Cache Only A Dropdown In A Page, With Data Returned By Database
Dec 12, 2006
Dear Friends,
I want your help to know the best way to cache the data of a dropdownbox returned by a SQL Query.(SELECT FIELD FROM DBO.TABLE)
This data returned by database is used in more than one dropdown on multiple pages. I want to cache only the dropdown control, not the entire page. Which is the best way to do it? The data isn't refreshed often, probably once per month.
Could you tell me the best way?
THANKS
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Dec 27, 2007
Im getting this error when trying to set up a cache dependency...are there any special permissions etc?From CS:SqlCacheDependency dep = new SqlCacheDependency("MySite-Cache", "Products");Cache.Insert("Products", de.GetAllProductsList(), dep); From connectionStrings.config:<add name="SiteDB" connectionString="Data Source=localhost,[port]SQLEXPRESS;Integrated Security=true;User Instance=true; AttachDBFileName=|DataDirectory|ASPNETDB.MDF" providerName="System.Data.SqlClient" />Also tried this using my machinename<add name="SiteDB" connectionString="Data
Source=<machinename>,[port]SQLEXPRESS;Integrated Security=true;User
Instance=true; AttachDBFileName=|DataDirectory|ASPNETDB.MDF"
providerName="System.Data.SqlClient" /> From web.config: <caching> <sqlCacheDependency enabled="true" pollTime="10000"> <databases> <add name="MySite-Cache" connectionStringName="SiteDB" pollTime="2000"/> </databases> </sqlCacheDependency> </caching> EDIT: So making progress I can't seem to get the table registered for cache dependency:The sample i have says"aspnet_regsql.exe -E -S .SqlExpress -d aspnetdb -t Customers -et"and the command line response is "Enabling the table for SQL cache dependency..An error has happened. Details of the exception:The table 'Customers' cannot be found in the database."Where does this "Customers" table come from? There is obviously not an application specific "Customers" table in aspnetdb I'm confused probably more by the example than anything....
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Feb 21, 2008
Hi All
i have created one report using SSRS 2005, in this report one parameter is multivalue parameter, this report preview working fine and user able to select multivalues. but the problem is i deployed this report in server and opened in client system (reports shown to user using report viewer in aspx pages), i am able to access the report but multivalue parameter dropdown is not working.
when i clicked on multivalue parameter dropdown report refreshing and remaining parameters default vaues coming up..
i am unable to find the solution
please anyone help me
thanks
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Aug 17, 2015
I'm getting an alert which states that both my Buffer Cache Hit Ratio and PLE are low on one of my SQL Servers though I'm not sure how to correctly check this.
I ran:
SELECT object_name, counter_name, cntr_value
FROM sys.dm_os_performance_counters
WHERE [object_name] LIKE '%Buffer Manager%'
AND [counter_name] = 'Buffer cache hit ratio'
Which gives me the Buffer Cache Hit Ratio, cntr_Value of 9 though its constantly dipping between 3-3000 and is never steady and I'm unsure if this is normal.
I also ran:
SELECT object_name, counter_name, cntr_value
FROM sys.dm_os_performance_counters
WHERE [object_name] LIKE '%Buffer Manager%'
AND [counter_name] = 'Page life expectancy'
Which gives me the Page life expectancy of 209061.
If these values would cause concern and if this is a normal Buffer Cache Hit Ratio? It's constantly dropping from high or low from what I can see. These scripts were pulled from another forum and I'm assuming they're showing the correct values.
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May 31, 2007
I need help in sorting data return from database. For example, I have the following data:ID field1 1 Computer 2 Cell Phone 3 iPod 4 Car I know that a select statement will look something like this: SELECT field1 FROM table ORDER BY field1. However, I want the data to be display this way in the gridview: ID field1
3 iPod
1 Computer
2 Cell Phone
4 Car Any idea of how I can make this happen. Any idea is appreciated.
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Apr 3, 2014
I am working with extracting data from a SAP database, and I would like to perform some 'visual formatting' on the returned data. Because the SQL code that I am writing will be used in a custom Report it is not possible for me to use '3rd Party' formatting tools. Furthermore because the database is hosted on an MS SQL 2008 R2 RDBMS it is not possible to use the IIF() function.
Here is a sample of the data that I am getting back at the moment. URL...Here is how I would like the data to be returned (with the exception that the blue lines will ideally be blank cells). URL...
