Dear gurus !
I have a table of phone calls , 2 fields : CALL_START DATE ,
CALL_END DATE .
I need an SQL statement or a PL/SQL block to calculate the maximum
number of SIMULTANIOUS phone conversations.
Consider there are 4 calls ,
one started at 12:10 and ended at 12:40
second started at 12:15 and ended at 12:30
third started at 12:25 and ended at 12:55.
fourth started at 12:45 and ended at 12:47.
So the first 3 calls are simultanious , for example they overlap at 12:28 ,
i.e. there are 3 pairs of persons having phone conversation at 12:28.
The third and fourth calls are simultanious at 12:46 ,i.e. there are 2 pairs
of persons having phone conversation at 12:46.
So , i need the maximum number of concurrent phone conversations in my
table.
Thanks a lot !!!
Please help !!!
Thanks a lot in advance !
Andrey.
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Please see the official ORACLE-L FAQ: http://www.orafaq.com
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Author: Andrey Bronfin
INET: andreyb_at_elrontelesoft.com
Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051
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Received on Wed Aug 15 2001 - 04:36:04 CDT
