Hi,
I hope theis is the last question for the next time:
1st statement:
SELECT (sum(case when dict.word = 'museum' then 1 else 0 end)
&& sum(case when dict.word = 'immer' then 1 else 0 end)) as qu , dict.url_id
^^ FROM dict, url WHERE url.rec_id = dict.url_id AND url.url LIKE '%%'
AND dict.word in ('museum','immer') GROUP BY dict.url_id HAVING sum(case when
dict.word= 'museum' then 1 else 0 end) &&
sum(case when dict.word = 'immer' then 1 else 0 end) > 0 ^^
The result is:
ERROR: Unable to identify an operator '&&' for types 'int4' and 'int4' You will have to retype this query using
anexplicit cast
but if a do it with :
SELECT (sum(case when dict.word = 'museum' then 1 else 0 end)
|| sum(case when dict.word = 'immer' then 1 else 0 end)) as qu , dict.url_id
^^ FROM dict, url WHERE url.rec_id = dict.url_id AND url.url LIKE '%%'
AND dict.word in ('museum','immer') GROUP BY dict.url_id HAVING sum(case when dict.word =
'museum'then 1 else 0 end) ||
sum(case when dict.word = 'immer' then 1 else 0 end) > 0 ^^
.... all is OK
Whats the different between the logical expression && and || and is there
a way to get && working?
Thanks for any hints. I hope the isn't a stupid question.
Christian
-- Christian Guenther Kunsthistoriker Fax: +49 030 4464152 E-mail:
cg@kunst-und-kultur.deTel:+49 030 4442931 http://kunst-und-kultur.de/ Museen, Kuenstler,
Ausstellungen,Kunstprojekte ....
