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