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  • Eliminate duplicates in SQL query

    - by ewdef
    i have a table with 6 fields. the columns are ID, new_id price,title,Img,Active. I have datawhich is duplicated for the price column. When I do a select i want to show only distinct rows where new_id is not the same. e.g.- ID New_ID Price Title Img Active 1 1 20.00 PA-1 0X4... 1 2 1 10.00 PA-10 0X4... 1 3 3 20.00 PA-11 0X4... 1 4 4 30.00 PA-5 0X4... 1 5 9 20.00 PA-99A 0X4... 1 6 3 50.00 PA-55 0X4... 1 When the select statement runs, only rows with ID (1,4,9,6) should show. Reason being the new_ID with the higher price should show up. How can i do this?

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  • About memory cache of Linux

    - by cheneydeng
    I'm running a python script to do some statistics and the actually memory which used is low,about 10%.And no other process cost more memory.However,when i use free -m and it shows that almost 95% memory has been used.The point is that my script should do a lot of read from files,so i wonder if there's any mechanism of Linux memory cache that caused the problem?echo 1 >> /proc/sys/vm/drop_caches works,but it seems manually.How can i reduce the memory cost and doesn't make a bad effect on reading files?

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  • On-call EC2 System Administrator

    - by Ball
    Is there a company that can respond to critical alerts for our EC2-based web application? Does such a service exist? If not, is there a place where we can find individuals who are willing to do 5-10 hrs of work a month responding to issues? Thanks. I know this is not a technical question, but I know it's a useful question for many companies and I'm not sure where else to ask.

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  • Is it possible that an insert would use parallelism?

    - by Lieven Cardoen
    In what situation can inserting a simple record (the table has got some 10 columns, two of them are xml) use parallelism? CREATE TABLE [dbo].[PackageSessions]( [PackageSessionId] [int] IDENTITY(1,1) NOT NULL, [PackageId] [int] NOT NULL, [UserId] [int] NOT NULL, [StartDateTime] [datetime] NULL, [StopDateTime] [datetime] NULL, [Score] [float] NOT NULL, [ScoreMax] [float] NOT NULL, [CompletionStatus] [int] NOT NULL, [ReviewPlayerContextId] [int] NOT NULL, [PlayerContextId] [int] NOT NULL, [ReducedScore] [float] NOT NULL, [ReducedScoreMax] [float] NOT NULL, [PackageSnapShot] [xml] NULL, [InterfaceLanguageId] [int] NOT NULL, [Data] [xml] NULL, [PackageSessionLanguageId] [int] NOT NULL, CONSTRAINT [PackageSessions_PK] PRIMARY KEY CLUSTERED ( [PackageSessionId] ASC )WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY] ) ON [PRIMARY]

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  • Firefox needs 1GB of RAM

    - by Davincho
    I work as a webdeveloper and for that I'm using firefox with firebug. I have noticed in the last time that after 2 hours of work, the firefox.exe process needed more than 1 GB of my working memory! Even if I close the window, the process still remains in the taskmanager and the only thing I can do is to 'kill' the process. Any suggestions? I'm using Windows7 with 2GB RAM, FF 3.6.8 y normally i have opened 10 tabs.

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  • mutt isn't sending large messages

    - by Guy
    I'm using mutt in the following way: echo <MESSAGE> | mutt -s <SUBJECT> -- <TO-ADDR> This usually works when I try small message (messages with ~10 lines in the body). But when trying very large message (a message with ~200 lines) the email just isn't received. Any ideas?

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  • Anyone tried boosting Windows performance by putting Swap File on a Flash drive?

    - by Clay Nichols
    Windows Vista introduced ReadyBoost which lets you use a Flash drive as a third (after RAM and HD) type of memory. It occurred to me that I could boost peformance on an old PC here w/ Win XP (32 bit, max'd at 4GB RAM) by putting it's swap file (page file) on a flash drive. (Now, before anyone comments: apparently Flash drives (10-30MB/s transfer rates) are slower than HDD (100+ MB/s) (I'm asking that as a separate question on this forum).

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  • How do I disable animations in Preview in Lion?

    - by c00kiemonster
    For example, open up a pdf and set view to two pages and hit arrow key up/down. Is there a way to get rid of the animation? Preview feels really snappy and fast, and to have animations like that just spoils all the fun. Might seem like a proper first world problem, especially if you're just a casual user of pdfs. But I frequently have 10+ pdfs open for referencing purposes (that is, a lot of flicking back and fourth), and the animation just drives me nuts.

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  • Sql Server huge tables with no rows

    - by Mike Gates
    I have a Sql Server database that has a few tables with zero row count but take up a combined 10 GB of space. I can see this by doing right-click/properties on the tables in question (data space is huge, between 1 and 6 GB, and row count is zero on these tables). I have no clue what could be causing this as I would assume zero rows would mean nearly zero space taken. Any ideas?

