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https://issues.apache.org/jira/browse/CALCITE-5683?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17726066#comment-17726066
]
Hanumath Rao Maduri commented on CALCITE-5683:
----------------------------------------------
With the fix provided for this PR, it is also fixing the issue reported in
CALCITE-5716.
Here is the analysis of the queries generated.
SELECT summary.id,
(SELECT Max(detail.id)
FROM detail
WHERE dt = (SELECT Max(dt) AS maxDate
FROM detail detail2
WHERE detail2.summary_id = summary.id)
AND detail.summary_id = summary.id) AS Detail_With_MaxDate,
summary.data
FROM summary ;
Results from mysql
||id||Detail_With_MaxDate||data||
|1|13|9999|
|2|15|8888|
|3|19|7777|
-- with the code changes in this PR
SELECT ID, EXPR AS DETAIL_WITH_MAXDATE, DATA
FROM SUMMARY
LEFT JOIN (SELECT t1.SUMMARY_ID AS SUMMARY_ID0, MAX(t.ID) AS EXPR
FROM (SELECT ID, DT
FROM DETAIL) AS t
INNER JOIN (SELECT SUMMARY_ID, MAX(DT) AS MAXDATE
FROM DETAIL
GROUP BY SUMMARY_ID) AS t1 ON t.DT = t1.MAXDATE
GROUP BY t1.SUMMARY_ID) AS t3 ON SUMMARY.ID = t3.SUMMARY_ID0;
Results from mysql for the above query
||id||Detail_With_MaxDate||data||
|1|13|9999|
|2|15|8888|
|3|19|7777|
-- without the code changes in this PR (on latest code)
SELECT ID, t2.EXPR AS DETAIL_WITH_MAXDATE, SUMMARY.DATA
FROM SUMMARY
LEFT JOIN (SELECT DETAIL.SUMMARY_ID AS SUMMARY_ID3, MAX(DETAIL.ID) AS EXPR
FROM DETAIL
LEFT JOIN (SELECT SUMMARY_ID, MAX(DT) AS MAXDATE
FROM DETAIL
GROUP BY SUMMARY_ID) AS t0 ON DETAIL.ID = t0.SUMMARY_ID
WHERE DETAIL.DT = t0.MAXDATE
GROUP BY DETAIL.SUMMARY_ID) AS t2 ON SUMMARY.ID = t2.SUMMARY_ID3
Results from mysql for the above query
||id||Detail_With_MaxDate||data||
|1|null|9999|
|2|null|8888|
|3|null|7777|
> Two level nested correlated subquery throws an exception during
> decorrelation.
> -------------------------------------------------------------------------------
>
> Key: CALCITE-5683
> URL: https://issues.apache.org/jira/browse/CALCITE-5683
> Project: Calcite
> Issue Type: Bug
> Components: core
> Affects Versions: 1.33.0
> Reporter: Hanumath Rao Maduri
> Assignee: Hanumath Rao Maduri
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.35.0
>
>
> The following two level nested query is throwing an exception.
> {code:java}
> SELECT
> x_19 * (SELECT Max(main.x_111)
> FROM t1 main
> WHERE main.x_11 = t194.x_20
> AND main.x_12 = 'AFRICA'
> AND main.x_13 = (SELECT Max(rc.x_18)
> FROM t184 rc
> WHERE rc.x_15 = main.x_11
> AND rc.x_16 = main.x_12
> AND rc.x_17 = main.x_13
> AND rc.x_18 <= t194.x_22))
> FROM t194 {code}
> Following is the stack trace and the calcite version we are using is 1.33
> {code:java}
> java.lang.NullPointerException: cm.mapCorToCorRel.get($cor1)
> at java.util.Objects.requireNonNull(Objects.java:290)
> at
> org.apache.calcite.sql2rel.RelDecorrelator.getCorRel(RelDecorrelator.java:928)
> at
> org.apache.calcite.sql2rel.RelDecorrelator.createValueGenerator(RelDecorrelator.java:820)
> at
> org.apache.calcite.sql2rel.RelDecorrelator.decorrelateInputWithValueGenerator(RelDecorrelator.java:1028)
> at
> org.apache.calcite.sql2rel.RelDecorrelator.maybeAddValueGenerator(RelDecorrelator.java:947)
> at
> org.apache.calcite.sql2rel.RelDecorrelator.decorrelateRel(RelDecorrelator.java:1150)
> at
> org.apache.calcite.sql2rel.RelDecorrelator.decorrelateRel(RelDecorrelator.java:1116)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:498)
> at org.apache.calcite.util.ReflectUtil$2.invoke(ReflectUtil.java:531)
> at
> org.apache.calcite.sql2rel.RelDecorrelator.getInvoke(RelDecorrelator.java:707)
> at
> org.apache.calcite.sql2rel.RelDecorrelator.decorrelateRel(RelDecorrelator.java:749)
> at
