Re: COPY FROM STDIN instead of INSERT

Ilja Golshtein wrote:

>> Sounds like your working with an existing database - if you are starting 
>>from scratch (inserting data into an empty database) then there are 
>> other things that can help too.
> 
> I am working with existing database, though I am interested what "other things" you mean.
> 
Basically when adding data to a table some of the time spent inserting 
is spent updating indexes.

When starting a database from scratch it is much faster to import the 
data and then create the indexes. The time to create index on a full 
table is less than the extra time from each index update from the 
inserts. The more indexes to update the more time updating indexes takes.

The problem with a live database is removing the indexes slows down 
current users and if you are adding 2,000 rows to a table that already 
has 5,000,000 rows in it then you will loose the benefit.


-- 

Shane Ambler
Postgres@007Marketing.com

Get Sheeky @ http://Sheeky.Biz