New feature: selectivity - new attribute in function

Поиск
Список
Период
Сортировка
От pasman pasmański
Тема New feature: selectivity - new attribute in function
Дата
Msg-id BANLkTin+JHdirZG-D0BYJGy=Ty-Zajq6_g@mail.gmail.com
обсуждение исходный текст
Ответы Re: New feature: selectivity - new attribute in function  (Edison So <edison.so2@gmail.com>)
Список pgsql-general
Hi.
It is sometimes hard to tune complicated queries. Maybe add new
attribute to functions returning boolean - selectivity, defining how
big is percent of rows for which the function returns true.

2011/4/15, Edison So <edison.so2@gmail.com>:
> I have a DELL server running Windows server 2003 and Postgres 8.1.
>
> I used pg_dump to back up  a database test:
>
> pg_dump -v -h localhost -p 5432 -U postgres -F c -b -f
> "D:/db_dump/backup.bak" test
>
> The backup was showing the following error.
> .
> pg_dump: dumping contents of table history
> pg_dump: [custom archiver] WARNING: ftell mismatch with expected position --
> ftell used
>
> pg_dump: dumping contents of table history_archive
>
> pg_dump: [custom archiver] WARNING: ftell mismatch with expected position --
> ftell used
>
> pg_dump: dumping contents of table historymetadata
>
> pg_dump: [custom archiver] WARNING: ftell mismatch with expected position --
> ftell used
>
> I was trying to do a Posgres 8.1.4 backup and restored it to Postgres 9.0 on
> a new Dell server running Windows server 2008.
>
> Any clue how to resolve it?
>
> Edison
>
> --
> Edison
>


--
------------
pasman

В списке pgsql-general по дате отправления:

Предыдущее
От: Edison So
Дата:
Сообщение: Re: Help: pg_restore failure
Следующее
От: Edison So
Дата:
Сообщение: Re: New feature: selectivity - new attribute in function