Commands crystal 2008

Question

i am using a UNION query in a command prompt, and i receive the following error how do i fix this?
ALL UNION, INTERSECT OR EXCEPT QUERIES MUST HAVE EQUAL NUMBER OF EXPRESSIONS ON THEIR TARGET LISTS.
select wc_name, complete_date, part_number, lot_name, shift, complete_quantity, partweight_f , plantcode_s
from (
select
wc_name, convert(varchar, complete_time,101) complete_date, complete_time,
complete_quantity, partweight_f, lot1.part_number, lot1.lot_name, plantcode_s
from tracked_object_history toh join uda_workcenter UWC on toh.wc_key = UWC.object_key
left join lot lot1 on tobj_key = lot1.lot_key
left join part part1 on part1.part_number = lot1.part_number
left join uda_part UPart on upart.object_key = part_key
where convert(varchar, complete_time,101) between {?Date_Begin} and {?Date_End}) ab
join
(select
stationname, shift,
convert(varchar, starttime,101) sh_startdate, convert(varchar, stoptime,101) sh_stopdate,
starttime, stoptime
from dbo.DC_shiftDCS where stoptime is not null ) cd
on ab.wc_name = cd.stationname and ab.complete_time between cd.starttime and cd.stoptime
union all
select wc_name, complete_date, part_number, lot_name, shift, complete_quantity, partweight_f , plantcode_s
from (
select
wc_name, convert(varchar, complete_time,101) complete_date, complete_time,
complete_quantity, partweight_f, lot1.part_number, lot1.lot_name, plantcode_s
from tracked_object_history toh join uda_workcenter UWC on toh.wc_key = UWC.object_key
left join lot lot1 on tobj_key = lot1.lot_key
left join part part1 on part1.part_number = lot1.part_number
left join uda_part UPart on upart.object_key = part_key
where convert(varchar, complete_time,101) between {?Date_Begin} and {?Date_End}) ab
join
(select
stationname, shift,
convert(varchar, starttime,101) sh_startdate, convert(varchar, stoptime,101) sh_stopdate,
starttime, stoptime
from dbo.DC_shiftDCS where stoptime is null) cd
on ab.wc_name = cd.stationname and ab.complete_time >= cd.starttime
union all
select workcenter, LMT, partnumber, lotnumber,  shift, scrap_qty,partweight_f, plantcode_s, scrapcode
from (
select workcenter, convert(varchar, scrap.last_modified_time, 101) LMT, scrap.last_modified_time,
partnumber, lotnumber, scrap.quantity scrap_qty,  plantcode_s, partweight_f, scrapcode
from dc_scrappartsdcs scrap left join part on partnumber = part_number
left join uda_part upart on part_key = upart.object_key
join work_center on workcenter  = wc_name
join uda_workcenter uwc on wc_key = uwc.object_key
where convert(varchar, scrap.last_modified_time,101) between {?Date_Begin} and {?Date_End}
) ab
join (
select stationname, shift, starttime, stoptime from dc_shiftdcs
where stoptime is not null) cd on
ab.workcenter = cd.stationname and  ab.last_modified_time between cd.starttime and cd.stoptime
union all
select workcenter, LMT, partnumber, lotnumber,  shift, scrap_qty,partweight_f, plantcode_s, scrapcode
from (
select workcenter, convert(varchar, scrap.last_modified_time, 101) LMT, scrap.last_modified_time,
partnumber, lotnumber, scrap.quantity scrap_qty,  plantcode_s, partweight_f, scrapcode
from dc_scrappartsdcs scrap left join part on partnumber = part_number
left join uda_part upart on part_key = upart.object_key
join work_center on workcenter  = wc_name
join uda_workcenter uwc on wc_key = uwc.object_key
where convert(varchar, scrap.last_modified_time,101) between {?Date_Begin} and {?Date_End}
) ab
join (
select stationname, shift, starttime, stoptime from dc_shiftdcs
where stoptime is null) cd on
ab.workcenter = cd.stationname and  ab.last_modified_time >= cd.starttime

Answer 1

I can't read such a long query as one long line, so I didn't.  (If you'd like to re-post it with logical line breaks, I'd be happy to read it...)  But the error sounds like the number of columns on each side of the UNION is not the same.  In other words, you can't to this:
select a, b, c from table1
UNION
select d, e from table2
It would have to be two OR three columns from both tables.  Furthermore, the data types of corresponding columns should be the same.
HTH,
Carl