open-dsi
/
postgres
mirror of https://github.com/postgres/postgres
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
42163 Commits
38 Branches
654 Tags
743 MiB
Tag: Branch: Tree: f7946a92b6
Branches Tags
${ item.name }
Create tag ${ searchTerm }
Create branch ${ searchTerm }
from 'f7946a92b6'
${ noResults }
postgres/contrib/btree_gist/sql/macaddr8.sql

38 lines
1.1 KiB
Raw Normal View History Unescape

Add support for EUI-64 MAC addresses as macaddr8 This adds in support for EUI-64 MAC addresses by adding a new data type called 'macaddr8' (using our usual convention of indicating the number of bytes stored). This was largely a copy-and-paste from the macaddr data type, with appropriate adjustments for having 8 bytes instead of 6 and adding support for converting a provided EUI-48 (6 byte format) to the EUI-64 format. Conversion from EUI-48 to EUI-64 inserts FFFE as the 4th and 5th bytes but does not perform the IPv6 modified EUI-64 action of flipping the 7th bit, but we add a function to perform that specific action for the user as it may be commonly done by users who wish to calculate their IPv6 address based on their network prefix and 48-bit MAC address. Author: Haribabu Kommi, with a good bit of rework of macaddr8_in by me. Reviewed by: Vitaly Burovoy, Kuntal Ghosh Discussion: https://postgr.es/m/CAJrrPGcUi8ZH+KkK+=TctNQ+EfkeCEHtMU_yo1mvX8hsk_ghNQ@mail.gmail.com
8 years ago
-- macaddr check
CREATE TABLE macaddr8tmp (a macaddr8);
\copy macaddr8tmp from 'data/macaddr.data'
SET enable_seqscan=on;
SELECT count(*) FROM macaddr8tmp WHERE a < '22:00:5c:e5:9b:0d';
SELECT count(*) FROM macaddr8tmp WHERE a <= '22:00:5c:e5:9b:0d';
SELECT count(*) FROM macaddr8tmp WHERE a = '22:00:5c:e5:9b:0d';
SELECT count(*) FROM macaddr8tmp WHERE a >= '22:00:5c:e5:9b:0d';
SELECT count(*) FROM macaddr8tmp WHERE a > '22:00:5c:e5:9b:0d';
CREATE INDEX macaddr8idx ON macaddr8tmp USING gist ( a );
SET enable_seqscan=off;
SELECT count(*) FROM macaddr8tmp WHERE a < '22:00:5c:e5:9b:0d'::macaddr8;
SELECT count(*) FROM macaddr8tmp WHERE a <= '22:00:5c:e5:9b:0d'::macaddr8;
SELECT count(*) FROM macaddr8tmp WHERE a = '22:00:5c:e5:9b:0d'::macaddr8;
SELECT count(*) FROM macaddr8tmp WHERE a >= '22:00:5c:e5:9b:0d'::macaddr8;
SELECT count(*) FROM macaddr8tmp WHERE a > '22:00:5c:e5:9b:0d'::macaddr8;
-- Test index-only scans
SET enable_bitmapscan=off;
EXPLAIN (COSTS OFF)
SELECT * FROM macaddr8tmp WHERE a < '02:03:04:05:06:07'::macaddr8;
SELECT * FROM macaddr8tmp WHERE a < '02:03:04:05:06:07'::macaddr8;