[DRILL-2827] Allow implicit cast from strings to boolean

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.8.0
• Fix Version/s: 0.9.0
• Component/s: Functions - Drill
• Assignee: Chun Chang
• Reporter: Aman Sinha
• Created: 19/Apr/15 15:15
• Updated: 28/Apr/15 19:09
• Resolved: 21/Apr/15 17:15

Description

The following query fails:

select * from dfs.`bool.json` where key = 'true';
Error in expression at index -1.  Error: Missing function implementation: [castINT(BIT-REQUIRED)].  Full expression: --UNKNOWN EXPRESSION--..

The reason is that a prior fix for DRILL-2590 removed the implicit casting from string literals to boolean. That fix is valid for non-string values.