Question

Please help in to merge this 2 queries, I have try using UNION and get error for the result

— First Query

select  p.pegawainama,r.pegawainid, sum(cast(round(r.besarpotongan,0) as int)) as totalpotnondinas 
from 
    rpotongan r
inner join 
    pegawai p on p.pegawainid=r.pegawainid
where 
    r.nojenpot not in (1,7,6,12,14)
    --and r.pegawainid = '6290134A'
    and r.bulan = '3'
    and r.tahun = '2012'
    and p.kodebayar = '152012'
group by
    r.pegawainid,
    p.pegawainama
order by
    p.pegawainama,
    sum(cast(round(r.besarpotongan,0) as int))

— Second Query

select p.pegawainama, r.pegawainid, sum(cast(round(r.besarpotongan,0) as int)) as totalpotdinas from rpotongan r 
inner join 
    pegawai p on p.pegawainid=r.pegawainid
where 
    r.nojenpot in (1,7,6,12,14)
    --and r.pegawainid = '6290134A'
    and r.bulan = '3'
    and r.tahun = '2012'
    and p.kodebayar = '152012'
group by
    r.pegawainid,
    p.pegawainama
order by
    p.pegawainama,
    sum(cast(round(r.besarpotongan,0) as int))

Answer 1

To use UNION, you need to have the same column names, so you can’t have totalpotnondinas in one query and totalpotdinas in the other.

What you can do is call both columns totals and add an additional column that indicates which query was the source of the data. For example:

select p.pegawainama,r.pegawainid, sum(cast(round(r.besarpotongan,0) as int)) as total,
'potnondinas' as src from rpotongan r inner join pegawai p on p.pegawainid=r.pegawainid 
where r.nojenpot not in (1,7,6,12,14) --and r.pegawainid = '6290134A' and r.bulan = '3'
and r.tahun = '2012' and p.kodebayar = '152012' group by r.pegawainid, p.pegawainama
order by p.pegawainama, sum(cast(round(r.besarpotongan,0) as int))

— Second Query

select p.pegawainama, r.pegawainid, sum(cast(round(r.besarpotongan,0) as int)) as total, 
'potdinas' as src from rpotongan r inner join pegawai p on p.pegawainid=r.pegawainid
where r.nojenpot in (1,7,6,12,14) --and r.pegawainid = '6290134A' and r.bulan = '3'
and r.tahun = '2012' and p.kodebayar = '152012' group by r.pegawainid, p.pegawainama
order by p.pegawainama, sum(cast(round(r.besarpotongan,0) as int))

If you omit the synthetic src column, UNION will merge identical results.