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https://issues.apache.org/jira/browse/CALCITE-6604?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17885725#comment-17885725
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Julian Hyde commented on CALCITE-6604:
--------------------------------------
Can you change the summary so that it makes sense to users? Talk about SQL not
Java classes.
> Add support for SqlWindowTableFunction in RelToSql Converter
> ------------------------------------------------------------
>
> Key: CALCITE-6604
> URL: https://issues.apache.org/jira/browse/CALCITE-6604
> Project: Calcite
> Issue Type: New Feature
> Components: core
> Reporter: Dongsheng He
> Assignee: Dongsheng He
> Priority: Minor
>
> Converting the `RelNode` with `SqlWindowTableFunction` will fail with
> exception:
> For example:{{{{}}{}}}
> {code:java}
> SELECT * FROM TABLE(TUMBLE(TABLE employee, DESCRIPTOR(hire_date), INTERVAL
> '1' MINUTE)){code}
>
>
> {code:java}
>
> java.lang.IndexOutOfBoundsException: Index 3 out of bounds for length 1
> at
> java.base/jdk.internal.util.Preconditions.outOfBounds(Preconditions.java:100)
> at
> java.base/jdk.internal.util.Preconditions.outOfBoundsCheckIndex(Preconditions.java:106)
> at
> java.base/jdk.internal.util.Preconditions.checkIndex(Preconditions.java:302)
> at java.base/java.util.Objects.checkIndex(Objects.java:359)
> at java.base/java.util.ArrayList.get(ArrayList.java:427)
> at
> org.apache.calcite.rel.rel2sql.SqlImplementor$TableFunctionScanContext.field(SqlImplementor.java:1671)
> at
> org.apache.calcite.rel.rel2sql.SqlImplementor$Context.toSql(SqlImplementor.java:654)
> at
> org.apache.calcite.rel.rel2sql.SqlImplementor$Context.toSql(SqlImplementor.java:1130)
> at
> org.apache.calcite.rel.rel2sql.SqlImplementor$Context.callToSql(SqlImplementor.java:830)
> at
> org.apache.calcite.rel.rel2sql.SqlImplementor$Context.toSql(SqlImplementor.java:803)
> at
> org.apache.calcite.rel.rel2sql.SqlImplementor$Context.toSql(SqlImplementor.java:1130)
> at
> org.apache.calcite.rel.rel2sql.SqlImplementor$Context.callToSql(SqlImplementor.java:830)
> at
> org.apache.calcite.rel.rel2sql.SqlImplementor$Context.toSql(SqlImplementor.java:803)
> at
> org.apache.calcite.rel.rel2sql.RelToSqlConverter.visit(RelToSqlConverter.java:1295)
>
> {code}
>
> The cause of this issue is:
> {code:java}
> visit(TableFunctionScan e) {
> ...
> final Context context = tableFunctionScanContext(inputSqlNodes);
> ...
> }{code}
> `tableFunctionScanContext` only refer `inputSqlNodes` to fields, when handle
> `DESCRIPTOR(hire_date)`, the `hire_date` is a `RexInputRef` with index 3,
> but there is only one field (`inputSqlNodes`) , it cause a
> IndexOutOfBoundsException.
>
>
>
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