Thanks for reporting this, Vladimir. You can file a JIRA for it.
Best,
Chuwnei
On Wed, Aug 12, 2020 at 12:06 AM Julian Hyde wrote:
> I’m not entirely sure why RelFieldTrimmer doesn’t touch the “*” case.
> Perhaps because its main job is to trim fields, and so if there’s no field
> trimming
I’m not entirely sure why RelFieldTrimmer doesn’t touch the “*” case. Perhaps
because its main job is to trim fields, and so if there’s no field trimming to
be done, it tries to do no harm.
The main code responsible for pruning empty relational operators is
PruneEmptyRules. I think you should
Hi colleagues,
Consider the following query. If the RelFieldTrimmer is applied to this,
then the expression is reduced to an empty LogicalValues:
SELECT field FROM table WHERE TRUE IS FALSE
However, the following query will not be simplified, leaving a table scan
with "always false" filter:
