Li Jin created SPARK-25216:
------------------------------
Summary: Provide better error message when a column contains dot
and needs backticks quote
Key: SPARK-25216
URL: https://issues.apache.org/jira/browse/SPARK-25216
Project: Spark
Issue Type: Improvement
Components: SQL
Affects Versions: 2.4.0
Reporter: Li Jin
The current error message is often confusing to a new Spark user that a column
containing "." needs backticks quote.
For example, the current message looks like:
{code:java}
Cannot resolve column name "a.b" among (a.b)
{code}
We could improve the error message to, e.g:
{code:java}
Cannot resolve column name "a.b" among (a.b). Try adding backticks to the
column name, i.e., `a.b`;
{code}
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