Check IP Address Format in SQLite with REGEXP
Validate IPv4 address formats in SQLite using the custom REGEXP operator. Setup and SQL examples for IP validation.
The Regex Pattern
Regex pattern
^((25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$Use this pattern with SQLite's REGEXP operator.
SQLite SQL Example
-- Use SQLite REGEXP to check if ip_address column values are valid IPv4 addresses in a logs table
SELECT *
FROM your_table
WHERE your_column REGEXP '^((25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\\.){3}(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$';How This Works
Use SQLite REGEXP to check if ip_address column values are valid IPv4 addresses in a logs table. The regex pattern is used with SQLite's REGEXP operator to filter rows at the database level.
Using regex directly in SQL is efficient for use cases like data validation — it avoids loading data into application memory just to filter it with a regex.
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