[HIVE-15765] Support bracketed comments

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.3.0
• Labels: TODOC2.2
• Assignee: Gunther Hagleitner
• Reporter: Gunther Hagleitner
• Created: 31/Jan/17 08:00
• Updated: 21/Jul/17 18:36
• Resolved: 03/Feb/17 00:28

Description

C-style comments are in the SQL spec as well as supported by all major DBs. The are useful for inline annotation of the SQL. We should have them too.

Example:

select
/*+ MAPJOIN(a) */ /* mapjoin hint */
a /* column */
from foo join bar;