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  • Excel > Microsoft Query > SQL Server > Multiple Parameters

    - by pojomx
    Hi, Im relatively new to sql server and excel/microsoft query, I have a query like this Select ...[data]...B1.b,B2.b,B3.b From TABLEA Inner join ( SELECT ---[data]...sum(...) as b From TABLEB WHERE Date between [startdate] and [enddate] ) as B1 Inner join ( SELECT ---[data]...sum(...) as b From TABLEB WHERE Date between [startdate-1week] and [enddate] ) as B2 Inner join ( SELECT ---[data]...sum(...) as b From TABLEB WHERE Date between [startdate-2weeks] and [enddate] ) as B3 Where Date between [startdate] and [enddate] It works, when i introduce the dates manually, but i need them to be "Dynamic" (introduced from excel) but, when I put the "?" (for parameters) on all the dates, it throws an error. "Invalid Parameter Number" :D How can i make this work, within excel? Im using SQL Server and Microsoft Query Connection Data.

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  • 500 Worker Threads, what kind of thread pool?

    - by Submerged
    I am wondering if this is the best way to do this. I have about 500 threads that run indefinitely, but Thread.sleep for a minute when done one cycle of processing. ExecutorService es = Executors.newFixedThreadPool(list.size()+1); for (int i = 0; i < list.size(); i++) { es.execute(coreAppVector.elementAt(i)); //coreAppVector is a vector of extends thread objects } The code that is executing is really simple and basically just this class aThread extends Thread { public void run(){ while(true){ Thread.sleep(ONE_MINUTE); //Lots of computation every minute } } } I do need a separate threads for each running task, so changing the architecture isn't an option. I tried making my threadPool size equal to Runtime.getRuntime().availableProcessors() which attempted to run all 500 threads, but only let 8 (4xhyperthreading) of them execute. The other threads wouldn't surrender and let other threads have their turn. I tried putting in a wait() and notify(), but still no luck. If anyone has a simple example or some tips, I would be grateful! Well, the design is arguably flawed. The threads implement Genetic-Programming or GP, a type of learning algorithm. Each thread analyzes advanced trends makes predictions. If the thread ever completes, the learning is lost. That said, I was hoping that sleep() would allow me to share some of the resources while one thread isn't "learning"

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  • Load Balancing and Failover for Read-Only PostgreSQL Database

    - by Eric J.
    Scenario Multiple application servers host web services written in Java, running in SpringSource dm Server. To implement a new requirement, they will need to query a read-only PostgreSQL database. Issue To support redundancy, at least two PostgreSQL instances will be running. Access to PostgreSQL must be load balanced and must auto-fail over to currently running instances if an instance should go down. Auto-discovery of newly running instances is desirable but not required. Research I have reviewed the official PostgreSQL documentation on this issue. However, that focuses on the more general case of read/write access to the database. Top google results tend to lead to older newsgroup messages or dead projects such as Sequoia or DB Balancer, as well as one active project PG Pool II Question What are your real-world experiences with PG Pool II? What other simple and reliable alternatives are available?

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  • Visual Studio 2010 SQL Server Database Project - Ignore Stored Procedures and Functions

    - by Carter
    I really like the new SQL Server Database projects in Visual Studio 2010. I also like using the "Generate DROP statements for objects that are in the target database but that are not in the database project" option in the deployment properties. However, I do not want to manage Stored Procedures and Functions using this interface; I have another tool for that. Every time I do a build and deploy, VS will drop my stored procedures that I have created with my external program. I would like to essentially "ignore" stored procedures and functions. Is there a way to ignore stored procedures and functions when building SQL Server Database projects? I won't be able to use the "Generate DROP statements..." option if I want to use my external tool for stored procedures and functions.

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  • SQL Server Efficiently dropping a group of rows with millions and millions of rows

    - by Net Citizen
    I recently asked this question: http://stackoverflow.com/questions/2519183/ms-sql-share-identity-seed-amongst-tables (Many people wondered why) I have the following layout of a table: Table: Stars starId bigint categoryId bigint starname varchar(200) But my problem is that I have millions and millions of rows. So when I want to delete stars from the table Stars it is too intense on SQL Server. I cannot use built in partitioning for 2005+ because I do not have an enterprise license. When I do delete though, I always delete a whole category Id at a time. I thought of doing a design like this: Table: Star_1 starId bigint CategoryId bigint constaint rock=1 starname varchar(200) Table: Star_2 starId bigint CategoryId bigint constaint rock=2 starname varchar(200) In this way I can delete a whole category and hence millions of rows in O(1) by doing a simple drop table. My question is, is it a problem to have hundreds of thousands of tables in your SQL Server? The drop in O(1) is extremely desirable to me. Maybe there's a completely different solution I'm not thinking of?

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  • Book recommendation for learning server management and Apache

    - by japancheese
    Hello, I'm currently managing a site that I feel could be optimized and utilized to be much faster, however, I'm having difficulty finding reliable information to do it. I find the Apache documentation to be a hard read, and too technical about things I don't have a strong grasp on. I'm just looking for a good beginner/intermediate book about server administration to learn as much as possible about Apache, as well as how to create a nice secure, robust server that doesn't crash at the first hint of unusual traffic surges. Thanks to anyone who can point me in the right direction.

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  • Is it possible to use a static IP assigned by my ISP for an offsite web server on a VPS (different ISP)?

