PostgreSQL: Unique violation: 7 ERROR: duplicate key value violates unique constraint “users_pkey”

Question

I\'m using psql in my Laravel App. I\'m trying to create my user, and I keep getting this error

Unique violation: 7 ERROR: duplicate key value violates uniqu

Answer 1

The following code provides a way to do this in Laravel which is what the OP is using.

// Get all the tables from your database
$tables = \DB::select('SELECT table_name FROM information_schema.tables WHERE table_schema = \'public\' ORDER BY table_name;'); 

// Set the tables in the database you would like to ignore
$ignores = array('admin_setting', 'model_has_permissions', 'model_has_roles', 'password_resets', 'role_has_permissions', 'sessions'); 

//loop through the tables
foreach ($tables as $table) { 

   // if the table is not to be ignored then:
   if (!in_array($table->table_name, $ignores)) { 

       //Get the max id from that table and add 1 to it
       $seq = \DB::table($table->table_name)->max('id') + 1; 

       // alter the sequence to now RESTART WITH the new sequence index from above        
       \DB::select('ALTER SEQUENCE ' . $table->table_name . '_id_seq RESTART WITH ' . $seq); 

    }

}

Note - Using ALTER SEQUENCE "blocks concurrent transactions". Consider using the SQL statement from alternative solution provided above if this is not desired.