groupby query by year - mysql

Question

shipwynum is the primary key for convertship table.
Actually this query getting data correct, for year 2008 only. When i replace 2008 with any other year then also getting data correct for that year. This query display the total records for that year not in TotalCount. TotalCount has always one becoz i have group by with shipwynum.
But i want to get data for 1000 to 2011 separately(instead a particular year like 2008) in this one query and TotalCount should display the counts for every year.
I have this query :=
select
distinct
count(con.shipwynum) as TotalCount,
con.shipwynum,
s.deldat,
s.deldat as DeliveryQuarter,
left(s.deldat,4) as DelYear
from convertship con
left join shipscheduled s on con.shipwynum = s.shipwynum and s.deleted = 'N'
where left(s.deldat,4) > 1000 and left(s.deldat,4) <= 2008 and
left(con.condat,4) > 2008 and
con.deleted = 'N' and
con.wytypid in ('66', '10', '11', '12', '13', '14', '15', '16', '17','18') and
s.wytypid not in ('66', '10', '11', '12', '13', '14', '15', '16', '17','18')
group by con.shipwynum
Any help or ideas would be greatly appreciated.
Thanks a lot.

Answer 1

I think you're trying to count number of rows for each year?
From what i assume,
there is one main table convertship and you want to join convertship to shipscheduled.
Then do the group by on that data according to its left(con.condat,4) value.
select distinct
count(con.shipwynum) as TotalCount,
con.shipwynum,
s.deldat,
s.deldat as DeliveryQuarter,
left(s.deldat,4) as DelYear,
left(con.condat,4) as ConYear
from
convertship con
inner join
shipscheduled s on con.shipwynum = s.shipwynum
where
left(s.deldat,4) > 1000 and
left(s.deldat,4) <= 2008 and
-- left(con.condat,4) > 2008 and
con.deleted = 'N' and
s.deleted = 'N' and
con.wytypid in ('66','10','11','12','13','14','15','16','17','18') and
s.wytypid not in ('66','10','11','12','13','14','15','16','17','18')
group by
left(con.condat,4)
I assume the convertship table is not too big, if not this will not work.

Answer 2

Try:
select count(con.shipwynum) as TotalCount,
con.shipwynum,
s.deldat,
s.deldat as DeliveryQuarter,
left(s.deldat,4) as DelYear
from convertship con
left join shipscheduled s
on con.shipwynum = s.shipwynum and
s.deleted = 'N' and
left(s.deldat,4) > 1000 and
left(s.deldat,4) < left(con.condat,4) and
s.wytypid not in ('66', '10', '11', '12', '13', '14', '15', '16', '17','18')
where con.deleted = 'N' and
con.wytypid in ('66', '10', '11', '12', '13', '14', '15', '16', '17','18') and
group by con.shipwynum, left(s.deldat,4)
Note that since deldat and DeliveryQuarter are neither grouped by nor aggregated, their values in the output will essentially be random (within the DelYear).