Oops, I misspoke. Calcite hasn’t used the array-to-Values transformation here. I’m not sure where the ARRAY literal has gone. Possibly it’s still present, just not being printed in the plan.
Julian > On May 2, 2022, at 8:41 AM, Julian Hyde <jhyde.apa...@gmail.com> wrote: > > The plan isn’t “completely wrong”. Calcite intentionally converts UNNEST of > a constant ARRAY into Values because the latter is a primitive relational > expression. > > As for the casts, maybe some confusion about scalar types versus record types > with a single field. Can you please log a jira case. > > Julian > >> On May 2, 2022, at 8:09 AM, Dmitry Sysolyatin <dm.sysolya...@gmail.com> >> wrote: >> >> Hi! >> I am working on https://issues.apache.org/jira/browse/CALCITE-5126. When I >> was writing tests for this task I faced with issue that reproducible in >> main branch as well. >> >> I tried to execute the following query using unnest.iq file >> >> SELECT ARRAY(SELECT * FROM UNNEST(s.x) y) >> FROM (SELECT ARRAY[1,2,3] as x) s; >> >> Calcite generated the following plan: >> >> EnumerableProject(EXPR$0=[$1]): rowcount = 1.0, cumulative cost = {14.0 >> rows, 12.0 cpu, 0.0 io}, id = 98 >> >> EnumerableCorrelate(correlation=[$cor0], joinType=[inner], >> requiredColumns=[{0}]): rowcount = 1.0, cumulative cost = {13.0 rows, 11.0 >> cpu, 0.0 io}, id = 97 >> >> EnumerableValues(tuples=[[{ 0 }]]): rowcount = 1.0, cumulative cost = >> {1.0 rows, 1.0 cpu, 0.0 io}, id = 79 >> >> EnumerableCollect(field=[x]): rowcount = 1.0, cumulative cost = {5.0 >> rows, 5.0 cpu, 0.0 io}, id = 96 >> >> EnumerableProject(EXPR$0=[+($0, 1)]): rowcount = 1.0, cumulative cost >> = {4.0 rows, 4.0 cpu, 0.0 io}, id = 95 >> >> EnumerableUncollect: rowcount = 1.0, cumulative cost = {3.0 rows, >> 3.0 cpu, 0.0 io}, id = 94 >> >> EnumerableProject(X=[$cor0.X]): rowcount = 1.0, cumulative cost = >> {2.0 rows, 2.0 cpu, 0.0 io}, id = 93 >> >> EnumerableValues(tuples=[[{ 0 }]]): rowcount = 1.0, cumulative >> cost = {1.0 rows, 1.0 cpu, 0.0 io}, id = 79 >> >> It is a completely wrong plan. It does not use ARRAY[1,2,3] at all and code >> fails with error: >> Caused by: java.lang.ClassCastException: class java.lang.Integer cannot be >> cast to class java.util.List (java.lang.Integer and java.util.List are in >> module java.base of loader 'bootstrap') >> >> >> Maybe someone knows how to fastly fix this?
