Union select statements horizontally - sql

Question

let's say result of my select statements as follows (I have 5 of those):
Id Animal AnimalId
1 Dog Dog1
1 Cat Cat57
Id Transport TransportId
2 Car Car100
2 Plane Plane500
I'd like to get a result as follows:
Id Animal AnimalId Transport TransportId
1 Dog Dog1
1 Cat Cat57
2 Car Car100
2 Plane Plane500
What I can do is I can crate a tablevariable and specify all possible columns and insert records from each select statement into it. But maybe better solution like PIVOT?
Edit
queries: 1st: Select CategoryId as Id, Animal, AnimalId from Animal
2nd: Select CategoryId as Id, Transport, TransportId from Transport

Answer 1

How about this, if you need them in the same rows, this gets the row_number() for each row and joins on those:
select a.id,
a.aname,
a.aid,
t.tname,
t.tid
from
(
select id, aname, aid, row_number() over(order by aid) rn
from animal
) a
left join
(
select id, tname, tid, row_number() over(order by tid) rn
from transport
) t
on a.rn = t.rn
see SQL Fiddle with Demo
If you don't need them in the same row, then use UNION ALL:
select id, aname, aid, 'Animal' tbl
from animal
union all
select id, tname, tid, 'Transport'
from transport
see SQL Fiddle with Demo
Edit #1, here is a version with an UNPIVOT and PIVOT:
select an_id, [aname], [aid], [tname], [tid]
from
(
select *, row_number() over(partition by col order by col) rn
from animal
unpivot
(
value
for col in (aname, aid)
) u
union all
select *, row_number() over(partition by col order by col) rn
from transport
unpivot
(
value
for col in (tname, tid)
) u
) x1
pivot
(
min(value)
for col in([aname], [aid], [tname], [tid])
) p
order by an_id
see SQL Fiddle with Demo

Answer 2

This would do it for you:
SELECT
ID, field1, field2, '' as field3, '' as field4
FROM sometable
UNION ALL
SELECT
ID, '', '', field3, field4
FROM someothertable

Answer 3

create table Animal (
Animal varchar(50)
,AnimalID varchar(50)
)
create table Transport (
Transport varchar(50)
,TransportID varchar(50)
)
insert into Animal values ('Dog', 'Dog1')
insert into Animal values ('Cat', 'Cat57')
insert into Transport values ('Car', 'Car100')
insert into Transport values ('Plane', 'Plane500')
select ID = 1
,A.Animal
,A.AnimalID
,Transport = ''
,TransportID = ''
from Animal A
union
select ID = 2
,Animal = ''
,AnimalID = ''
,T.Transport
,T.TransportID
from Transport T

Answer 4

To get it in the format you want, select the values you want, and then null (or an empty string) for the other columns.
SELECT
CategoryId as Id,
Animal as 'Animal',
AnimalId as 'AnimalId',
null as 'Transport',
null as 'TransportId'
FROM Animal
UNION
SELECT
CategoryId as Id,
null as 'Animal',
null as 'AnimalId',
Transport as 'Transport',
TransportId as 'TransportId'
FROM Transport
I'm still not sure of the purpose of this, but this should give the output you want.

Answer 5

You shouldn't need to pivot, your results are already fine.
If you want, you can just UNION all 5 statements together in the same format as the first select: ID/Category/CategoryID. Then you'll get one long result set with all 5 sets appended 3 columns wide.
Is that what you want? Or do you need to distinguish between 'categories'?
given your example, try:
Select CategoryId as Id, Animal, AnimalId from Animal
union all
Select CategoryId as Id, Transport, TransportId from Transport
if you want, you can alias the columns like:
Select CategoryId as Id, Animal as category, AnimalId as categoryID from Animal
union all
Select CategoryId as Id, Transport, TransportId from Transport
you really don't need to pivot, just space out your columns like you were thinking initially. You don't pivot to move columns, you pivot to perform an aggregate function over grouped data.