How to join multiple SQL statements?

Question

I'm try to combine four of the following SQL statements as one, and I basically want to group by the new combined sql statement by suspension
Using: Oracle 10g
Here's my sql statements/what I've tried but doesn't seem to work:
select *
from
--NBA
select
       decode (t.league_id, 1 , 'NBA') as League,
       t.moniker as First,
       t.Last_name as Last,
       (t.To_Team_Name || ' ' || To_Team_Nickname) as Team,
       count(*) Suspensions
from   customer_data.cd_bk_trans t,
       customer_data.cd_bk_roster r
where  t.player_id = r.player_id
and    t.trans_type_id in (12,13,14)
and    r.status = 'Y'
and    r.league_id = 01
group by t.league_id,t.last_name, t.moniker, t.to_team_name,t.to_team_nickname
order by Suspensions desc
union
--MLB
select
       decode (t.league_id, 7 , 'MLB') as League,
       t.moniker as First,
       t.Last_name as Last,
       (t.from_Team_Name || ' ' || from_Team_Nickname)as Team,
       count(*) Suspensions
from   customer_data.cd_baseball_trans t,
       customer_data.cd_baseball_roster r
where  t.player_id = r.player_id
and    t.comments like '%Susp%'
and    r.status = 'Y'
and    r.league_id = 07
group by t.league_id,t.last_name, t.moniker, t.from_team_name,t.from_team_nickname
order by Suspensions desc
union
--NHL
select
       decode (r.team_id,18, 'NHL') as League,
       t.fn as First,
       t.ln as Last,
       (t.from_Team_Name || ' ' || from_Team_Nickname)as Team,
       count(*) Suspensions
from   customer_data.cd_nhl_trans t,
       customer_data.cd_nhl_roster r
where  t.player_id = r.player_id
and    t.trans_type in (10,11,12)
and    r.status = 'Y'
and    r.league_id = 18
group by r.league_id, t.ln, t.fn, t.from_team_name,t.from_team_nickname
order by Suspensions desc
union
--NFL
select
       decode (t.league_id, 8, 'NFL') as League,
       t.moniker as First,
       t.last_name as Last,
       (t.from_Team_Name || ' ' || from_Team_Nickname)as Team,
       count(*) Suspensions
from   customer_data.cd_football_trans t,
       customer_data.cd_football_roster r
where  t.player_id = r.player_id
and    t.trans_type_id in (24,25)
and    r.status = 'Y'
and    r.league_id = 8
group by  t.league_id, t.last_name, t.moniker,           t.from_team_name,t.from_team_nickname
order by  Suspensions desc
Order by Suspensions desc

Answer 1

Hi,
Remove the ORDER BY clause in all the queries expcept lastone. Then it will work.
You can have the ORDER BY clause in the last query of the inline view. Otherwise it will give the error.
Run the query given below
SELECT *
FROM (
--NBA
SELECT decode(t.league_id, 1, 'NBA') AS league,
t.moniker AS FIRST,
t.last_name AS LAST,
(t.to_team_name || ' ' || to_team_nickname) AS team,
COUNT(*) suspensions
FROM customer_data.cd_bk_trans t, customer_data.cd_bk_roster r
WHERE t.player_id = r.player_id
AND t.trans_type_id IN (12, 13, 14)
AND r.status = 'Y'
AND r.league_id = 01
GROUP BY t.league_id,
t.last_name,
t.moniker,
t.to_team_name,
t.to_team_nickname
UNION
--MLB
SELECT decode(t.league_id, 7, 'MLB') AS league,
t.moniker AS FIRST,
t.last_name AS LAST,
(t.from_team_name || ' ' || from_team_nickname) AS team,
COUNT(*) suspensions
FROM customer_data.cd_baseball_trans t,
customer_data.cd_baseball_roster r
WHERE t.player_id = r.player_id
AND t.comments LIKE '%Susp%'
AND r.status = 'Y'
AND r.league_id = 07
GROUP BY t.league_id,
t.last_name,
t.moniker,
t.from_team_name,
t.from_team_nickname
UNION
--NHL
SELECT decode(r.team_id, 18, 'NHL') AS league,
t.fn AS FIRST,
t.ln AS LAST,
(t.from_team_name || ' ' || from_team_nickname) AS team,
COUNT(*) suspensions
FROM customer_data.cd_nhl_trans t, customer_data.cd_nhl_roster r
WHERE t.player_id = r.player_id
AND t.trans_type IN (10, 11, 12)
AND r.status = 'Y'
AND r.league_id = 18
GROUP BY r.league_id,
t.ln,
t.fn,
t.from_team_name,
t.from_team_nickname
UNION
--NFL
SELECT decode(t.league_id, 8, 'NFL') AS league,
t.moniker AS FIRST,
t.last_name AS LAST,
(t.from_team_name || ' ' || from_team_nickname) AS team,
COUNT(*) suspensions
FROM customer_data.cd_football_trans t,
customer_data.cd_football_roster r
WHERE t.player_id = r.player_id
AND t.trans_type_id IN (24, 25)
AND r.status = 'Y'
AND r.league_id = 8
GROUP BY t.league_id,
t.last_name,
t.moniker,
t.from_team_name,
t.from_team_nickname
ORDER BY suspensions DESC)
ORDER BY suspensions DESC