    - by NightOwl888
    I have a web server on a Virtual Private Server with a hosting provider. Unfortunately, they are really stingy with IP addresses and I need to run several SSL certificates on my server, so I will need a few more than I have. I have a block of 5 static IP addresses on a business package through a different ISP and I am only using 1 of them for connectivity in the office. What I am wondering is if it is possible to use the 4 unused static IP addresses from this ISP on my VPS, which is hosted by another ISP? The VPS (web server) is running Windows Server 2008 R2 Web Edition. If this can be done, please let me know how to configure it.

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  • Performance optimization for SQL Server: decrease stored procedures execution time or unload the ser

    - by tim
    We have a web service which provides search over hotels. There is a problem with performance: a single request to the service takes around 5000 ms. Almost all of the time is spent in database by executing storing procedures. During the request our server (mssql2008) consumes ~90% of the processor time. When 2 requests are made in parallel the average time grows and is around 7000 ms. When number of request is increasing, the average time of response is increasing as well. We have 20-30 requests per minute. Which kind of optimization is the best in this case having in mind that the goal is to provide stable response time for the service: 1) Try to decrease the stored procedures execution time 2) Try to find the way how to unload the server It is interesting to hear from people who deal with booking sites.

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  • How to refactor T-SQL stored procedure encapsulating it's parameters to a class

    - by abatishchev
    On my SQL Server 2008 I have a stored procedure with a large number of parameters. The first part of them is used in every call and parameters from the second part are used rarely. And I can't move the logic to two different stored procedures. Is there a way to encapsulate all this parameters to a class or struct and pass it as a stored procedure parameter? Can I use SQL CLR. Are there other ways?

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  • T-SQL: from rows to columns but not an actual pivot

    - by Matte
    Is there a T-SQL (SQL Server 2008R2) query to transform TABLE_1 into the expected resultset? TABLE_1 +----------+-------------------------+---------+------+ | IdDevice | Timestamp | M300 | M400 | +----------+-------------------------+---------+------+ | 3 | 2012-12-05 16:29:51.000 | 2357,69 | 520 | | 6 | 2012-12-05 16:29:51.000 | 1694,81 | 470 | | 1 | 2012-12-05 16:29:51.000 | 2046,33 | 111 | +----------+-------------------------+---------+------+ Expected resultset +-------------------------+---------+--------+---------+--------+---------+--------+ | Timestamp | 3_M300 | 3_M400 | 6_M300 | 6_M400 | 6_M300 | 6_M400 | +-------------------------+---------+--------+---------+--------+---------+--------+ | 2012-12-05 16:29:51.000 | 2357,69 | 520 | 1694,81 | 470 | 2046,33 | 111 | +-------------------------+---------+--------+---------+--------+---------+--------+

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  • server controlled or Synchronized web slide show?

    - by Gnome Guru
    I am creating a e-learning application , where the students (wireless) connect to the teachers machine, the teacher hosts a tomcat server. the teacher has a set of HTML web-pages(each of which can be thought of as a slide). and the students can view a web slide-show on his/her browser... the problem is.... i want the pages on the students browser to be redirected according to the teachers input.. in short: i want the server to automatically redirect all the client browsers to the next page when the teacher wants it to be so... how do i do it?? [i am using JSP/javascript/Java/Tomcat/Eclipse]

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  • How to get SQL Profiler to monitor trigger execution

    - by firedfly
    I have a trace setup for SQL Server Profiler to monitor SQL that is executed on a database. I recently discovered that trigger execution is not included in the trace. After looking through available events for a trace, I do not see any that look like they would include trigger execution. Does anyone know how to setup a trace to monitor the execution of triggers?

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  • Max tcp/ip connections on Windows Server 2008

    - by zendar
    I have .Net service that listens on single port over TCP protocol. Clients connect and then transmit data for some time (from few minutes to several hours). Is there any limit on number of connections on Windows 2008 server? I did not hit any, since now there is up to 50 users. Plan is to have thousands of users, so I'd like to know if there will be problems in future. Edit: As Cloud answered, it seems that there are some limits in some versions of Windows Server 2008. Is there any reference on those limits? I tried Google, but it returns articles on limit on half-bound tcp connections.

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  • SQL Server switch to MySQL/PostgreSQL for startup?

    - by chopps
    I just checked out the licensing for SQL Server and well...i can't afford it since im funding this project myself. I have been tinkering with MySQL and PostgreSQL a bit the past few weeks and at this point I can't really decide which to go with. MySQL has a large user base and lots of people using it so finding out how to do various items will not be to hard o find. I will be using ASP.NET with this project. Anyone have experience going from SQL Server to either of these databases? Is one stronger than the other? Thoughts?

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  • SQL Server mirroring connection doesnt work

    - by StNickolas
    I have 2 servers srv-erp1 and srv-erp3. I made them mirror on each other. All setup is done by lots of tutorials and examples. But when I call ALTER DATABASE MIRROR_TEST SET PARTNER = 'TCP://srv-erp3:5022' It`s response is: The server network address "TCP://srv-erp3:5022" can not be reached or does not exist. Check the network address name and that the ports for the local and remote endpoints are operational. I go to cmd on srv-erp3 and use netstat -an... this port is listening. I go to cmd on srv-erp1 and use telnet srv-erp3 5022...and its ok to connect. All firewalls are turned off. The only difference in config of srvrs is that srv-erp1 is on Windows Server 2003 R2 x64, and srv-erp3 is on Windows 2008 R2 x64 What can be the reason of this problem? Regards, Dmitry.

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