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https://issues.apache.org/jira/browse/CALCITE-5127?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17531619#comment-17531619
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Dmitry Sysolyatin edited comment on CALCITE-5127 at 5/4/22 9:22 AM:
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[~libenchao] Thanks for doing this task. There are more failing queries. But I
am not sure that the reason is the same. It is more looks like that correlate
variable $cor0 has an incorrect type
{code:java}
!use bookstore
SELECT array(SELECT lau."books")
FROM "bookstore"."authors" au
LEFT JOIN "bookstore"."authors" lau ON (lau."name" = au."name");
{code}
It does not take into account that `lau` records can be null because of LEFT
JOIN as a result it fails:
{code:java}
> RecordType(RecordType(RecordType(JavaType(class java.lang.String) title,
> JavaType(int) NOT NULL publishYear, RecordType(JavaType(int) NOT NULL pageNo,
> JavaType(class java.lang.String) contentType) NOT NULL ARRAY NOT NULL pages)
> NOT NULL ARRAY books) NOT NULL ARRAY NOT NULL EXPR$0) NOT NULL
> converted type:
> RecordType(RecordType(RecordType(JavaType(class java.lang.String) title,
> JavaType(int) NOT NULL publishYear, RecordType(JavaType(int) NOT NULL pageNo,
> JavaType(class java.lang.String) contentType) NOT NULL ARRAY NOT NULL pages)
> NOT NULL ARRAY NOT NULL books) NOT NULL ARRAY NOT NULL EXPR$0) NOT NULL
> rel:
> LogicalProject(EXPR$0=[ARRAY({
> LogicalProject(books=[$cor0.books0])
> LogicalValues(tuples=[[{ 0 }]])
> })])
> LogicalJoin(condition=[=($9, $4)], joinType=[left])
> LogicalProject(aid=[$0], name=[$1], birthPlace=[$2], books=[$3],
> name0=[CAST($1):VARCHAR])
> LogicalTableScan(table=[[bookstore, authors]])
> LogicalProject(aid=[$0], name=[$1], birthPlace=[$2], books=[$3],
> name0=[CAST($1):VARCHAR])
> LogicalTableScan(table=[[bookstore, authors]])
>
{code}
was (Author: dmsysolyatin):
[~libenchao] Thanks for doing this task. There are more failing queries. But I
am not sure that the reason is the same. It is more looks like that correlate
variable $cor0 has an incorrect type
{code:java}
!use bookstore
SELECT array(SELECT lau."books")
FROM "bookstore"."authors" au
LEFT JOIN "bookstore"."authors" lau ON (lau."name" = au."name");
{code}
It does not take into account that `lau` records can be null because of JOIN as
a result it fails:
{code:java}
> RecordType(RecordType(RecordType(JavaType(class java.lang.String) title,
> JavaType(int) NOT NULL publishYear, RecordType(JavaType(int) NOT NULL pageNo,
> JavaType(class java.lang.String) contentType) NOT NULL ARRAY NOT NULL pages)
> NOT NULL ARRAY books) NOT NULL ARRAY NOT NULL EXPR$0) NOT NULL
> converted type:
> RecordType(RecordType(RecordType(JavaType(class java.lang.String) title,
> JavaType(int) NOT NULL publishYear, RecordType(JavaType(int) NOT NULL pageNo,
> JavaType(class java.lang.String) contentType) NOT NULL ARRAY NOT NULL pages)
> NOT NULL ARRAY NOT NULL books) NOT NULL ARRAY NOT NULL EXPR$0) NOT NULL
> rel:
> LogicalProject(EXPR$0=[ARRAY({
> LogicalProject(books=[$cor0.books0])
> LogicalValues(tuples=[[{ 0 }]])
> })])
> LogicalJoin(condition=[=($9, $4)], joinType=[left])
> LogicalProject(aid=[$0], name=[$1], birthPlace=[$2], books=[$3],
> name0=[CAST($1):VARCHAR])
> LogicalTableScan(table=[[bookstore, authors]])
> LogicalProject(aid=[$0], name=[$1], birthPlace=[$2], books=[$3],
> name0=[CAST($1):VARCHAR])
> LogicalTableScan(table=[[bookstore, authors]])
>
{code}
> Error when executing query with subquery in select list that uses outer
> column of array type
> --------------------------------------------------------------------------------------------
>
> Key: CALCITE-5127
> URL: https://issues.apache.org/jira/browse/CALCITE-5127
> Project: Calcite
> Issue Type: Bug
> Components: core
> Reporter: Dmitry Sysolyatin
> Priority: Major
>
> The following queries fail:
> {code}
> SELECT ARRAY(SELECT s.x) FROM (SELECT ARRAY[1,2,3] as x) s;
> SELECT ARRAY(SELECT * FROM UNNEST(s.x) y) FROM (SELECT ARRAY[1,2,3] as x) s;
> SELECT (SELECT CARDINALITY(s.x) LIMIT 1) FROM (SELECT ARRAY[1,2,3] as x) s;
>
> {code}
> With exception:
> {code}
> Caused by: java.lang.ClassCastException: java.lang.Integer cannot be cast to
> java.util.List
> {code}
> You can find test cases for this task in
> https://github.com/apache/calcite/commit/27e68ded2c3bea7d7af73dd1dc156e46fb3591a8
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