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  • Can Amazon VMs be used as Active Directory domain controllers?

    - by mrdenny
    I've got a client who wants to move his companies servers off site. As he is only a 10 person company I'm looking for some pretty in-expensive options. One option is the smallest of the Amazon cloud machines. The question becomes can I make one of these machines a domain controller? Cost wise the Amazon machine is cheaper than the power costs of keeping a server (or a PC) up and running in his home office 24x7 thanks to the high cost of power in Southern California.

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  • How do I password protect my printer in Windows 7?

    - by Dillie-O
    I have two young kids who have gotten rather computer saavy. They love playing their games, especially when it allows them to print out awards or coloring pages. Unfortunately this means that in the time it takes to refresh my cup of coffee, they can easily drop a 10 page document into the printer queue, and my printer ink runs out rather fast. How would I setup some kind of password protection on the printing, so that I would have to do some kind of final approval before they get their printouts?

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  • Increase/refresh the size of the FreeBSD's main partition

    - by Lucas
    I am using VirtualBox and have my FreeBSD mounted on a virtual drive, which recently ran out of space (10 GB) so I have increased the Virtual Drive size up to the 15 GB - started my FreeBSD and its still out of space, because it doesnt "refresh" the main partition size: # df -h Filesystem Size Used Avail Capacity Mounted on /dev/ada0p2 9.3G 9.3G -711M 108% / devfs 1.0k 1.0k 0B 100% /dev How can I set the partition size to the virtual drive size?

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  • Apache on Ubuntu very slow on inital calls, very fast afterwards

    - by papakost
    I own an Ubuntu 10 VPS Server with Apache 2 hosting a Magento website. The first hit to the site from any client takes about 15-20 sec, while the subsequent hits from the same client take 0-1 sec. I suppose it doesn't have to do with Magento caching, because this happens also when the first call is on a very light page and the next calls are on heavy ones. Does anyone have an idea on what is going wrong here?

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  • SQL Server (TSQL) - Is it possible to EXEC statements in parallel?

    - by Investor5555
    SQL Server 2008 R2 Here is a simplified example: EXECUTE sp_executesql N'PRINT ''1st '' + convert(varchar, getdate(), 126) WAITFOR DELAY ''000:00:10''' EXECUTE sp_executesql N'PRINT ''2nd '' + convert(varchar, getdate(), 126)' The first statement will print the date and delay 10 seconds before proceeding. The second statement should print immediately. The way T-SQL works, the 2nd statement won't be evaluated until the first completes. If I copy and paste it to a new query window, it will execute immediately. The issue is that I have other, more complex things going on, with variables that need to be passed to both procedures. What I am trying to do is: Get a record Lock it for a period of time while it is locked, execute some other statements against this record and the table itself Perhaps there is a way to dynamically create a couple of jobs? Anyway, I am looking for a simple way to do this without having to manually PRINT statements and copy/paste to another session. Is there a way to EXEC without wait / in parallel?

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  • Will terminal keep executing a command after i disconnect my VNC session?

    - by Fer
    I established a remote session in a MacOSX (10.6.8) from my PC (Windows7) using VNC. I initiated terminal and it is currently executing a task that will take probably 1 day before completing. Should I expect that even if I disconnect the VNC session, Terminal will keep running after I disconnect? I assume so since I used VNC just to remotely start the process but want to double check. Can anybody tell me if I am wrong?

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  • ntp.conf sync to local machines

    - by anonym
    I have 2 linux machines, they do not have internet connectivity or any other means of getting an external clock. I need one of them to act as the "master"/server and the other machine to sync it's clock to that server. It's not important that the time is correct, it's only important that the time is the same on these 2 machines. So, give I have a server (192.168.1.10) and a client (192.168.1.11), how do I set up /etc/ntp.conf on these 2 machines respectivly ?

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  • Can I autofill a pattern that changes periodically?

    - by user234479
    I am trying to create an autofill similar to below, essentially requiring excel to realise that every 3 cells down the row number being referenced increases by 10. I have tried but it does not seem to recognise the pattern. Is there any way around this? ='Book1'!$A1:$D17 ='Book1'!$A1:$D17 ='Book1'!$A1:$D17 ='Book1'!$A11:$D17 ='Book1'!$A11:$D17 ='Book1'!$A11:$D17 ='Book1'!$A21:$D17 ='Book1'!$A21:$D17 ='Book1'!$A21:$D17

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  • Using JS script for "raining images". Can't seem to hide pre-loaded image

