Re: simple update queries take a long time - postgres 8.3.1
От | Raymond O'Donnell |
---|---|
Тема | Re: simple update queries take a long time - postgres 8.3.1 |
Дата | |
Msg-id | 47F142AF.1050109@iol.ie обсуждение исходный текст |
Ответ на | Re: simple update queries take a long time - postgres 8.3.1 (mark <markkicks@gmail.com>) |
Ответы |
Re: simple update queries take a long time - postgres 8.3.1
Re: simple update queries take a long time - postgres 8.3.1 |
Список | pgsql-general |
On 31/03/2008 20:51, mark wrote: > can you explain what the numbers mean in the EXPLAIN ANALYZE? > (cost=0.00..8.46 rows=1 width=1073) (actual time=0.094..0.161 rows=1 > loops=1) It's worth reading through the docs at that reference in my previous email - it's well explained there. As I understand it, "cost" signifies the planner's estimate of how long the query will take, in terms of disk page fetches. The "actual time" is in milliseconds. Ray. --------------------------------------------------------------- Raymond O'Donnell, Director of Music, Galway Cathedral, Ireland rod@iol.ie ---------------------------------------------------------------
В списке pgsql-general по дате отправления: