{
    'type' => 'Seq Scan',
    'estimated_startup_cost' => 0.00,
    'estimated_total_cost' => 1885.6,
    'estimated_rows' => 227,
    'estimated_row_width' => 200,
    'scan_on' => {
        'table_name' => 'pg_class',
        'table_alias' => 'c',
    },
    'subplans' => [
    {
        'type' => 'Index Scan',
        'estimated_startup_cost' => 0.00,
        'estimated_total_cost' => 8.27,
        'estimated_rows' => 1,
        'estimated_row_width' => 4,
        'extra_info' => [
        'Index Cond: (relname = $0)',
        ],
        'scan_on' => {
            'index_name' => 'pg_class_relname_nsp_index',
            'table_name' => 'pg_class',
            'table_alias' => 'c2',
        },
    },
    ]
}
