wutiangan opened a new issue #3596:
URL: https://github.com/apache/incubator-doris/issues/3596
### How to produce
SQL: select * from baseall where (a = 1) or (a = 1 and B = 2)
this SQL throws Unexpected exception: nul
### reason
if "(a = 1)" is extracted as a common factor expression in
OrCompoundPredicate predicate fold Stage, then the first binaryPredicate of
OrCompoundPredicate "(a = 1)" has no expression when the common factor
expression is remove.d Exception occurs when building composite predicate, for
the left expression list size is zero.
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