Hi,
I like PostgreSQL for many reasons, one of them is the possibility to
use sub query everywhere. Now I've found where it doesn't support them.
I would like to use a AS (sub query) form.
This is an example:
First the subquery:
select substr(descr, 7, length(descr)-8) from (select string_agg('" int,"',freephone) as descr from (select
distinctfreephone from calendario order by 1 ) as a ) as b; substr
-----------------------------------------------------------------------------------------------------------------------------------------------------------------
"800900420"int,"800900450" int,"800900480" int,"800900570"
int,"800900590" int,"800900622" int,"800900630" int,"800900644"
int,"800900688" int,"800900950" int
(1 row)
Then the wishing one:
itv2=#
select * FROM crosstab('select uscita,freephone,id from calendario order by
1','select distinct freephone from calendario order by 1') -- following AS fails AS (select 'uscita int, ' ||
substr(descr,7, length(descr)-8) from (select string_agg('" int,"',freephone) as descr from
(selectdistinct freephone from calendario order by 1) as a ) as b; );
ERROR: syntax error at or near "select"
LINE 4: ...stinct freephone from calendario order by 1') as (select 'us...
More is on http://paste.scsys.co.uk/198877
I think that AS must evaluate the sub query in advance.
It could be possible to have such behavior?
Best regards, \ferz
