Is it possible to store a 1 byte number in Postgres?

Question

I have 7 8-bit integer values per record that I want to store in Postgres. Pg doesn\'t offer a single byte integer type, SMALLINT, or 2 bytes, being the smallest integer datatyp

Answer 1

First you asked about 7, but now 6 bytes. Six 8-bit values corresponds exactly to MAC address size and PostgreSQL's built in type macaddr. You can insert those bytes using MAC syntax f.i. A1-B2-C3-D4-E5-F6.