I have come to believe that I should be using the ROW_NUMBER() function, along with the OVER() function and possibly the 'partition by' keywords.Here is my original code -
Code:
select
td.ItemCode as 'Item Code'
, td.Dscription as 'Item Description', td.Quantity as 'Order Qty'
, titm.OnOrder as 'PO Qty'
, th.CardCode as 'BP Code', th.CardName as 'BP Name'
, th.DocNum as 'Sales Order Number'
, tsp.SlpName as 'Sales Person'
, twhs.WhsCode as 'Whs Code'
, isnull(tbloc.BINLABEL, '') as 'BIN Label', isnull(cast(tbloc.QUANTITY as nvarchar(20)), '') as 'BIN Qty'
code]...
Notice above that I only see the 'Seq' and no other data. How can I go about modifying this code so that I see all of the data columns I desire? If I further 'refine' the above, by adding case statements and the individual columns that I want to see (as opposed to using the * wildcard) I get a long list of error messages.
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Jun 20, 2006
I have a strange problem. I have some code that executes a sql query. If I run the query in SQL server query analyzer, I get a set of data returned for me as expected. This is the query listed on lines 3 and 4. I just manually type it into query analyzer.
Yet when I run the same query in my code, the result set is slightly different because it is missing some data. I am confused as to what is going on here. Basically to examine the sql result set returned, I write it out to an XML file. (See line 16).
Why the data returned is different, I have no idea. Also writing it out to an XML file is the only way I can look at the data. Otherwise looking at it in the debugger is impossible, with the hundreds of tree nodes returned.
If someone is able to help me figure this out, I would appreciate it.
1. public DataSet GetMarketList(string region, string marketRegion)2. {3. string sql = @"SELECT a.RealEstMarket FROM MarketMap a, RegionMap b " + 4."WHERE a.RegionCode = b.RegionCode"; 5. DataSet dsMarketList = new DataSet();6. SqlConnection sqlConn = new SqlConnection(intranetConnStr); 7. SqlCommand cmd = new SqlCommand(sql,sqlConn);8. sqlConn.Open();9. SqlDataAdapter adapter = new SqlDataAdapter(cmd); 10. try11. {12. adapter.Fill(dsMarketList);
13. String bling = adapter.SelectCommand.CommandText;//BRG 14. dsMarketList.DataSetName="RegionMarket"; 15. dsMarketList.Tables[0].TableName = "MarketList"; 16. dsMarketList.WriteXml(Server.MapPath ("myXMLFile.xml" )); // The data written to 17. myXMLFile.xml is not the same data that is returned when I run the query on line 3&4 18. // from the SQL query 19. } 20. catch(Exception e) 21. { 22. // Handle the exception (Code not shown)
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Nov 28, 2006
Hello I have a project that uses a large number of MS Data access pages created in Access 2003 and runs on MS SQL2005.
When I am on lets say my client, (first page in a series) data access page and I have completed the fields in the (DAP), I am directing my users to the next step of the registration process by means of a hyperlink to another Data access page in the same web but in a linked or sometimes different table.
I need to pass data entered /created on the first page to the next page and populate the next page with some data from the first page / table. (like staying on the client name and ID when i go to the next page)
I also need the first data access page to open and display a blank or new record. Not an existing record. I will also be looking to creata a drop down box as a record selector.
Any pointers in the right direction would be appreciated.
I am some what new to data access pages so a walk through would be nice but anything you got is welcome. Thanks Peter€¦
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Apr 21, 2008
Hi,I have a shopping cart and before each product is added to the cart it checks to see if the stock control is turned on if so then checks the quantity available.My problem is that when i run the query select [dbStatus] from InventoryControl where [ID]=1 to view the status it is returning the incorrect bit value for dbStatus.If "dbStatus" is 0 in the database it returns 0 which is correct, but if the "dbStatus" is 1 in the db it returns -1!! If i run the query in query analyser the correct values are returned. Any ideas???Thanks in Advance
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Sep 12, 2014
Our server administrator forwarded some messages from SCOM that indicate:
SQL DB Engine 2012 Page Life Expectancy and Buffer Cache Hit Ratio is too low
When I logged into the offending server, I could not find anything in the SQL Log File that indicates this.
I was wondering how did SCOM identify this issue - where in SQL Server would this have been reported to SCOM?
