MS access by clicking on its link I have to run it twice. The first run gives me the message that the stored procedure ran correctly but returned no records. The second run gives me the correct number of records but I have to run it twice. I am running month-to-month data. The first run is Jan thru March. Jan and Feb have no records so I run three months on the first set. The ensuing runs are individual months from April onward. The output is correct but any ideas on why I have to do it twice in Access? I am a bit new to stored procedures but my supervisor assures me that it should be exactly the same.
ddave
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Jun 13, 2007
Seems like I'm stealing all the threads here, : But I need to learn :) I have a StoredProcedure that needs to return values that other StoredProcedures return.Rather than have my DataAccess layer access the DB multiple times, I would like to call One stored Procedure, and have that stored procedure call the others to get the information I need. I think this way would be more efficient than accessing the DB multiple times. One of my SP is:SELECT I.ItemDetailID, I.ItemDetailStatusID, I.ItemDetailTypeID, I.Archived, I.Expired, I.ExpireDate, I.Deleted, S.Name AS 'StatusName', S.ItemDetailStatusID, S.InProgress as 'StatusInProgress', S.Color AS 'StatusColor',T.[Name] AS 'TypeName', T.Prefix, T.Name AS 'ItemDetailTypeName', T.ItemDetailTypeID FROM [Item].ItemDetails I INNER JOIN Item.ItemDetailStatus S ON I.ItemDetailStatusID = S.ItemDetailStatusID INNER JOIN [Item].ItemDetailTypes T ON I.ItemDetailTypeID = T.ItemDetailTypeID However, I already have StoredProcedures that return the exact same data from the ItemDetailStatus table and ItemDetailTypes table.Would it be better to do it above, and have more code to change when a new column/field is added, or more checks, or do something like:(This is not propper SQL) SELECT I.ItemDetailID, I.ItemDetailStatusID, I.ItemDetailTypeID, I.Archived, I.Expired, I.ExpireDate, I.Deleted, EXEC [Item].ItemDetailStatusInfo I.ItemDetailStatusID, EXEC [Item].ItemDetailTypeInfo I.ItemDetailTypeID FROM [Item].ItemDetails IOr something like that... Any thoughts?
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Aug 2, 2006
I have created a stored proc for paging on a datalist which uses a objectDataSource.
I have a output param itemCount which should return the total rows. Them I am creating a temp table to fetch the records for each page request. My output param works fine if I comment out all the other select statements. But returns null with them. Any help would be appreciated.
CREATE PROCEDURE [dbo].[CMRC_PRODUCTS_GetListByCategory]( @categoryID int, @pageIndex INT, @numRows INT, @itemCount INT OUTPUT )AS
SELECT @itemCount= COUNT(*) FROM CMRC_Products where CMRC_Products.CategoryID=@categoryID Declare @startRowIndex INT; Declare @finishRowIndex INT; set @startRowIndex = ((@pageIndex -1) * @numRows) + 1; set @finishRowIndex = @pageIndex * @numRows
DECLARE @tCat TABLE (TID int identity(1,1),ProductID int, CategoryID int, SellerUserName varchar(100), ModelName varchar(100), Medium varchar(50),ProductImage varchar(100),UnitCost money,Description varchar(1500), CategoryName varchar(100), isActive bit,weight money)
INSERT INTO @tCat(ProductID, CategoryID,SellerUserName,ModelName,Medium,ProductImage,UnitCost,Description,CategoryName, isActive,weight)SELECT CMRC_Products.ProductID, CMRC_Products.CategoryID, CMRC_Products.SellerUserName, CMRC_Products.ModelName, CMRC_Products.Medium,CMRC_Products.ProductImage, CMRC_Products.UnitCost, CMRC_Products.Description, CMRC_Categories.CategoryName, CMRC_Products.isActive,CMRC_Products.weightFROM CMRC_Products INNER JOIN CMRC_Categories ON CMRC_Products.CategoryID = CMRC_Categories.CategoryIDWHERE (CMRC_Products.CategoryID = @categoryID) AND (CMRC_Products.isActive = 1)
SELECT ProductID, CategoryID,SellerUserName,ModelName,Medium,ProductImage,UnitCost,Description,CategoryName, isActive,weightFROM @tCat WHERE TID >= @startRowIndex AND TID <= @finishRowIndexGO
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Apr 29, 2006
let's suppose that we have a table entitled "tab1" which has more than 1000 rows and about 10 columns
so in SQL 2000, if I do this query:
SELECT * FROM tab1
the result will be displaying all the rows from the begining.
