forked from Lainports/opnsense-ports
13 lines
446 B
Text
13 lines
446 B
Text
Prefix matching is both very common and important in telephony applications,
|
|
where call routing and costs depend on matching caller/callee phone number
|
|
to an operator prefix.
|
|
|
|
Let's say the prefixes table is called prefixes, a typical query will try to
|
|
match a phone number to the longest prefix in the table:
|
|
|
|
SELECT *
|
|
FROM prefixes
|
|
WHERE prefix @> '0123456789'
|
|
ORDER BY length(prefix) DESC LIMIT 1;
|
|
|
|
WWW: https://github.com/dimitri/prefix
|