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2016-12-15 16:23 GMT+01:00 Adrian Klaver <adrian.klaver@aklaver.com>:On 12/15/2016 07:17 AM, Tom DalPozzo wrote: Hi, it's not clear to me when tuple data (max 1000 bytes total) get compressed on disk and when not. I tried with pg_column_size to find the tuple's size but I get ambiguous results. What is the table definition? Maybe this will help?:https://www.postgresql.org/docs/9.5/static/storage-toast.html It seems to work but sometimes the tuples seem compressed and sometime not. I tried both with constant data and random bytes. Thanks Pupillo -- Adrian Klaveradrian.klaver@aklaver.com
On 12/15/2016 07:17 AM, Tom DalPozzo wrote:
Hi,
it's not clear to me when tuple data (max 1000 bytes total) get
compressed on disk and when not.
I tried with pg_column_size to find the tuple's size but I get ambiguous
results.
What is the table definition?
Maybe this will help?:
https://www.postgresql.org/docs/9.5/static/storage-toast.html
It seems to work but sometimes the tuples seem compressed and sometime not.
I tried both with constant data and random bytes.
Thanks
Pupillo
--
Adrian Klaver
adrian.klaver@aklaver.com
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