On Sat, Feb 20, 2021 at 12:53 PM Zhihong Yu <z...@yugabyte.com> wrote: > > Hi, > bq. case 3 - 2 integer(of 4 bytes each) columns, tuple size 32 bytes > > Is there some other column(s) per row apart from the integer columns ? Since > the 2 integer columns only occupy 8 bytes. I wonder where the other 32-8=24 > bytes come from.
There are no other columns in the test case. Those 24 bytes are for tuple header(23bytes) and 1 byte for other bookkeeping info. See "Table Row Layout" from https://www.postgresql.org/docs/devel/storage-page-layout.html. With Regards, Bharath Rupireddy. EnterpriseDB: http://www.enterprisedb.com
