Ah of course yes…

 

From: [email protected] 
[mailto:[email protected]] 
Sent: 21 August 2015 03:08 PM
To: [email protected]
Subject: [firebird-support] Re: FB does table scan as soon as I use left outer 
join in view - why?

 

  

21.08.2015 14:26, 'Louis van Alphen' wrote:

> When I have a master with lookup as described; and many rows from the master 
> table reference the same lookup row, is the lookup row cached after the first 
> read or is it read for every master table row that refers to it. If I look at 
> the diagnostic tools I use, it seems to be the latter. If the case, also very 
> inefficient and expensive

Firebird never caches records. However, data pages containing lookup 
rows will be cached inside the buffer cache.

Dmitry





[Non-text portions of this message have been removed]

Reply via email to