> org.apache.calcite.sql2rel.RelDecorrelator.decorrelateRel(RelDecorrelator.java:738)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:498)
> at org.apache.calcite.util.ReflectUtil$2.invoke(ReflectUtil.java:531)
> at
> org.apache.calcite.sql2rel.RelDecorrelator.getInvoke(RelDecorrelator.java:707)
> at
> org.apache.calcite.sql2rel.RelDecorrelator.decorrelateRel(RelDecorrelator.java:512)
> at
> org.apache.calcite.sql2rel.RelDecorrelator.decorrelateRel(RelDecorrelator.java:495)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:498)
> at org.apache.calcite.util.ReflectUtil$2.invoke(ReflectUtil.java:531)
> at
> org.apache.calcite.sql2rel.RelDecorrelator.getInvoke(RelDecorrelator.java:707)
> at
> org.apache.calcite.sql2rel.RelDecorrelator.decorrelateRel(RelDecorrelator.java:1291)
> at
> org.apache.calcite.sql2rel.RelDecorrelator.decorrelateRel(RelDecorrelator.java:1270)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:498)
> at org.apache.calcite.util.ReflectUtil$2.invoke(ReflectUtil.java:531)
> at
> org.apache.calcite.sql2rel.RelDecorrelator.getInvoke(RelDecorrelator.java:707)
> at
> org.apache.calcite.sql2rel.RelDecorrelator.decorrelateRel(RelDecorrelator.java:749)
> at
> org.apache.calcite.sql2rel.RelDecorrelator.decorrelateRel(RelDecorrelator.java:738)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:498)
> at org.apache.calcite.util.ReflectUtil$2.invoke(ReflectUtil.java:531)
> at
> org.apache.calcite.sql2rel.RelDecorrelator.getInvoke(RelDecorrelator.java:707)
> at
> org.apache.calcite.sql2rel.RelDecorrelator.decorrelateRel(RelDecorrelator.java:749)
> at
> org.apache.calcite.sql2rel.RelDecorrelator.decorrelateRel(RelDecorrelator.java:738)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:498)
> at org.apache.calcite.util.ReflectUtil$2.invoke(ReflectUtil.java:531)
> at
> org.apache.calcite.sql2rel.RelDecorrelator.getInvoke(RelDecorrelator.java:707)
> at
> org.apache.calcite.sql2rel.RelDecorrelator.decorrelateRel(RelDecorrelator.java:512)
> at
> org.apache.calcite.sql2rel.RelDecorrelator.decorrelateRel(RelDecorrelator.java:495)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:498)
> at org.apache.calcite.util.ReflectUtil$2.invoke(ReflectUtil.java:531)
> at
> org.apache.calcite.sql2rel.RelDecorrelator.getInvoke(RelDecorrelator.java:707)
> at
> org.apache.calcite.sql2rel.RelDecorrelator.decorrelateRel(RelDecorrelator.java:1187)
> at
> org.apache.calcite.sql2rel.RelDecorrelator.decorrelateRel(RelDecorrelator.java:1169)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:498)
> at org.apache.calcite.util.ReflectUtil$2.invoke(ReflectUtil.java:531)
> at
> org.apache.calcite.sql2rel.RelDecorrelator.getInvoke(RelDecorrelator.java:707)
> at
> org.apache.calcite.sql2rel.RelDecorrelator.decorrelateRel(RelDecorrelator.java:749)
> at
> org.apache.calcite.sql2rel.RelDecorrelator.decorrelateRel(RelDecorrelator.java:738)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:498)
> at org.apache.calcite.util.ReflectUtil$2.invoke(ReflectUtil.java:531)
> at
> org.apache.calcite.sql2rel.RelDecorrelator.getInvoke(RelDecorrelator.java:707)
> at
> org.apache.calcite.sql2rel.RelDecorrelator.decorrelateRel(RelDecorrelator.java:749)
> at
> org.apache.calcite.sql2rel.RelDecorrelator.decorrelateRel(RelDecorrelator.java:738)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:498)
> at org.apache.calcite.util.ReflectUtil$2.invoke(ReflectUtil.java:531)
> at
> org.apache.calcite.sql2rel.RelDecorrelator.getInvoke(RelDecorrelator.java:707)
> at
> org.apache.calcite.sql2rel.RelDecorrelator.decorrelate(RelDecorrelator.java:306)
> at
> org.apache.calcite.sql2rel.RelDecorrelator.decorrelateQuery(RelDecorrelator.java:230)
> {code}
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