Re: Very strange performance decrease when reusing a PreparedStatement

Поиск
Список
Период
Сортировка
От Oliver Jowett
Тема Re: Very strange performance decrease when reusing a PreparedStatement
Дата
Msg-id 49FE2DEE.809@opencloud.com
обсуждение исходный текст
Ответ на Re: Very strange performance decrease when reusing a PreparedStatement  (Oliver Jowett <oliver@opencloud.com>)
Список pgsql-jdbc
Oliver Jowett wrote:
> Tom Lane wrote:
>
>> There are certainly cases where lack of parameter type information could
>> lead to a poor plan, but they are corner cases.

Sorry, I read that as "lack of parameter information" which is what this
comment is about:

> I fear they are less of a corner case than you believe - they seem to
> pop up regularly here on the JDBC list.

The parameter type issues themselves are mostly resolved AFAIK.

-O

В списке pgsql-jdbc по дате отправления:

Предыдущее
От: Oliver Jowett
Дата:
Сообщение: Re: Very strange performance decrease when reusing a PreparedStatement
Следующее
От: Oliver Jowett
Дата:
Сообщение: Re: Very strange performance decrease when reusing a PreparedStatement