Minify SQL

Remove nonessential SQL whitespace and comments without reordering clauses.

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ToolSQL Minifier
Input
Output
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Preview

How it works

Comments and formatting whitespace are removed between SQL tokens while strings, identifiers, numeric literals, and required separators remain. The pass does not optimize execution plans.

  • Whitespace outside quoted values is usually insignificant.
  • Clause order remains unchanged.

Worked example

Minify SELECT Query
Remove unnecessary whitespace and comments from a SQL query
Input
											SELECT
  name,
  email
FROM
  users
WHERE
  active = true
  -- only active users
  AND age > 18;
Output
												SELECT name, email FROM users WHERE active = true  AND age > 18;

When to use this

Embedded queries, telemetry payloads, and generated migrations minify SQL.

Edge cases

  • Whitespace inside a string is data.
  • Removing the newline after a double-dash comment changes its scope.
  • Adjacent keywords need a separator.

References