Question

WHat i want is concate the static string to dataset i want to add string as min, avg, max to the fetched data. when i m trying give some error?

my query

select m.medTitle, 
min(TIMESTAMPDIFF(SECOND, s.dmtViewStart, s.dmtViewEnd)) playtime
from tbldoctormediatracktest s
left join tblmedia m on s.dmtMedId = m.medId
group by m.medTitle
union all
select m.medTitle, 
avg(TIMESTAMPDIFF(SECOND, s.dmtViewStart, s.dmtViewEnd)) playtime
from tbldoctormediatracktest s
left join tblmedia m on s.dmtMedId = m.medId
group by m.medTitle
union all
select m.medTitle, 
  max(TIMESTAMPDIFF(SECOND, s.dmtViewStart, s.dmtViewEnd)) playtime
from tbldoctormediatracktest s
left join tblmedia m
  on s.dmtMedId = m.medId
group by m.medTitle
order by medTitle,  playtime;

what i am trying.

select concat(m.medTitle,'minimum'), 
  min(TIMESTAMPDIFF(SECOND, s.dmtViewStart, s.dmtViewEnd)) playtime
from tbldoctormediatracktest s
left join tblmedia m
  on s.MedId = m.MedId
group by m.medTitle
union all

select concat(m.medTitle,'average'), 
  avg(TIMESTAMPDIFF(SECOND, s.dmtViewStart, s.dmtViewEnd)) playtime
from tbldoctormediatracktest s
left join tblmedia m
  on s.MedId = m.MedId
group by m.medTitle
union all

select concat(m.medTitle,'maximum'),  
  max(TIMESTAMPDIFF(SECOND, s.dmtViewStart, s.dmtViewEnd)) playtime
from tbldoctormediatracktest s
left join tblmedia m
  on s.MedId = m.MedId
group by m.medTitle
order by medTitle,  playtime

Answer 1

try this:

select playtime,type 
from(
select m.MedId, 
  min(TIMESTAMPDIFF(SECOND, s.dmtViewStart, s.dmtViewEnd)) playtime,
  concat(m.medTitle,' (minimum)') as type
from tbldoctormediatracktest s
left join tblmedia m
  on s.MedId = m.MedId
group by m.MedId
union all

select m.MedId, 
  avg(TIMESTAMPDIFF(SECOND, s.dmtViewStart, s.dmtViewEnd)) playtime,
  concat(m.medTitle,' (average)') as type
from tbldoctormediatracktest s
left join tblmedia m
  on s.MedId = m.MedId
group by m.MedId
union all

select m.MedId,  
  max(TIMESTAMPDIFF(SECOND, s.dmtViewStart, s.dmtViewEnd)) playtime,
  concat(m.medTitle,' (maximum)') as type 
from tbldoctormediatracktest s
left join tblmedia m
  on s.MedId = m.MedId
group by m.MedId)a
order by MedId,  playtime

SQL Fiddle domo 1

SQl Fiddle Demo 2

SQL Fiddle Demo 3