[DRILL-18] Parser has some breakage

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Invalid
• Fix Version/s: 0.4.0
• Assignee: Unassigned
• Reporter: Ted Dunning
• Created: 13/Dec/12 12:47
• Updated: 08/Oct/14 04:14
• Resolved: 15/May/14 17:56

Description

Hi, I wrote some codes for query parser. These diffs are aimed to pass test
case of query parser, especially org.apache.drill.parsers.DrqlParserTest.
To do that, I modified the DrqlAntlr.g and AntlrParser.java.

• Add some rules (N_AGGREGATE_FUNCTION, aggregateFunc, ... )
• Swap groupbyClause rule and havingCaluse rule in selectStatement
• Modify some parsing routine in AntlrParser.java

I think that the defined grammar still has some problems even if this diff
is applied. Also, it is not important thing. However, you can pass test
case