Hi,
~
I am trying to get dups from some data from files which md5sums I
previously calculated
~
Here is my mere mortal SQL
~
SELECT md5, COUNT(md5) AS md5cnt
FROM jdk1_6_0_07_txtfls_md5
WHERE (md5cnt > 1)
GROUP BY md5
ORDER BY md5cnt DESC;
~
and this is what I get:
~
jpk=# SELECT md5, COUNT(md5
Also I know there is a DISTINCT keyword, but I also need to know how
many times the particular data in the column is repeated if it is,
that is why I need to go:
~
SELECT md5, COUNT(md5) AS md5cnt
FROM jdk1_6_0_07_txtfls_md5
WHERE (md5cnt > 1)
GROUP BY md5
ORDER BY md5cnt DESC;
~
Thanks
lbr
Albretch Mueller wrote:
Hi,
~
I am trying to get dups from some data from files which md5sums I
previously calculated
~
Here is my mere mortal SQL
~
SELECT md5, COUNT(md5) AS md5cnt
FROM jdk1_6_0_07_txtfls_md5
WHERE (md5cnt > 1)
GROUP BY md5
ORDER BY md5cnt DESC;
I think you are looking for
thank you Stefan your SQL worked, but still; I am just asking and my
programming bias will certainly show, but aren't you effectivly
"calling" count on the table three times if you go:
~
SELECT md5, COUNT(md5)
FROM jdk1_6_0_07_txtfls_md5
GROUP BY md5
HAVING COUNT(md5) > 1
ORDER BY COUNT(md5) DESC;
"Albretch Mueller" <[EMAIL PROTECTED]> writes:
> thank you Stefan your SQL worked, but still; I am just asking and my
> programming bias will certainly show, but aren't you effectivly
> "calling" count on the table three times if you go:
The system is smart enough to only do the count() once.
> The system is smart enough to only do the count() once.
~
But not smart enough to make a variable you declare point to that
internal variable so that things are clearer/ easier ;-)
~
Thanks
lbrtchx
--
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To make changes to your
On Sat, Aug 30, 2008 at 01:36:25PM -0400, Albretch Mueller wrote:
> > The system is smart enough to only do the count() once.
> ~
> But not smart enough to make a variable you declare point to that
> internal variable so that things are clearer/ easier ;-)
The SQL standard has pretty clear rules
Albretch Mueller wrote:
Also I know there is a DISTINCT keyword, but I also need to know how
many times the particular data in the column is repeated if it is,
that is why I need to go:
~
SELECT md5, COUNT(md5) AS md5cnt
FROM jdk1_6_0_07_txtfls_md5
WHERE (md5cnt > 1)
GROUP BY md5
ORDER BY m
