JavaCC is a top-down parser. This means it needs to know which rule to
go into before it goes. It sees 'insert' and thinks 'hey, looks like
this could be a SqlInsert()', and never bothers going into
SqlInsertWithPartition.
Top-down parsers are, in general, a Good Thing, because they are
efficient.
I used extension to the parser through freemarker template.
I have added parsing SqlInsertWithPartition() for new sql construct (insert
into t2 (c1, c2) partition by (c1) select c1, c2 from t1)
By I keep getting the following error:
PARSE ERROR: Encountered "partition" at line 1, column 30.
Though
Hopefully you know how to make extensions to the parser; see
https://issues.apache.org/jira/browse/PHOENIX-1706 for instance. You
can add an extension to INSERT syntax that is an empty string in
Calcite's version of the parser, something else in your version of the
parser. You might need to add a n
