Re: postgres 8.3 beta 2 storage question - Mailing list pgsql-general

2007/11/27, SHARMILA JOTHIRAJAH <sharmi_jo@yahoo.com>:

> 1.How does postgres version 8.3 betat 2 handle varchar and numeric data
> types in terms of storage
> I understand for varchar it has 1byte overhead (instead of 4) if length<128
> How does it handle for numeric? The manual says
> "The actual storage requirement is two bytes for each group of four decimal
> digits, plus five to eight bytes overhead."
which manual?
( not these two: )
http://www.postgresql.org/docs/8.1/static/datatype.html#DATATYPE-NUMERIC-DECIMAL
http://www.postgresql.org/docs/8.2/static/datatype-numeric.html#DATATYPE-NUMERIC-DECIMAL


> 2. Does postgres always inserts a complete record into a page unlike oracle
> whose record can span multiple pages? Does this waste space too?
records larger than one page are TOASTed

http://www.postgresql.org/docs/current/static/storage-page-layout.html

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Filip Rembiałkowski