Wenchen Fan created SPARK-26215:
-----------------------------------
Summary: define reserved keywords after SQL standard
Key: SPARK-26215
URL: https://issues.apache.org/jira/browse/SPARK-26215
Project: Spark
Issue Type: Improvement
Components: SQL
Affects Versions: 2.4.0
Reporter: Wenchen Fan
There are 2 kinds of SQL keywords: reserved and non-reserved. Reserved keywords
can't be used as identifiers.
In Spark SQL, we are too tolerant about non-reserved keywors. A lot of keywords
are non-reserved and sometimes it cause ambiguity (IIRC we hit a problem when
improving the INTERVAL syntax).
I think it will be better to just follow other databases or SQL standard to
define reserved keywords, so that we don't need to think very hard about how to
avoid ambiguity.
For reference: https://www.postgresql.org/docs/8.1/sql-keywords-appendix.html
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
