[jira] [Updated] (CALCITE-4579) In Piglet, conversion of Pig Latin scripts that contain FLATTEN and STRSPLIT operators fails with ClassCastException

["Julian Hyde (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CALCITE-4579?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Julian Hyde updated CALCITE-4579:
---------------------------------
    Summary: In Piglet, conversion of Pig Latin scripts that contain FLATTEN and STRSPLIT operators fails with ClassCastException  (was: Conversion of PIG scripts containing FLATTEN and STRSPLIT commands fails with ClassCastException)

> In Piglet, conversion of Pig Latin scripts that contain FLATTEN and STRSPLIT operators fails with ClassCastException
> --------------------------------------------------------------------------------------------------------------------
>
>                 Key: CALCITE-4579
>                 URL: https://issues.apache.org/jira/browse/CALCITE-4579
>             Project: Calcite
>          Issue Type: Bug
>          Components: piglet
>            Reporter: mahesh kumar behera
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 1.27.0
>
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> In the piglet component, while converting a Pig Latin script to SQL, the conversion expects the child to be a SqlIdentifier. But a SqlBasicCall is returned.
> Script
> {code:java}
> A = LOAD 'scott.DEPT' as (DEPTNO:int, DNAME:chararray, LOC:CHARARRAY);
> B = FOREACH A GENERATE FLATTEN(STRSPLIT(DNAME, ',')) as NAMES;
>  {code}
> {noformat}
>     java.lang.ClassCastException: org.apache.calcite.sql.SqlBasicCall cannot be cast to org.apache.calcite.sql.SqlIdentifier
>         at org.apache.calcite.rel.rel2sql.SqlImplementor$Context.toSql(SqlImplementor.java:720)
>         at org.apache.calcite.rel.rel2sql.RelToSqlConverter.visit(RelToSqlConverter.java:351)
>         at org.apache.calcite.util.ReflectUtil$2.invoke(ReflectUtil.java:531)
>         at org.apache.calcite.rel.rel2sql.RelToSqlConverter.dispatch(RelToSqlConverter.java:134)
>         at org.apache.calcite.rel.rel2sql.RelToSqlConverter.visitInput(RelToSqlConverter.java:142)
>         at org.apache.calcite.rel.rel2sql.SqlImplementor.visitInput(SqlImplementor.java:185)
>         at org.apache.calcite.rel.rel2sql.SqlImplementor.visitInput(SqlImplementor.java:173)
>         at org.apache.calcite.rel.rel2sql.SqlImplementor.visitRoot(SqlImplementor.java:153)
>         at org.apache.calcite.piglet.PigConverter.pigToSql(PigConverter.java:244)
>         at org.apache.calcite.piglet.PigConverter.pigToSql(PigConverter.java:227)
>         at org.apache.calcite.test.PigRelOpTest$Fluent.assertSql(PigRelOpTest.java:100)
>         at org.apache.calcite.test.PigRelOpTest$Fluent.access$200(PigRelOpTest.java:64)
>         at org.apache.calcite.test.PigRelOpTest.testUdf(PigRelOpTest.java:286) {noformat}



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