PostgreSQLdata extraction

Extract Numbers from Text in PostgreSQL with Regex

Use PostgreSQL regexp_matches to extract numeric values from text columns. SQL examples for number extraction from unstructured data.

The Regex Pattern

Regex pattern

\d+(\.\d+)?

Use this pattern with PostgreSQL's ~ operator.

PostgreSQL SQL Example

-- Extract all numeric values from a notes or description text column in PostgreSQL using regexp_matches with digit pattern
SELECT *
FROM your_table
WHERE your_column ~ '\\d+(\\.\\d+)?';

How This Works

Extract all numeric values from a notes or description text column in PostgreSQL using regexp_matches with digit pattern. 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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