Ted Dunning created DRILL-197:
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Summary: Difference between single and double quotes not clear and
error messages are opaque
Key: DRILL-197
URL: https://issues.apache.org/jira/browse/DRILL-197
Project: Apache Drill
Issue Type: Bug
Reporter: Ted Dunning
The following query fails:
{code}
select _MAP["N_REGIONKEY"]
from "nation.parquet"
{code}
but the following very similar query succeeds:
{code}
select _MAP['N_REGIONKEY']
from "nation.parquet"
{code}
The difference is in the use of single or double quotes for the index of
{{_MAP}}
I certainly don't know what the difference is here, but it seems important to
either resolve or document.
Conversely, this query also fails, but this time because double quotes *have*
to be used.
{code}
select _MAP['N_REGIONKEY']
from 'nation.parquet';
{code}
This is pretty perverse.
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