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By: a guest on
Jul 20th, 2012 | syntax:
None | size: 1.77 KB | hits: 8 | expires: Never
SQL: Dynamic view with column names based on column values in source table
ID User Description
0 James This is a support ticket
1 Fred This is a ticket too
ID TicketID Label Value
0 0 Engineer Scott
1 1 Engineer Dale
2 0 Manu Dell
3 1 Manu HP
4 0 OS Windows
5 1 OS Linux
ID User Description Engineer Manu OS
1 James This is a support ticket Scott Dell Windows
2 Fred This is a ticket too Dale HP Linux
select id, [user], [engineer], [manu], [OS]
from
(
select t.id
, t.[user]
, p.ticketid
, p.label
, p.value
from tickets t
inner join properties p
on t.id = p.ticketid
) x
pivot
(
min(value)
for label in ([engineer], [manu], [OS])
) p
DECLARE @cols AS NVARCHAR(MAX),
@query AS NVARCHAR(MAX);
select @cols = STUFF((SELECT distinct ',' + QUOTENAME(p.label)
from tickets t
inner join properties p
on t.id = p.ticketid
FOR XML PATH(''), TYPE
).value('.', 'NVARCHAR(MAX)')
,1,1,'')
set @query = 'SELECT id, [user], ' + @cols + ' from
(
select t.id
, t.[user]
, p.ticketid
, p.label
, p.value
from tickets t
inner join properties p
on t.id = p.ticketid
) x
pivot
(
min(value)
for label in (' + @cols + ')
) p '
execute(@query)