and my teacher told me that there's a new option in SQL 2005 which is you can display the result of the query in a page mode.
so can anyone tell me how can I do so for this query:
SELECT * FROM tab1
so that I can see the results in pages.
thanks
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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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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
Dim blnError As Boolean = False
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)
Catch ex As Exception
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
Sub btnOpen_Click(ByVal sender As Object, ByVal e As EventArgs) Handles btnOpen.Click
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
Sub btnQuery_Click(ByVal sender As Object, ByVal e As EventArgs) Handles btnQuery.Click
Dim queryDialog As New QueryDialog()
If queryDialog.ShowDialog() = System.Windows.Forms.DialogResult.OK Then
Me.Cursor = Cursors.WaitCursor
DisableAllButtons()
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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Nov 23, 2004
How to optimize the following Stored procedure running on MSSQL server 2000 sp4 :
CREATE PROCEDURE proc1
@Franchise ObjectId
, @dtmStart DATETIME
, @dtmEnd DATETIME
AS
BEGIN
SET NOCOUNT ON
SELECT p.Product
, c.Currency
, c.Minor
, a.ACDef
, e.Event
, t.Dec
, count(1) "Count"
, sum(Amount) "Total"
FROM tb_Event t
JOIN tb_Prod p
ON ( t.ProdId = p.ProdId )
JOIN tb_ACDef a
ON ( t.ACDefId = a.ACDefId )
JOIN tb_Curr c
ON ( t.CurrId = c.CurrId )
JOIN tb_Event e
ON ( t.EventId = e.EventId )
JOIN tb_Setl s
ON ( s.BUId = t.BUId
and s.SetlD = t.SetlD )
WHERE Fran = @Franchise
AND t.CDate >= @dtmStart
AND t.CDate <= @dtmEnd
AND s.Status = 1
GROUP BY p.Product
, c.Currency
, c.Minor
, a.ACDef
, e.Event
, t.Dec
RETURN 1
END
GO
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May 31, 2006
hello, I have this project that I can't find it.
let's say we have more than 100 000 rows in a table called table 1, so if we do: SELECT * FROM TABLE1
the result will be dispalying all the rows with a large scrollbar.
But there's a new TSQL in SQL 2005 "ROW_COUNT" which will help to do the paging. so I have found the procedure but all I need now is to display NEXT and PREVIOUS button in the results in order to switch between the pages. So please any help, Thank you
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May 23, 2007
Hi,I
am working on this select query for a report on website users. The
resulting rows will be displayed in a datagrid with custom paging. I
want to fetch 100 rows each time. This is the simplified query,
@currpage is passed as a parameter. ________________________________________________________________________________DECLARE @table TABLE (rowid INT IDENTITY(1,1), userid INT)INSERT INTO @table (userid) SELECT userid FROM UsersSELECT T.rowid, T.userid, ISNULL(O.userid, 0)FROM @table TLEFT OUTER JOIN ( SELECT DISTINCT(userid) FROM orders)AS OON O.userid = T.useridAND T.rowid > ((@currpage-1) * 100) AND T.rowid <= (@currpage * 100)ORDER BY T.rowid________________________________________________________________________________If
I run this query it returns all the rows, not just the 100 rows
corresponding to the @currpage value. What am I doing wrong? (The
second table with left outer join is there as I need one field to
indicate whether the user has placed an order with us or not. If the
value is 0, the user has not placed any orders) Thanks.
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Aug 13, 2007
How do I write a query (using a union) suitable for paging
I currently have a query which results from two queries combined by a union. It returns 3000 rows. I want to replace that query with one which returns only 50 rows from the relevant page [using ROW_NUMBER()].
Is there a way to do this with only 1 CTE or will I need to use two consecutive CTEs [the first get a union on the queries and the second to apply ROW_NUMBER()]. I can't see a way of doing it with only 1 CTE table.
Alternatively is there a very efficient way to do it using derived tables?
