Re: Tough SQL Problem
- From: Jared Still <jkstill@xxxxxxxxx>
- To: Mark.Bobak@xxxxxxxxxxxxxxx
- Date: Wed, 8 Feb 2006 10:59:19 -0800
Adding just a bit to Mark's reply, the fact that you see '1' 5 times
consecutively does not mean that it was called 5 time consecutively.
Mark implied that, danced all around it and flirted a bit with it,
but didn't come right out and say it. ;)
Jared
On 2/8/06, Bobak, Mark <Mark.Bobak@xxxxxxxxxxxxxxx> wrote:
>
> Hmm....just the one column? You need another column, by which you can
> establish order. There is no order inherent in a relational table. So,
> if you had another column, say, sequence_number, or a date_time_col or
> something, you could order by that, and relative to that, determine the
> largest consecutive occurances of '1'. (I'm thinking lag()/lead() here,
> off the top of my head.)
>
> I would argue that without another column to order by, it's not
> possible, cause there's no way to determine the order of the rows.
>
> -Mark
>
>
> --
> Mark J. Bobak
> Senior Oracle Architect
> ProQuest Information & Learning
>
> "There are 10 types of people in the world: Those who understand
> binary, and those who don't."
>
> -----Original Message-----
> From: oracle-l-bounce@xxxxxxxxxxxxx
> [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Ethan Post
> Sent: Wednesday, February 08, 2006 12:47 PM
> To: oracle-l
> Subject: Tough SQL Problem
>
> I have a log table that is logging various PLSQL calls. Assume the table
> looks like this...
>
> PROCEDURE_ID
> ==============
> 1
> 2
> 1
> 1
> 1
> 1
> 1
> 2
> 1
> 1
> 2
> 1
>
> Looking at this I can see that the max times 1 was called consecutivley
> is 5. I have no clue how I would do this in SQL without writing a
> function of some sort to keep a count and return the max count. Anyone
> know if this can be done using and built in functions?
>
> - Ethan
> --
> //www.freelists.org/webpage/oracle-l
>
>
>
>
>
--
Jared Still
Certifiable Oracle DBA and Part Time Perl Evangelist
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