Try this:
select distinct badge.id,convert( varchar,eventime,110) as date,count(*)
from events, badge where
events.cardnum = badge.id and devid = '1' and
convert( varchar, events.eventime, 110) BETWEEN '$startdate' and 'enddate'
and type = '1'
group by date
In MySQL you don't need to specify a field for count(). And you should have to convert the eventime field twice, you should be able to reference the calc field in the group by.
On Apr 21, 2004, at 2:19 PM, Adam Williams wrote:
Yeah I basically had that with my previous SQL statement, I was grouping
by event.cardnum instead of counting the cardnums by date. I think what
I'm trying to do is beyond the scope of SQL and I'll have to write some
PHP to take the SQL statement results and feed them into an array and
count the distinct cardnums for each date and then spit it all into an
html table. thanks
On Wed, 21 Apr 2004, Daniel Clark wrote:
AND: any count >=1 shows they came in that day.
How about:
SELECT convert( varchar,eventime,110) as date from events, badge,
count(convert( varchar,eventime, 110)) as count
WHERE events.cardnum = badge.id and devid = '1' and
convert( varchar, events.eventime, 110) BETWEEN '$startdate' and 'enddate'
AND type = '1'
GROUP BY convert( varchar,events.eventime, 110), badge
I'm using some proprietary software/hardware where when a visitor swipes
their entry card, it is recorded in a mssql 2000 server. My boss wants a
count of unique vistors for a range of dates. So, I need to have it give
a count of unique vistors, meaning that I need to count all vists for a
day as one visit (because if they go outside to smoke and come back and
swipe their card again to get in, each one is a separate visit, but i need
to count all visits by each person as one visit since i just want to know
if they came at all each day, not how many times they came in).
This is my SQL statement:
select distinct count(convert( varchar,eventime, 110)) as count,
convert( varchar,eventime,110) as date from events, badge wher
events.cardnum = badge.id and devid = '1' and
convert( varchar, events.eventime, 110) BETWEEN '$startdate' and 'enddate'
and type = '1' group by convert( varchar,events.eventime, 110)
for reference, devid = '1' is the hardware device, where everytime it
triggers, it means someone swiped their card to get in, and type = '1'
means patron (because we have a type = 2 that is for staff and we jsut
want to know how many patrons visited)
When I execute this statement, its returning the result for each date of
the total number of card swipes (so if a person comes in twice on a date,
its recording it as 2 swipes, but I just need to know that they came to
the building at all on this date, so I just need it to register that there
was a count of atleast one for this card that was swiped)
any suggestions? thanks
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