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https://issues.apache.org/jira/browse/HIVE-9113?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14248235#comment-14248235
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Prabhu Joseph commented on HIVE-9113:
-------------------------------------
Hi Chao,
The subquery inside IN clause does not have from clause. The correct query
is below,
{noformat}
select p.p_partkey, li.suppkey
from (select distinct partkey as p_partkey from lineitem) p join lineitem li on
p.p_partkey = li.partkey
where li.l_linenumber = 1 and
li.l_orderkey in (select l_orderkey from lineitem where l_linenumber =
li.l_linenumber);
{noformat}
> Explain on query failed with NPE
> --------------------------------
>
> Key: HIVE-9113
> URL: https://issues.apache.org/jira/browse/HIVE-9113
> Project: Hive
> Issue Type: Bug
> Components: Query Processor
> Reporter: Chao
>
> Run explain on the following query:
> {noformat}
> select p.p_partkey, li.l_suppkey
> from (select distinct l_partkey as p_partkey from lineitem) p join lineitem
> li on p.p_partkey = li.l_partkey
> where li.l_linenumber = 1 and
> li.l_orderkey in (select l_orderkey where l_linenumber = li.l_linenumber)
> ;
> {noformat}
> gave me NPE:
> {noformat}
> java.lang.NullPointerException
> at
> org.apache.hadoop.hive.ql.parse.QBSubQuery.validateAndRewriteAST(QBSubQuery.java:516)
> at
> org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.genFilterPlan(SemanticAnalyzer.java:2605)
> at
> org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.genBodyPlan(SemanticAnalyzer.java:8866)
> at
> org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.genPlan(SemanticAnalyzer.java:9745)
> at
> org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.genPlan(SemanticAnalyzer.java:9638)
> at
> org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.analyzeInternal(SemanticAnalyzer.java:10125)
> at
> org.apache.hadoop.hive.ql.parse.BaseSemanticAnalyzer.analyze(BaseSemanticAnalyzer.java:221)
> at
> org.apache.hadoop.hive.ql.parse.ExplainSemanticAnalyzer.analyzeInternal(ExplainSemanticAnalyzer.java:74)
> at
> org.apache.hadoop.hive.ql.parse.BaseSemanticAnalyzer.analyze(BaseSemanticAnalyzer.java:221)
> at org.apache.hadoop.hive.ql.Driver.compile(Driver.java:420)
> at org.apache.hadoop.hive.ql.Driver.compile(Driver.java:306)
> at org.apache.hadoop.hive.ql.Driver.compileInternal(Driver.java:1108)
> at org.apache.hadoop.hive.ql.Driver.runInternal(Driver.java:1170)
> at org.apache.hadoop.hive.ql.Driver.run(Driver.java:1045)
> at org.apache.hadoop.hive.ql.Driver.run(Driver.java:1035)
> at org.apache.hadoop.hive.cli.CliDriver.processLocalCmd(CliDriver.java:199)
> at org.apache.hadoop.hive.cli.CliDriver.processCmd(CliDriver.java:151)
> at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:362)
> at org.apache.hadoop.hive.cli.CliDriver.executeDriver(CliDriver.java:720)
> at org.apache.hadoop.hive.cli.CliDriver.run(CliDriver.java:639)
> at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:578)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:606)
> at org.apache.hadoop.util.RunJar.main(RunJar.java:212)
> {noformat}
> Is this query invalid? If so, it should at least give some explanations, not
> just a plain NPE message, and left user clueless.
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