    - by user1813605
    I am trying to hide an image in a script pre-loading on the page. Below script makes images "rain" down the screen onClick. It functions well, but it displays the pre-loaded image itself on the page before the button is clicked. I'm trying to hide the image until the button is pressed. If anyone has any insight on how to hide the image until the function dispenseMittens() runs, I'd be eternally grateful :) Thanks! <script language="javascript"> var pictureSrc = 'mitten.gif'; //the location of the mittens var pictureWidth = 40; //the width of the mittens var pictureHeight = 46; //the height of the mittens var numFlakes = 10; //the number of mittens var downSpeed = 0.01; var lrFlakes = 10; var EmergencyMittens = false; //safety checks. Browsers will hang if this is wrong. If other values are wrong there will just be errors if( typeof( numFlakes ) != 'number' || Math.round( numFlakes ) != numFlakes || numFlakes < 1 ) { numFlakes = 10; } //draw the snowflakes for( var x = 0; x < numFlakes; x++ ) { if( document.layers ) { //releave NS4 bug document.write('<layer id="snFlkDiv'+x+'"><img src="'+pictureSrc+'" height="'+pictureHeight+'" width="'+pictureWidth+'" alt="*" border="0"></layer>'); } else { document.write('<div style="position:absolute;" id="snFlkDiv'+x+'"><img src="'+pictureSrc+'" height="'+pictureHeight+'" width="'+pictureWidth+'" alt="*" border="0"></div>'); } } //calculate initial positions (in portions of browser window size) var xcoords = new Array(), ycoords = new Array(), snFlkTemp; for( var x = 0; x < numFlakes; x++ ) { xcoords[x] = ( x + 1 ) / ( numFlakes + 1 ); do { snFlkTemp = Math.round( ( numFlakes - 1 ) * Math.random() ); } while( typeof( ycoords[snFlkTemp] ) == 'number' ); ycoords[snFlkTemp] = x / numFlakes; } //now animate function mittensFall() { if( !getRefToDivNest('snFlkDiv0') ) { return; } var scrWidth = 0, scrHeight = 0, scrollHeight = 0, scrollWidth = 0; //find screen settings for all variations. doing this every time allows for resizing and scrolling if( typeof( window.innerWidth ) == 'number' ) { scrWidth = window.innerWidth; scrHeight = window.innerHeight; } else { if( document.documentElement && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) ) { scrWidth = document.documentElement.clientWidth; scrHeight = document.documentElement.clientHeight; } else { if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) { scrWidth = document.body.clientWidth; scrHeight = document.body.clientHeight; } } } if( typeof( window.pageYOffset ) == 'number' ) { scrollHeight = pageYOffset; scrollWidth = pageXOffset; } else { if( document.body && ( document.body.scrollLeft || document.body.scrollTop ) ) { scrollHeight = document.body.scrollTop; scrollWidth = document.body.scrollLeft; } else { if( document.documentElement && ( document.documentElement.scrollLeft || document.documentElement.scrollTop ) ) { scrollHeight = document.documentElement.scrollTop; scrollWidth = document.documentElement.scrollLeft; } } } //move the snowflakes to their new position for( var x = 0; x < numFlakes; x++ ) { if( ycoords[x] * scrHeight > scrHeight - pictureHeight ) { ycoords[x] = 0; } var divRef = getRefToDivNest('snFlkDiv'+x); if( !divRef ) { return; } if( divRef.style ) { divRef = divRef.style; } var oPix = document.childNodes ? 'px' : 0; divRef.top = ( Math.round( ycoords[x] * scrHeight ) + scrollHeight ) + oPix; divRef.left = ( Math.round( ( ( xcoords[x] * scrWidth ) - ( pictureWidth / 2 ) ) + ( ( scrWidth / ( ( numFlakes + 1 ) * 4 ) ) * ( Math.sin( lrFlakes * ycoords[x] ) - Math.sin( 3 * lrFlakes * ycoords[x] ) ) ) ) + scrollWidth ) + oPix; ycoords[x] += downSpeed; } } //DHTML handlers function getRefToDivNest(divName) { if( document.layers ) { return document.layers[divName]; } //NS4 if( document[divName] ) { return document[divName]; } //NS4 also if( document.getElementById ) { return document.getElementById(divName); } //DOM (IE5+, NS6+, Mozilla0.9+, Opera) if( document.all ) { return document.all[divName]; } //Proprietary DOM - IE4 return false; } function dispenseMittens() { if (EmergencyMittens) { window.clearInterval(EmergencyMittens); } else { EmergencyMittens = window.setInterval('mittensFall();',100); } } </script>

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  • Using ssd intensively. Should we worry?

    - by vvavepacket
    I'm currently using conventional HDDs like the 5200 rpms, browsing a lot, my folder and files are scattered, torrenting always and I'm not fond of optimization like disabling cache, cleaning temp Files , etc. My question is, given the above conditions (no disable of cache, seeding always in torrent, downloading torrent) is it safe to use SSD? I'm pretty worried about cycles but I read an article wherein it says its safe since it will usually wear out for 10 years given that you always write heavily and continuously. Thanks

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