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Oct 10, 2007
I am getting incorrect results from my paging query, where the same results are being returned multiple times. Here are two queries I have found to bring the same results:select top 20 * from lookupdocuments_dbv where catname_cst='MyCategoryName' and (docid_cin not in (select top 620 docid_cin from lookupdocuments_dbv where catname_cst='MyCategoryName'))select top 20 * from lookupdocuments_dbv where catname_cst='MyCategoryName' and (docid_cin not in (select top 640 docid_cin from lookupdocuments_dbv where catname_cst='MyCategoryName'))When I remove the catname_cst where clause it brings back results properly (i.e. records 622-642 and 643-663). What is wrong with my where clause that is causing identical data to be returned?
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Jul 26, 2007
Hi,
I want to write query to implement paging in sql server ce 3.0. But it seems it does not support TOP or LIMIT keyword.
Can someone suggest alternative way to write a custom paging query in sql server ce 3.0.
Thanks,
van_03
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May 23, 2007
Hello to all,
I have a stored procedure. If i give this command exce ShortestPath 3418, '4125', 5 in a script and excute it. It takes more 30 seconds time to be excuted.
but i excute it with the same parameters direct in Microsoft SQL Server Management Studio , It takes only under 1 second time
I don't know why?
Maybe can somebody help me?
thanks in million
best Regards
Pinsha
My Procedure Codes are here:set ANSI_NULLS ON
set QUOTED_IDENTIFIER ON
GO
-- =============================================
-- Author: <Author,,Name>
-- Create date: <Create Date,,>
-- Description: <Description,,>
-- =============================================
ALTER PROCEDURE [dbo].[ShortestPath] (@IDMember int, @IDOther varchar(1000),@Level int, @Path varchar(100) = null output )
AS
BEGIN
if ( @Level = 1)
begin
select @Path = convert(varchar(100),IDMember)
from wtcomValidRelationships
where wtcomValidRelationships.[IDMember]= @IDMember
and PATINDEX('%'+@IDOther+'%',(select RelationshipIDs from wtcomValidRelationships where IDMember = @IDMember) ) > 0
end
if (@Level = 2)
begin
select top 1 @Path = convert(varchar(100),A.IDMember)+'-'+convert(varchar(100),B.IDMember)
from wtcomValidRelationships as A, wtcomValidRelationships as B
where A.IDMember = @IDMember and charindex(convert(varchar(100),B.IDMember),A.RelationshipIDS) > 0
and PATINDEX('%'+@IDOther+'%',B.RelationshipIDs) > 0
end
if (@Level = 3)
begin
select top 1 @Path = convert(varchar(100),A.IDMember)+ '-'+convert(varchar(100),B.IDMember)+'-'+convert(varchar(100),C.IDMember)
from wtcomValidRelationships as A, wtcomValidRelationships as B, wtcomValidRelationships as C
where A.IDMember = @IDMember and charindex(convert(varchar(100),B.IDMember),A.RelationshipIDS) > 0
and charindex(convert(varchar(100),C.IDMember),B.RelationshipIDs) > 0 and PATINDEX('%'+@IDOther+'%',C.RelationshipIDs) > 0
end
if ( @Level = 4)
begin
select top 1 @Path = convert(varchar(100),A.IDMember)+ '-'+convert(varchar(100),B.IDMember)+'-'+convert(varchar(100),C.IDMember)+'-'+convert(varchar(100),D.IDMember)
from wtcomValidRelationships as A, wtcomValidRelationships as B, wtcomValidRelationships as C, wtcomValidRelationships as D
where A.IDMember = @IDMember and charindex(convert(varchar(100),B.IDMember),A.RelationshipIDS) > 0
and charindex(convert(varchar(100),C.IDMember),B.RelationshipIDs) > 0 and charindex(convert(varchar(100),D.IDMember), C.RelationshipIDs) > 0
and PATINDEX('%'+@IDOther+'%',D.RelationshipIDs) > 0
end
if (@Level = 5)
begin
select top 1 @Path = convert(varchar(100),A.IDMember)+ '-'+convert(varchar(100),B.IDMember)+'-'+convert(varchar(100),C.IDMember)+'-'+convert(varchar(100),D.IDMember)+'-'+convert(varchar(100),E.IDMember)
from wtcomValidRelationships as A, wtcomValidRelationships as B, wtcomValidRelationships as C, wtcomValidRelationships as D, wtcomValidRelationships as E
where A.IDMember = @IDMember and charindex(convert(varchar(100),B.IDMember),A.RelationshipIDS) > 0
and charindex(convert(varchar(100),C.IDMember),B.RelationshipIDs) > 0 and charindex(convert(varchar(100),D.IDMember), C.RelationshipIDs) > 0
and charindex(convert(varchar(100),E.IDMember),D.RelationshipIDs) > 0 and PATINDEX('%'+@IDOther+'%',E.RelationshipIDs) > 0
end
if (@Level = 6)
begin
select top 1 @Path = '' from wtcomValidRelationships
end
END
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Jun 28, 2002
Message:
Hi,
Suppose i execute a query,
Select * from emp,
I get 100 rows of result, i want to write a sql query similar to the one available in MySql database where in i can specify the starting row and number of rows of records i want,
something like,
select * from emp LIMIT 10,20
I want all the records from the 10th row to the 20th row.
