Storage space usage - Mailing list pgsql-performance

From Gangadharan S.A.
Subject Storage space usage
Date
Msg-id e36d60c10802010044o40143aaybcbbfa223d289a35@mail.gmail.com
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Responses Re: Storage space usage
List pgsql-performance
Hi,
I have 2 questions regarding the storage optimization done by Postgres:
1) Is a NULL value optimized for storage. If I have a timestamp (or some such) field that I set to default NULL, will it still use up the full space for the data type.
2) Similarly, if I have a text array, is an empty array optimized for storage?
Thanks,
Gangadharan

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