PostgreSQLstring matching

Trim and Remove Extra Whitespace in PostgreSQL with Regex

Use PostgreSQL regexp_replace to clean up extra whitespace in text columns. SQL examples for whitespace normalization.

The Regex Pattern

Regex pattern

\s+

Use this pattern with PostgreSQL's ~ operator.

PostgreSQL SQL Example

-- Use regexp_replace in PostgreSQL to normalize whitespace in a text column by collapsing multiple spaces into one
SELECT *
FROM your_table
WHERE your_column ~ '\\s+';

How This Works

Use regexp_replace in PostgreSQL to normalize whitespace in a text column by collapsing multiple spaces into one. 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 string matching — it avoids loading data into application memory just to filter it with a regex.

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