[ https://issues.apache.org/jira/browse/CALCITE-4592?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17335059#comment-17335059 ]
Julian Hyde commented on CALCITE-4592: -------------------------------------- [~amsharma],To make this more concrete, can you add to your description an example of the SQL that you are trying to generate? (I see [~Chunwei Lei] has asked you to add a test case for the PR, which is related, and also an appropriate request.) > RelToSqlConverter#visit(Join e) does not populate correlation context > --------------------------------------------------------------------- > > Key: CALCITE-4592 > URL: https://issues.apache.org/jira/browse/CALCITE-4592 > Project: Calcite > Issue Type: Bug > Components: core > Affects Versions: 1.26.0 > Reporter: Amandeep Sharma > Priority: Major > Labels: pull-request-available > Time Spent: 20m > Remaining Estimate: 0h > > Correlation context is populated for the followings: > * Project > * Filter > * Calc > * Correlate > But it is not populated for _Join._ Because of it, using joiner's correlation > id causes below exception > {code:java} > Caused by: > java.lang.NullPointerException > at > org.apache.calcite.rel.rel2sql.SqlImplementor$Context.toSql(SqlImplementor.java:506) > at > org.apache.calcite.rel.rel2sql.SqlImplementor$Context.toSql(SqlImplementor.java:828) > at > org.apache.calcite.rel.rel2sql.SqlImplementor$Context.toSql(SqlImplementor.java:668) > at > org.apache.calcite.rel.rel2sql.SqlImplementor$Context.toSql(SqlImplementor.java:828) > at > org.apache.calcite.rel.rel2sql.SqlImplementor$Context.toSql(SqlImplementor.java:668) > at > org.apache.calcite.rel.rel2sql.RelToSqlConverter.visit(RelToSqlConverter.java:213) > ... 65 more > {code} -- This message was sent by Atlassian Jira (v8.3.4#803005)