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LynneSin Donating Member (1000+ posts) Send PM | Profile | Ignore Tue Sep-20-05 10:50 AM
Original message
SQL experts help again please
I'm pulling a list of about 10k files but I want to narrow my search to only those files that show up 20 or more times on the list.

Didn't have counting in my class any help?

Any recommendations?
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ikri Donating Member (1000+ posts) Send PM | Profile | Ignore Tue Sep-20-05 10:56 AM
Response to Original message
1. You need to group
If, for example, you wanted a list of company names that appear more than 20 times in a table you'd use:

Select d.CompanyName, count(*) as 'Total'
from exampletable as d
group by d.CompanyName
having count(*) > 20
order by count(*) desc

That should work.
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LynneSin Donating Member (1000+ posts) Send PM | Profile | Ignore Tue Sep-20-05 11:12 AM
Response to Reply #1
3. the group command, damnit
forgot about that.

It'll have to wait until after lunch

Thanks!!!
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aePrime Donating Member (676 posts) Send PM | Profile | Ignore Tue Sep-20-05 10:58 AM
Response to Original message
2. You can try something similar to:
SELECT files, COUNT(*) AS count FROM table GROUP BY file HAVING count >= 20
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no name no slogan Donating Member (1000+ posts) Send PM | Profile | Ignore Tue Sep-20-05 11:14 AM
Response to Original message
4. databases are for wussies
If you can't store it in a plain-text flat file, it ain't worth storing.
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kick-ass-bob Donating Member (1000+ posts) Send PM | Profile | Ignore Tue Sep-20-05 11:14 AM
Response to Reply #4
5. on the mainframe!
you forgot 'on the mainframe'

:D
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no name no slogan Donating Member (1000+ posts) Send PM | Profile | Ignore Tue Sep-20-05 11:17 AM
Response to Reply #5
6. d'oh!
and from the command prompt too, dammit!

I like to run this little baby on the Solaris b0xen at work-- but only when I'm logged in as root:

rm -r /

You should see the look on the tech guys faces when they try to log into the machines. It's priceless!
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kick-ass-bob Donating Member (1000+ posts) Send PM | Profile | Ignore Tue Sep-20-05 11:20 AM
Response to Reply #6
7. LOL!!
I love that game!

:rofl:
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LynneSin Donating Member (1000+ posts) Send PM | Profile | Ignore Tue Sep-20-05 11:20 AM
Response to Reply #4
8. I work with a plain-text flat file
Built a database program around it

SO THERE!!!

I'm not a wussy

:woohoo:
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no name no slogan Donating Member (1000+ posts) Send PM | Profile | Ignore Tue Sep-20-05 11:41 AM
Response to Reply #8
9. Betcha can't do that with punchcards, though
monitors are for the weak. Give me a cardreader and a keypunch ANY day.

My hand-punched Assembler routine can whip your pansy-assed SQL query's butt. Especially once I get my System 360 warmed up.

Kids these days...
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LynneSin Donating Member (1000+ posts) Send PM | Profile | Ignore Tue Sep-20-05 12:49 PM
Response to Reply #9
10. Now you're just dating yourself
:P
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no name no slogan Donating Member (1000+ posts) Send PM | Profile | Ignore Tue Sep-20-05 01:05 PM
Response to Reply #10
12. No, I actually have a girlfriend now
My days of self-dating are in the past, thankyouverymuch :silly:
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billyskank Donating Member (1000+ posts) Send PM | Profile | Ignore Tue Sep-20-05 12:50 PM
Response to Original message
11. Not much info there
but you need something like

SELECT foo,bar, COUNT(*)
FROM baz,qux
WHERE quux
GROUP BY yada,yada,yada
HAVING COUNT (*) >= 20.
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