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Apr 25, 2006
Gurus.I do not know if it is possible, but here is what I want to do.I want to allow user to page the SQL result, so he could decides toreturn from row 10 to row 20, or row 100 to 200, without returns thewhole resultset. Every time he sends another request, I do not mind tohit the database again, (I do not want to cache the result in themiddle tier server, scalability issue), and I know that I could achievethis with CURSOR, but unfortunately the FOR XML is not allowed in aCURSOR statement .(I know that I could achieve what I want to do by writing custom codein the middle tier, but I just want to see if there is a way to do thison the database side.)Any comments & suggestion is greatly appreciated.Thanks in advance.(I am using SQL2005)John
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Jun 7, 2007
Is there a way to extend the number of rows that will be returned so that Reporting services doesn't display such a large number of pages for the users to page through? It would be easier for them to "wheel mouse" through a long page on the screen.
Anyone out there have any thoughts on how this might be accomplished?
Thanks!
Travis
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Jan 30, 2008
Hi,
I have a table1 which points to a dataset1
I was wondering how I use the 'data region' dropdown selection which is present when i click the properties of a cell in table1, it always appear to be blank.
I would like to know how this works as i feel it will be useful in specifying various data regions within a table, I cant seem to find any relevant information on it, can someone tell me how this works ?
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Jan 4, 2006
Hi,
Can someone help me. I need to update a page on my site when the data in a database table is changed (by someone else).
I would like to poll the database every 5 secs or so to see if it has changed. I am using asp.net v1.1.
Any help would be appreciated.
Jon
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Dec 16, 2003
How can I populate options in a dropdown (combo?) box based on data pulled from a SQL database compared against certain paramaters (if it is not equal to x, equal to y, etc)?
Thanks.
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Feb 2, 2004
Hi masters
well got a SQL server 7 and a table
and got drop down list in my asp page
what I want to do is that the content and value of the drop down list will be grabbed from the database, when page loads.
can you please guide me
many thanks
S
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Apr 18, 2006
Hi All,
Is it possible to refresh the web page when certain table data is updated? And I cannot use the auto-refresh feature. Thank you very much.
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Apr 8, 2008
I am trying to populate a dropdownlist from a sql data source in my codebehind using c#. I thought I had the code correct but I keep getting the following error and I am stuck: "Only assignment, call, increment, decrement, and new object expressions can be used as a statement"
Here is the code:protected void populateOppNameList(){
SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString);SqlCommand cmd = new SqlCommand("SELECT empname FROM opportunity WHERE (username = " + userName + ")", conn);
SqlDataAdapter adapter = new SqlDataAdapter(cmd);
try
{
conn.Open();DataSet ds = new DataSet();DropDownList ddl_OppNames = (DropDownList)FormView1.FindControl("dropdownlist1");
ddl_OppNames.DataSource = ds;
ddl_OppNames.DataBind;}catch (Exception e)
{
}
finally
{if (conn != null) { conn.Close(); }
}
}
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Nov 29, 2007
Hi, this is my first week really trying to learn ASP.net (i'm currently working with 2.0).I have a page, that I am trying to set up that will allow the user to input data, now i'm sure that passing data from 1 webpage to 1 table in a SQL database is pretty streightforward, but how do you plan it out when you know that your web page is going to insert multiplte inserts into multiple tables, with the main table PK referencing all?Any ideas? Even just a starting point so I can get going with this? If I can help anymore, please let me know.
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Sep 5, 2007
I am using two tables, courses and video with a one to many relationship with the videos table being the many. How do I populate the courseID in the video table with the corresponding courseID from the courses table using a combination of Formview & Gridview or two Gridviews, or a dropdown field populated with the course name and courseID in a Form or details view.This is a simple task in Access accomplished using a dropdown list to select the correct video.
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May 31, 2007
Is there a way to drop clean buffers at the database level instead of the server/instance level like the undocumented €œDBCC FLUSHPROCINDB (@dbid)€??
Is there a workaround for €œdbo€? to be able to flush procedure and data cache without being elevated to €œsysadmin€? server role?
PS: I am aware of the sp_recompile option that can be used to invalidate cached execution plans.
Thx.
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Feb 24, 2006
Hello everyone,I have a webcontrol that uses database-structures alot, it uses the system tables in SQL to read column information from tables. To ease the load of the SQL server I have a property that stores this information in a cache and everything works fine.I am doing some research to find if there are anyway to get information from the SQL server that the structure from a table has changed.I want to know if a column or table has changed any values, like datatype, name, properties, etc.Any suggestions out there ?!
