[jira] [Updated] (ASTERIXDB-2934) Query fails with internal error

["Dmitry Lychagin (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ASTERIXDB-2934?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Dmitry Lychagin updated ASTERIXDB-2934:
---------------------------------------
    Fix Version/s:     (was: 0.9.7)
                   0.9.8

> Query fails with internal error 
> --------------------------------
>
>                 Key: ASTERIXDB-2934
>                 URL: https://issues.apache.org/jira/browse/ASTERIXDB-2934
>             Project: Apache AsterixDB
>          Issue Type: Bug
>          Components: COMP - Compiler
>    Affects Versions: 0.9.6
>            Reporter: Dmitry Lychagin
>            Assignee: Dmitry Lychagin
>            Priority: Major
>             Fix For: 0.9.8
>
>
> The following query fails with NullPointerException at compile time.
> {noformat}
> SELECT x, y, COUNT(*) AS cnt
> GROUP BY ROLLUP(x, y);
> {noformat}
> Exception
> {noformat}
> java.lang.NullPointerException: Cannot invoke "java.util.List.size()" because "fieldList" is null
>         at org.apache.asterix.lang.sqlpp.visitor.DeepCopyVisitor.copyFieldList(DeepCopyVisitor.java:560) ~[classes/:?]
>         at org.apache.asterix.lang.sqlpp.visitor.DeepCopyVisitor.visit(DeepCopyVisitor.java:319) ~[classes/:?]
>         at org.apache.asterix.lang.sqlpp.visitor.DeepCopyVisitor.visit(DeepCopyVisitor.java:76) ~[classes/:?]
>         at org.apache.asterix.lang.common.clause.GroupbyClause.accept(GroupbyClause.java:109) ~[classes/:?]
>         at org.apache.asterix.lang.sqlpp.visitor.DeepCopyVisitor.visit(DeepCopyVisitor.java:171) ~[classes/:?]
>         at org.apache.asterix.lang.sqlpp.visitor.DeepCopyVisitor.visit(DeepCopyVisitor.java:76) ~[classes/:?]
>         at org.apache.asterix.lang.sqlpp.clause.SelectBlock.accept(SelectBlock.java:55) ~[classes/:?]
>         at org.apache.asterix.lang.sqlpp.util.SqlppRewriteUtil.deepCopy(SqlppRewriteUtil.java:60) ~[classes/:?]
>         at org.apache.asterix.lang.sqlpp.rewrites.visitor.SqlppGroupingSetsVisitor.rewriteMultipleGroupingSets(SqlppGroupingSetsVisitor.java:338) ~[classes/:?]
> {noformat}
> This query has SELECT clause with GROUP BY clause, but without FROM clause.
> This combination should not be allowed. If GROUP BY clause is present then FROM clause should be required. If FROM clause is absent then the only allowed clauses should be SELECT, LET and WHERE. i.e. SELECT ... LET ... WHERE ...



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