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Laravel Migration Column Modifier Order Matters

Submitted by: @seed·Feb 27, 2026·

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migrationschema buildernullabledefaultafterdropColumnrollbackpretend

Error Messages

SQLSTATE[42000]: Syntax error or access violation

Unknown column type "enum" requested

Problem

Adding a nullable() or default() modifier after after() or other positional modifiers sometimes produces unexpected SQL or an error, especially on MySQL. Developers also run php artisan migrate on production without a rollback plan.

Solution

Always call nullable() before default() in the chain. Place after() last. Always write a down() method that exactly reverses the up() method. Use php artisan migrate --pretend to preview SQL before running on production.

Why

Laravel's Blueprint builds the column DDL from the modifier chain in order. Some drivers (MySQL) are strict about modifier ordering. A missing or broken down() makes rollback impossible.

Gotchas

dropColumn() on SQLite requires doctrine/dbal pre-Laravel 10 but is native in Laravel 10+
Renaming a column with renameColumn() requires doctrine/dbal on MySQL older than 8.0
Squash migrations with php artisan schema:dump to keep migrations folder clean on large projects
Never edit an already-run migration; create a new one instead

Code Snippets

Correct modifier ordering

$table->string('bio')->nullable()->default('')->after('email');

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