[SPARK-13694][SQL] QueryPlan.expressions should always include all expressions #11532
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What changes were proposed in this pull request?
It's weird that expressions don't always have all the expressions in it. This PR marks
QueryPlan.expressions
final to forbid sub classes overriding it to exclude some expressions. Currently onlyGenerate
override it, we can useproducedAttributes
to fix the unresolved attribute problem for it.Note that this PR doesn't fix the problem in #11497
How was this patch tested?
existing tests.