ydb/yql/essentials/tests/s-expressions/suites/ImplictCasts/ImplicitEqualsOverList.yqls

(
(let config (DataSource 'config))

(let res_sink (DataSink 'result))

# List<Uint16> -> List<Int16> (false)
(let value (AsList (Uint16 '32767)))
(let value (Append value (Uint16 '32768)))
(let commonType (ListType (DataType 'Int16)))
(let imlicitEqualsResult (Exists (StrictCast value commonType)))
(let world (Write! world res_sink (Key) imlicitEqualsResult '('('type))))

# List<Uint16> -> List<UInt32> (true)
(let value (AsList (Uint16 '32767)))
(let value (Append value (Uint16 '32768)))
(let commonType (ListType (DataType 'Uint32)))
(let imlicitEqualsResult (Exists (StrictCast value commonType)))
(let world (Write! world res_sink (Key) imlicitEqualsResult '('('type))))

(let world (Commit! world res_sink))
(return world)

)