This would be helpful for me to do paging in the front end , where is i can navigate to the next previous buttons and fetch the corresponding records.
I want to do something like in google, previous next screens.
So I am trying to limit the number of rows fetched from a query.
somethin like,
select * from emp where startRowNum=10 and NoOfRecords = 20
so that i can get rows from 10 to 30.
Has any1 done this, plz let me know.
Cheers,
Prashant.
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Jun 27, 2007
hey.. say i have a table with 4 columns, Id, col1, col2 & col 3the way it works is the id and one of the col's will have info, the other 2 cols will be emptyim trying to write a proc that returns the value of the column that has info + a number that is stored in a string to represent the column eg: CREATE PROCEDURE proc_Test @Id int, @Answer varchar(100) outputasset nocount on select @Answer = col1 +', 1'from myTablewhere Id= @Idif @@rowcount < 1select @Answer = col2 +', 2'from myTablewhere Id= @Idif @@rowcount < 1
select @Answer = col3 +', 3'
from myTable
where Id= @IdreturnGO but for some reason, it only process's the first select statment and if nothing is in the column, it returns - ', 1' cheers!!!
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Apr 1, 2008
Hi,I am weak in writing stored procedure and want to learn it step by step.Now I have written a query and the requirement is such that I need to convert it in stored procedure.query:Select distinct empskill.tcatid,Coalesce(prm,0) as prm,coalesce(secn,0) as secn,a as technology,coalesce(skd,0) as skd,coalesce(knd,0) as knd,coalesce(tnd,0)as tnd,coalesce(dnd,0) as dnd from empskill RIGHT OUTER JOIN (select tcatid,Count(skilltypeid) AS prm from empskill where skilltypeid=1 group by tcatid) prms ON empskill.tcatid=prms.tcatid LEFT OUTER JOIN (select tcatid,Count(skilltypeid) AS secn from empskill where skilltypeid=2 group by tcatid) secs on empskill.tcatid=secs.tcatid RIGHT OUTER JOIN (select technology.category as a,empskill.tcatid from empskill,technology where empskill.tcatid=technology.tcatid group by empskill.tcatid,technology.category ) s ON empskill.tcatid=s.tcatid LEFT OUTER JOIN (select tcatid,Count(skilllevelid) AS skd from empskill where skilllevelid=1 group by tcatid) skds on empskill.tcatid=skds.tcatid LEFT OUTER JOIN (select tcatid,Count(skilllevelid) AS knd from empskill where skilllevelid=2 group by tcatid) knds on empskill.tcatid=knds.tcatid LEFT OUTER JOIN (select tcatid,Count(skilllevelid) AS tnd from empskill where skilllevelid=3 group by tcatid) tnds on empskill.tcatid=tnds.tcatid LEFT OUTER JOIN (select tcatid,Count(skilllevelid) AS dnd from empskill where skilllevelid=4 group by tcatid) dnds on empskill.tcatid=dnds.tcatid union select top 1 500 as tcatid,'' as prm,'' as sec,'more' as technology,'' as skd,'' as knd,'' as tnd,'' as dnd from empskill Can you please explain step by step how to convert this to stored procedure.Thanks a lot
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Nov 16, 1999
In access, I can create a function that I can call in a query. It runs that function iteratively. Do I have the same ability with SQL server? Can I call a stored procedure WITHIN a query? I would like to be able to do something like:
Insert into tblOrders(spFirst_Name) Select {Call spUpperLower(tblClients.First_Name)} from tblClients Where ...
