Sql: Two Select Statements in One Query

If you like to keep records separate and not do the union.
Try query below

SELECT (SELECT name,
               games,
               goals
        FROM   tblMadrid
        WHERE  name = 'ronaldo') AS table_a,
       (SELECT name,
               games,
               goals
        FROM   tblBarcelona
        WHERE  name = 'messi')   AS table_b
FROM DUAL

The UNION statement is your friend:

SELECT   a.playername, a.games, a.goals
FROM     tblMadrid as a
WHERE    a.playername = "ronaldo"
UNION
SELECT   b.playername, b.games, b.goals
FROM     tblBarcelona as b
WHERE    b.playername = "messi"
ORDER BY goals;

You can union the queries as long as the columns match.

SELECT name,
       games,
       goals
FROM   tblMadrid
WHERE  id = 1
UNION ALL
SELECT name,
       games,
       goals
FROM   tblBarcelona
WHERE  id = 2 

You can combine data from the two tables, order by goals highest first and then choose the top two like this:

MySQL

select *
from (
  select * from tblMadrid
  union all
  select * from tblBarcelona
) alldata
order by goals desc
limit 0,2;

SQL Server

select top 2 *
from (
  select * from tblMadrid
  union all
  select * from tblBarcelona
) alldata
order by goals desc;

If you only want Messi and Ronaldo

select * from tblBarcelona where name = 'messi'
union all
select * from tblMadrid where name = 'ronaldo'

To ensure that messi is at the top of the result, you can do something like this:

select * from (
  select * from tblBarcelona where name = 'messi'
  union all
  select * from tblMadrid where name = 'ronaldo'
) stars
order by name;

select name, games, goals
from tblMadrid where name = 'ronaldo'
union
select name, games, goals
from tblBarcelona where name = 'messi'
ORDER  BY goals 

Using union will help in this case.

You can also use join on a condition that always returns true and is not related to data in these tables.See below

select tmd .name,tbc.goals from tblMadrid tmd join tblBarcelona tbc on 1=1;

You can use UNION in this case

select id, name, games, goals from tblMadrid
union
select id, name, games, goals from tblBarcelona

you jsut have to maintain order of selected columns ie id, name, games, goals in both SQLs

as i see you want most goals in each team you can try this

select name,games,max(goals) as 'most goals' from tblRealMadrid union select name,games,max(goals) as 'most goals' from tblBarcelona