Re: Bug?
От | P. Dwayne Miller |
---|---|
Тема | Re: Bug? |
Дата | |
Msg-id | 3B749018.F2E84986@espgroup.net обсуждение исходный текст |
Ответ на | Bug? (Martín Marqués <martin@bugs.unl.edu.ar>) |
Список | pgsql-hackers |
Looks like it works as it should. The count(*) function is returning the number of records in each group by condition, or '1' for each row. The count(*) does not return the total number of rows returned by the query. Dwayne Martín Marqués wrote: > What's wrong with this query that used to work great: > > webunl=> SELECT DISTINCT count(*),id_curso AS LINK,titulo AS > TITULO_CARRERA,admin_view_facultades.nombre AS FACULTAD, > webunl-> duracion/12 AS DURACION FROM admin_view, admin_view_facultades > webunl-> WHERE admin_view_facultades.id_carrera=admin_view.id_curso > webunl-> GROUP BY id_curso,titulo,admin_view_facultades.nombre,duracion/12 > webunl-> ORDER BY id_curso ASC LIMIT 20 OFFSET 0 ; > count | link | titulo_carrera | facultad > | duracion > -------+------+-----------------------------+--------------------------------+---------- > 1 | 1 | Ingenieria en informatica | Facultad de Ingenier<ED>a > Qu<ED>mica | 4 > 1 | 2 | Licenciatura en Matematicas | Facultad de Ingenier<ED>a > Qu<ED>mica | 4 > (2 rows) > > webunl=> > > As you can see count(*) is 1, even seeing 2 rows selected. What's wrong? > All that chenged is that I recompiled postgreSQL 7.1.2 with the patch from > the rewriteHandler.c file. > > -- > Porqué usar una base de datos relacional cualquiera, > si podés usar PostgreSQL? > ----------------------------------------------------------------- > Martín Marqués | mmarques@unl.edu.ar > Programador, Administrador, DBA | Centro de Telematica > Universidad Nacional > del Litoral > ----------------------------------------------------------------- > > ---------------------------(end of broadcast)--------------------------- > TIP 4: Don't 'kill -9' the postmaster
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