So basically, spUpperLower would run on every First Name Row in the result set.
Any help would be much appreciated.
Thanks,
Brad
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Oct 2, 2001
I want to run a stored procedure from a query...
can I do this? Thanks!
CREATE VIEW dbo.V_EmploymentTerminationsResignations
AS
--the next 3 lines produce errors...
declare @StartDate datetime
declare @EndDate datetime
exec [hrs2].[dbo].[sp_getquarterinfo] --@StartDate OUTPUT, @EndDate OUTPUT
--they're designed to replace the hard coded stuff in the WHERE statement...
--a snippet of the originl view...
SELECT TOP 100 PERCENT dbo.Employee.OrgID, dbo.Employee.SSN, dbo.Employee.EMPLOYEE_NAME, , dbo.Employee.SPECIAL_STATUS,
WHERE ...
(dbo.Employee.LAST_PERS_ACTN_DATE BETWEEN CONVERT(DATETIME, '2001-07-01 00:00:00', 102) AND CONVERT(DATETIME, '2001-10-01 00:00:00', 102))
ORDER BY dbo.Employee.LAST_PERS_...
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Oct 22, 2007
Hi,
I have created an SQL query which returns the expected data. However, when I try to run it as a stored procedure, I get no rows returned.
(I assume I running the procedure correctly e.g. exec getNonDeployed RCN20047)
Code:
CREATE PROCEDURE getNonDeployed
@packageID text
AS
BEGIN
DECLARE @CollectionID VARCHAR(10)
DECLARE @Collections TABLE (CollectionID VARCHAR(10))
set @CollectionID = (SELECT
CollectionID
from ProgramOffers
where OfferID='@packageID');
WITH CollectionFull (SubCollectionID) AS
(
-- Create the anchor query. This establishes the starting
-- point
SELECT
SubCollectionID
from v_CollectToSubCollect a
where a.SubCollectionID=@CollectionID
UNION ALL
-- Create the recursive query. This query will be executed
-- until it returns no more rows
select
a.SubCollectionID
from v_CollectToSubCollect a
inner join CollectionFull b on b.SubCollectionID=a.ParentCollectionID
)
Insert Into @Collections
SELECT * FROM CollectionFull
select a.RuleName AS MACHINENAME, c.IPAddress0 as IPADDRESS
from v_CollectionRuleDirect a
inner join @Collections b on b.CollectionID=a.CollectionID
inner join v_GS_DEVICE_NETWORK c on c.ResourceID=a.ResourceID
where RuleName not in (select distinct a.MachineName as MACHINENAME
from v_StatusMessage a, v_StatMsgAttributes b, v_CollectionRuleDirect c, v_GS_DEVICE_NETWORK d, v_Collection e
where (a.RecordID=b.RecordID AND a.MachineName=c.RuleName and c.ResourceID=d.ResourceID and c.CollectionID=e.CollectionID)
AND b.AttributeValue IN ('@packageID'))
END
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Jul 31, 2007
Hi All:
I have a situation where Im calling a stored procedure to insert some information.
When this information is inserted it is given a date/time stamp - say something in Aug.
There will be some corresponding records from the previous month already in the database that have some additional information that was manually added.
I need to query the corresponding records from the previous month and insert that info into the records that were just inserted.
the problem Im having is that i need to grab the most recent corresponding record. could be a day or a month prior to the one I just inserted. the also could be a record for months prior to that.
So how do i get the most recent corresponding record to my inserted record
Any suggestion on how to query this? and then pass the result to an udpate statement
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Jul 23, 2005
Is there any way to do the following?select Max(FieldOne) From (spGetSomeData 100,'test' )Or do I need to define a view and have the stored proc use that view?The stored proc does some things with temp tables that would bedifficult to replicate with a view which is why I'm asking.
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