PostgreSQLdata extraction

Extract Email Domain in PostgreSQL with regexp_replace

Use PostgreSQL regexp_replace to extract the domain part from email address columns. SQL examples for email domain analysis.

The Regex Pattern

Regex pattern

^[^@]+@(.+)$

Use this pattern with PostgreSQL's ~ operator.

PostgreSQL SQL Example

-- Extract domains from email addresses in a PostgreSQL users table for analytics using regexp_replace
SELECT *
FROM your_table
WHERE your_column ~ '^[^@]+@(.+)$';

How This Works

Extract domains from email addresses in a PostgreSQL users table for analytics using regexp_replace. The regex pattern is used with PostgreSQL's ~ operator to filter rows at the database level.

Using regex directly in SQL is efficient for use cases like data extraction — it avoids loading data into application memory just to filter it with a regex.

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