How to combine multiple SQL queries

Question

I am new to SQL and I am trying to figure out how to get multiple queries into the same result of six items.

The queries I want to combine are:

SELECT TOP 2 * 
FROM tablename 
WHERE (time >= '20180226 21:00' AND channelname = 'A') 
ORDER BY time ASC 

SELECT TOP 2 * 
FROM tablename 
WHERE (time >= '20180226 21:00' AND channelname = 'B') 
ORDER BY time ASC 

SELECT TOP 2 * 
FROM tablename 
WHERE (time >= '20180226 21:00' AND channelname = 'C') 
ORDER BY time ASC 

The only thing that changes is the ChannelName , and I'm sure there is a way to do this but my syntax skills around SQL are to say the least, limited, I'm stuck.

Answer 1

Select * from (SELECT TOP 2 * 
FROM   tablename 
WHERE ( time >= '20180226 21:00' 
        AND channelname = 'A' ) ORDER  BY time ASC )t1
UNION ALL 

Select * from (SELECT TOP 2 * 
FROM   tablename 
WHERE ( time >= '20180226 21:00' 
        AND channelname = 'B' ) ORDER  BY time ASC )t2
UNION ALL

Select * from (SELECT TOP 2 * 
FROM   tablename 
WHERE ( time >= '20180226 21:00' 
        AND channelname = 'C' ) 
ORDER  BY time ASC )t3