PostgreSQLdata validation

Validate Decimal Price Format in PostgreSQL Using Regex

Use PostgreSQL regex to validate that price columns contain valid decimal number formats. SQL validation query examples.

The Regex Pattern

Regex pattern

^\d+(\.\d{1,2})?$

Use this pattern with PostgreSQL's ~ operator.

PostgreSQL SQL Example

-- Validate price or amount columns in PostgreSQL that store values as text to ensure correct decimal formatting
SELECT *
FROM your_table
WHERE your_column ~ '^\\d+(\\.\\d{1,2})?$';

How This Works

Validate price or amount columns in PostgreSQL that store values as text to ensure correct decimal formatting. 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 validation — it avoids loading data into application memory just to filter it with a regex.

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