1504
1504
1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 36
1505
1505
1 SIMPLE t4 eq_ref PRIMARY,id PRIMARY 10 test.t1.carrier 1
1506
1506
1 SIMPLE t5 ref carrier_id carrier_id 5 test.t4.id 1 Using index
1510
1510
FROM ((t2 JOIN t1 ON t2.package_id = t1.id)
1511
1511
JOIN t3 ON t3.package_id = t1.id)