Re: batch insert/update

blackwater dev <blackwaterdev(at)gmail(dot)com> schrieb:

> I have some php code that will be pulling in a file via ftp. This file will
> contain 20,000+ records that I then need to pump into the postgres db. These
> records will represent a subset of the records in a certain table. I basically
> need an efficient way to pump these rows into the table, replacing matching
> rows (based on id) already there and inserting ones that aren't. Sort of
> looping through the result and inserting or updating based on the presents of
> the row, what is the best way to handle this? This is something that will run
> nightly.

Insert you data to a extra table and work with regular SQL to
insert/update the destination table. You can use COPY to insert the data
into your extra table, this works very fast, but you need a suitable
file format for this.

Andreas
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