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From "Paul Rogers (JIRA)" <j...@apache.org>
Subject [jira] [Created] (DRILL-5555) CSV file without headers: "SELECT a" fails, "SELECT columns, a" succeeds
Date Mon, 29 May 2017 23:48:04 GMT
Paul Rogers created DRILL-5555:
----------------------------------

             Summary: CSV file without headers: "SELECT a" fails, "SELECT columns, a" succeeds
                 Key: DRILL-5555
                 URL: https://issues.apache.org/jira/browse/DRILL-5555
             Project: Apache Drill
          Issue Type: Bug
    Affects Versions: 1.10.0
            Reporter: Paul Rogers
            Priority: Minor


Consider the case discussed in DRILL-5554. Do exactly the same setup, but with a slightly
different query. The results are much different.

Create a CSV file without headers:

{code}
10,foo,bar
{code}

Use a CSV storage plugin configured to not skip the first line and not read headers.

Then, issue the following query:

{code}
SELECT columns, a FROM `dfs.data.example.csv`
{code}

Result:

{code}
columns,a
["10","foo","bar"],null
{code}

Schema:

{code}
columns(VARCHAR:REPEATED), 
a(INT:OPTIONAL)
{code}

Since the query in DRILL-5554 fails:
{code}
SELECT a FROM ...
{code}

Expected the query described here to also fail, for a similar reason.



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