Github user jihoonson commented on the pull request:
https://github.com/apache/tajo/pull/719#issuecomment-137691732
The following query on JDBC table is failed.
```
2015-09-04 18:42:24,723 INFO org.apache.tajo.storage.jdbc.JdbcScanner:
Executed SQL Statement: SELECT FROM customer
2015-09-04 18:42:24,728 ERROR org.apache.tajo.worker.TaskImpl: internal
error: ERROR: syntax error at or near "FROM"
Position: 9
org.apache.tajo.exception.TajoInternalError: internal error: ERROR: syntax
error at or near "FROM"
Position: 9
at
org.apache.tajo.storage.jdbc.JdbcScanner.executeQueryAndGetIter(JdbcScanner.java:249)
at
org.apache.tajo.storage.jdbc.JdbcScanner.next(JdbcScanner.java:102)
at
org.apache.tajo.engine.planner.physical.FullScanIterator.hasNext(FullScanIterator.java:39)
at
org.apache.tajo.engine.planner.physical.SeqScanExec.next(SeqScanExec.java:258)
at
org.apache.tajo.engine.planner.physical.HashAggregateExec.compute(HashAggregateExec.java:52)
at
org.apache.tajo.engine.planner.physical.HashAggregateExec.next(HashAggregateExec.java:84)
at
org.apache.tajo.engine.planner.physical.HashShuffleFileWriteExec.next(HashShuffleFileWriteExec.java:102)
at org.apache.tajo.worker.TaskImpl.run(TaskImpl.java:403)
at org.apache.tajo.worker.TaskContainer.run(TaskContainer.java:65)
at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
2015-09-04 18:42:24,728 INFO org.apache.tajo.worker.TaskAttemptContext:
Query status of ta_1441359373738_0003_000001_000000_02 is changed to TA_FAILED
```
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