Support Row Value Expressions pushdown

[dc-orz]

Version: 466
SQL:

SELECT
  ...
FROM
  ...
WHERE
  (c1, c2) IN (
    SELECT
      ...,
      ...
  )

Got a predicate with the following structure:

• Comparison: EQUAL
  • Row
    • Symbol: c1
    • Symbol: c2
  • Constant: Row

This predicate can not be convert to TupleDomain or Connector Expression in PushPredicateIntoTableScan. Think we could add some row comparison magic in DomainTranslator and ConnectorExpressionTranslator?