{
'scan_on' => {
'index_name' => 'test_pkey',
'table_name' => 'test'
},
'estimated_startup_cost' => '0',
'estimated_rows' => '1',
'type' => 'Index Scan',
'extra_info' => [ 'Index Cond: (id = 4)' ],
'estimated_total_cost' => '8.27',
'estimated_row_width' => '4',
'is_analyzed' => 0,
}