Hi calciters ! Look [1] introduces "Support SELECT without FROM syntax"
such syntax can be used with join queries, i.e. SELECT t1.empid FROM emps
t1 LEFT JOIN emps t2 ON (SELECT t2.empid)<=100
Can anyone review fix or reject it, or reject this lexical construction at
all, thus i can close the ticket with clear soul )
thanks !
[1] https://issues.apache.org/jira/browse/CALCITE-1120
[2] https://issues.apache.org/jira/browse/CALCITE-4833
fixed: gc pressure part still need to additional time, revert this part,
all other waiting for review.
Guys i found that some kinds of nested subqueries are failed [1].
i.e. SELECT t1.empid FROM emps t1 LEFT JOIN emps t2 ON (SELECT
t2.empid)<=100
Fix a little bit hack as for me, but all tests are done.
Additionally i fix some redundant gc pressure a bit.
Plz make a review.
thanks !
[1] https://issues.apache.org/jira/browse/CALCITE-4833
