Pengcheng Xiong created HIVE-14872: -------------------------------------- Summary: Deprecate the configuration HIVE_SUPPORT_SQL11_RESERVED_KEYWORDS Key: HIVE-14872 URL: https://issues.apache.org/jira/browse/HIVE-14872 Project: Hive Issue Type: Sub-task Reporter: Pengcheng Xiong Assignee: Pengcheng Xiong
The main purpose for the configuration of HIVE_SUPPORT_SQL11_RESERVED_KEYWORDS is for backward compatibility because a lot of reserved key words has been used as identifiers in the previous releases. We already have had several releases with this configuration. Now when I tried to add new set operators to the parser, ANTLR is always complaining "code too large". I think it is time to remove this configuration. (1) It will simplify the parser logic and largely reduce the size of generated parser code; (2) it leave space for new features, especially those which require parser changes. -- This message was sent by Atlassian JIRA (v6.3.4#6332)