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presto:tiny> explain (type distributed) | |
select * from | |
(select orderkey + 1 orderkey from orders) o | |
join | |
(select orderkey + 1 orderkey from orders) o1 | |
on (o.orderkey = o1.orderkey); | |
Query Plan | |
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | |
Fragment 0 [SINGLE] | |
Output layout: [expr, expr_13] | |
- Output[orderkey, orderkey] => [expr:bigint, expr_13:bigint] | |
orderkey := expr | |
orderkey := expr_13 | |
- RemoteSource[1] => [expr:bigint, expr_13:bigint] | |
Fragment 1 [SOURCE] | |
Output layout: [expr, expr_13] | |
- InnerJoin[("$hashvalue" = "combine_hash") AND ("expr" = "expr_13") AND ("combine_hash_33" = "$hashvalue_29")] => [expr:bigint, $hashvalue:bigint, combine_hash_33:bigint, expr_13:bigint, $hashvalue_29:bigint, combine_hash:bigint] | |
- Project => [expr:bigint, $hashvalue:bigint, combine_hash_33:bigint] | |
expr := ("orderkey" + 1) | |
$hashvalue := "combine_hash"(0, COALESCE("$operator$hash_code"(("orderkey" + 1)), 0)) | |
combine_hash_33 := "combine_hash"(0, COALESCE("$operator$hash_code"(("orderkey" + 1)), 0)) | |
- TableScan[tpch:tpch:orders:sf0.01, originalConstraint = true] => [orderkey:bigint] | |
orderkey := tpch:orderkey | |
- Project => [expr_13:bigint, $hashvalue_29:bigint, combine_hash:bigint] | |
combine_hash := "combine_hash"(0, COALESCE("$operator$hash_code"("expr_13"), 0)) | |
- RemoteSource[2] => [expr_13:bigint, $hashvalue_29:bigint] | |
Fragment 2 [SOURCE] | |
Output layout: [expr_13, $hashvalue_29] | |
- Project => [expr_13:bigint, $hashvalue_29:bigint] | |
expr_13 := ("orderkey_3" + 1) | |
$hashvalue_29 := "combine_hash"(0, COALESCE("$operator$hash_code"(("orderkey_3" + 1)), 0)) | |
- TableScan[tpch:tpch:orders:sf0.01, originalConstraint = true] => [orderkey_3:bigint] | |
orderkey_3 := tpch:orderkey | |
(1 row) |
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