How to Solve SQLSTATE[23000] Integrity Constraint 1062 Error Laravel

In this section we will see how to solve SQLSTATE[23000]: Integrity constraint violation: 1062 Duplicate entry '[email protected]' for key 'users.users_email_unique' in laravel 9.

Example

When you got this SQLSTATE[23000]: Integrity constraint violation: 1062 Duplicate entry error

1. When you add Duplicate entry and database like users name, email or other filed but table is unique.

2. if $table->string('email')->unique(); table is unique then you need to add unique value email.

laravel solve SQLSTATE[23000]: Integrity constraint violation: 1062 Duplicate entry '[email protected]' for key 'users.users_email_unique'

How to solve and avoid SQLSTATE[23000] Integrity Constraint 1062 Duplicate Entry Error in Laravel

1. Add laravel unique validation to avoid duplicate Entry

'email' => ['required', 'string', 'email', 'max:255', 'unique:'.User::class],

2. Try to avoid use $request->all() if you use User::create($request->all()); it dangerous.

3. Use unique() table when its necessary.

avoid.

$table->string('name')->unique();
$table->string('email')->unique();

Use unique() when necessary like name will be similar like john doe and john doe but there email must be unique(). unique value like, person identity number, product code etc

$table->string('name');
$table->string('email')->unique();