Whats the difference between these 2 hd's

Western Digital Caviar SE16 WD5000AAKS 500GB 7200 RPM SATA 3.0Gb/s Hard Drive - OEM
and
Western Digital Caviar SE16 WD5000KSRTL 500GB 7200 RPM SATA 3.0Gb/s Hard Drive - Retail
besides $150

No, not really. All that's required is a bare drive. Bolt it to one of the drive sleds and slip it in. All you need do after that is prep the drive:
Extended Hard Drive Preparation
1. Open Disk Utility in the Utilities folder
2. After DU loads select your hard drive (this is the entry with the mfgr.'s ID and size) from the left side list. Note the SMART status of the drive in DU's status area. If it does not say "Verified" then the drive is failing or has failed and will need replacing. Otherwise, click on the Partition tab in the DU main window.
3. Set the number of partitions from the dropdown menu (use 1 partition unless you wish to make more.) Set the format type to Mac OS Extended (Journaled.) Click on the Partition button and wait until the volume(s) mount on the Desktop.
4. Select the volume you just created (this is the sub-entry under the drive entry) from the left side list. Click on the Erase tab in the DU main window.
5. Set the format type to Mac OS Extended (Journaled.) Click on the Options button, check the button for Zero Data (single pass) and click on OK to return to the Erase window.
6. Click on the Erase button. The format process will take 30 minutes to an hour or more depending upon the drive size.
Repeat Steps 4 and 5 for each volume (partition) you created (if more than one.)

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Whats the difference between these two queries ? - for tuning purpose

Whats the difference between these two queries ?
I have huge amount of data for each table. its takeing such a long time (>5-6hrs).
here whice one is fast / do we have any other option there apart from listed here....
QUERY 1:
SELECT --<< USING INDEX >>
      field1, field2, field3, sum( case when field4 in (1,2) then 1 when field4 in (3,4) then -1 else 0 end)
    FROM
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    WHERE
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    GROUP BY
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    HAVING
      sum( case when field4 in (1,2) then 1 when field4 in (3,4) then -1 else 0 end) <> 0;
QUERY 2:
   SELECT --<< USING INDEX >>
      field1, field2, field3, sum( decode(field4, 1, 1, 2, 1, 3, -1, 4, -1 ,0))
    FROM
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    WHERE
     condition1 and
     condition2 and
     condition3 and
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      sum( decode(field4, 1, 1, 2, 1, 3, -1, 4, -1 ,0)) <> 0;
[pre]

My feeling here is that simply changing join syntax and case vs decode issues is not going to give any significant improvement in performance, and as Tubby points out, there is not a lot to go on. I think you are going to have to investigate things along the line of parallel query and index vs full table scans as well any number of performance tuning methods before you will see any significant gains. I would start with the Performance Manual as a start and then follow that up with the hard yards of query plans and stats.
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First of all to make things clear I want to mention this first that I lives in Pakistan and Adobe doesn't support my region so in order to buy the Adobe Photoshop CC I have to contact the authorized resellers, after contacting them and asking for a invoice proposal for Adobe Photoshop CC, they send me several invoice proposals (per user team liscense). But I just got in a trouble as these proposals are offering Photoshop CC different versions so its like kinda making me double mind, i am just confused which to buy as prices are differ too and kinda noticeable. As for making my intentions clear I also wanna mention that I am looking for Single App Liscense i mean i just wanna buy Photoshop CC thats it. But for sure its not gonna be that photography version nor student one. Also i wanna know that whats the difference between these two versions and also tell me the pros and cons.
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Link two:
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I've attached screenshots too

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My feeling here is that simply changing join syntax and case vs decode issues is not going to give any significant improvement in performance, and as Tubby points out, there is not a lot to go on. I think you are going to have to investigate things along the line of parallel query and index vs full table scans as well any number of performance tuning methods before you will see any significant gains. I would start with the Performance Manual as a start and then follow that up with the hard yards of query plans and stats.
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Andre

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hi,
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Homework question?
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Probably nothing of any consequence. Some places can just negotiate better deals with suppliers. Or one of a million other factors that can affect price is in play here.
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2. Under: C:\usr\sap\JXX\JC00\j2ee\cluster\server0\apps\sap.com\irj\servlet_jsp\irj\root\WEB-INF\portal\portalapps
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Hi Roy,
The one at this location
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--------No.202

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Hello
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Thanks

Your if condition wherein you do
v_transcode <> 'A' and v_transcode <> 'C' and v_transcode <> 'D'.
I would think this is more better in terms of performance, because if the first clause (v_transcode <> 'A') fails nothing else needs to be evaluated, and it can skip the if condition there itself,
but in case of
v_transcode not in ('A', 'C','D'),
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--Bhargavi

Whats the difference between these 2 hd's

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