Github user mgaido91 commented on the issue:
https://github.com/apache/spark/pull/22029
@cloud-fan Presto doesn't have structs. Presto has `ROW`. `(a, b) IN
(select x, y ...)` is a valid mutli-value subquery in Presto, while for a
struct (ie. a row) the valid syntax is `row_col IN (select ROW(x,y) ...)`. So
`(a, b)` is never considered a struct value in Presto. Did this answer?
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