sql: actually use interleaving in join select benchmark
sql: actually use interleaving in join select benchmark

name                               old time/op    new time/op    delta
InterleavedSelect1000_Cockroach-8    87.6ms ± 6%    85.3ms ± 2%      ~     (p=0.310 n=5+5)

name                               old alloc/op   new alloc/op   delta
InterleavedSelect1000_Cockroach-8     394kB ± 0%     790kB ± 0%  +100.40%  (p=0.008 n=5+5)

name                               old allocs/op  new allocs/op  delta
InterleavedSelect1000_Cockroach-8     2.91k ± 0%     3.00k ± 0%    +3.15%  (p=0.008 n=5+5)

sunya123/cockroach,petermattis/cockroach,vaibhavarora/cockroach,paperstreet/cockroach,arjun4084346/cockroach,sunya123/cockroach,arjun4084346/cockroach,glycerine/cockroach,cockroachdb/cockroach,arjun4084346/cockroach,glycerine/cockroach,sunya123/cockroach,sunya123/cockroach,sunya123/cockroach,veteranlu/cockroach,paperstreet/cockroach,maxlang/cockroach,vivekmenezes/cockroach,cockroachdb/cockroach,cockroachdb/cockroach,veteranlu/cockroach,arjun4084346/cockroach,maxlang/cockroach,vivekmenezes/cockroach,vivekmenezes/cockroach,maxlang/cockroach,glycerine/cockroach,sunya123/cockroach,glycerine/cockroach,veteranlu/cockroach,glycerine/cockroach,vaibhavarora/cockroach,petermattis/cockroach,paperstreet/cockroach,petermattis/cockroach,petermattis/cockroach,arjun4084346/cockroach,vaibhavarora/cockroach,vivekmenezes/cockroach,paperstreet/cockroach,maxlang/cockroach,vaibhavarora/cockroach,vivekmenezes/cockroach,cockroachdb/cockroach,veteranlu/cockroach,maxlang/cockroach,vivekmenezes/cockroach,maxlang/cockroach,paperstreet/cockroach,paperstreet/cockroach,cockroachdb/cockroach,petermattis/cockroach,petermattis/cockroach,petermattis/cockroach,paperstreet/cockroach,vaibhavarora/cockroach,maxlang/cockroach,cockroachdb/cockroach,cockroachdb/cockroach,arjun4084346/cockroach,veteranlu/cockroach,glycerine/cockroach,vivekmenezes/cockroach,vaibhavarora/cockroach,vaibhavarora/cockroach,veteranlu/cockroach,sunya123/cockroach,vivekmenezes/cockroach,glycerine/cockroach,maxlang/cockroach,arjun4084346/cockroach,veteranlu/cockroach,arjun4084346/cockroach,paperstreet/cockroach,vaibhavarora/cockroach,veteranlu/cockroach,petermattis/cockroach,sunya123/cockroach,cockroachdb/cockroach,glycerine/cockroach