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May 7, 2015
I have a report with multiple tables. I need to show each tables in different pages. When there is no data for tables/tables , it is coming with the next table which has data. I have given "Add a page break after" option in the tablix but still the tables are coming together when no data available. How can I show it in different page?
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Nov 8, 2015
As the title states I have a 64bit DSN but when I try to create ODBC datasource in Reporting Services it does not appear in the dropdown box. I have created as a system DSN.
SQLServer 2008R2
Reporting Services 2008
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Feb 15, 2008
Hi guys,
I am looking at the plan caches/cached pages from the perspective of
sys.dm_os_memory_cache_counters and sql serverlan Cache - Cache Pages
For the first one I am using
select (sum(single_pages_kb) + sum(multi_pages_kb) )
from sys.dm_os_memory_cache_counters
where type = 'CACHESTORE_SQLCP' or type = 'CACHESTORE_OBJCP'
a slight change from a query in
http://blogs.msdn.com/sqlprogrammability/
For the second just perfmon.
The first one gives me a count of about 670,000 pages only for the object and query cache and the second one gives me a total of about 100,000 pages for five type of caches including object and query.
If I am using the query from http://blogs.msdn.com/sqlprogrammability/ to determin the plan cache size
select (sum(single_pages_kb) + sum(multi_pages_kb) ) * 8 / (1024.0 * 1024.0) as plan_cache_in_GB
from sys.dm_os_memory_cache_counters
where type = 'CACHESTORE_SQLCP' or type = 'CACHESTORE_OBJCP'
it gives me about 5 GB when in fact my SQL Server it can access only max 2GB with Total and Target Server Memory at about 1.5 GB.
Does anyone have any idea what is going on?
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Feb 27, 2008
Hi - I am pretty new to Reporting Services. I need to create a report where a single result row from the Select Statement populates an entire page of data. The regular grid or Matrix reports don't fit this need. Is there a simple way to do this?
Thanks - Dave
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Aug 16, 2000
Hi,
I was wondering if anyone knew where I could find good information on performing a database cache. I want to cache tables and run queries from them within a Cold Fusion Application.
Thanks.
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Jun 29, 1999
I have a server where the cache hit ratio averages 99.5%, however the cache flushes figure is high at 13068 over half a day, the avg free page scan is 122, both above what microsoft reccomend.
The server has 320Mb memory of which 272 is allocated to SQL Server.
Of the 272, 229.9 is allocated to the data cache.
I would be grateful of any suggestions to improve the situtaion
Thanks in advance
Tom Willetts
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Feb 1, 2008
Hi,
I created a report model using reporting services, deployed the model locally and then built a report based on that model. The report works fine, but any data updates don't show up, seems like data is cached. I bounced reporting services, cleared cached tables in ReportServerTempDB but of no use. Has anybody faced this problem? How can I get updated data for reports built through a report model. Any help is appreciated.
Thanks,
Sri
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Sep 28, 2015
We are troubleshooting a performance problem and the test result is slow the 1st time but the subsequent runs are faster.. Logging out of application and log back in ( connecting to a new database session) did not clear the buffer cache as I thought it would.. When does the database clear the buffer cache? Is it not per database session?
I can issue CHECKPOINT and then run DBCC DROPCLEANBUFFERS to clear the buffers in the disk. But since we are testing from the application,do we need to run these commands via application code to clear buffer/per database session OR can we run these commands from a management studio session?
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Jul 20, 2005
Hi all,We're looking at a vendor who uses the InterSystems Cache DatabasePlatform, but our IT department has zero experience with this system.This software package will have a pivotal and mission critical roll inour organization, so I'd like some comments on what others think ofthis database platform.Mainly I'm curious how easy/difficult it is to query a Cache Database,and does it use standard SQL calls like Oracle and MS SQL? What aboutODBC connections into the database from Crystal, MS Access, and OLAPtools? Any other caviets (backup, maintenance, etc)?Thanks in advance for any suggestions or comments Cache.Sam
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Jul 20, 2005
I'm currently working with a 10 million plus row database with the dataresiding on a Unix box with Cache 5.0. The problems is that it can take fivedays to pull one table from Cache to SQL 2000 using the ODBC connectionprovided by Cache in a SQL 2000 DTS package. I think the real problem isconverting the data from the post relational format (Cache) to a relationalformat (SQL 2000)???Does anyone have any ideas / suggestions on how to speed this transfer ofdata? I'm very new to Cache and any help would be greatly appreciated.Thanks,-p
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