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

(
(let config (DataSource 'config))

(let res_sink (DataSink 'result))
(let data (AsList (AsDict '((Uint32 '12) (Uint32 '34)))))
(let data (Append data (AsDict '((Uint32 '56) (Int64 '78)))))
(let dt (DictType (DataType 'Uint32) (DataType 'Int64)))
(let data (Append data (Dict dt '((Uint32 '90) (Int64 '12)))))
(let world (Write! world res_sink (Key) data '('('type))))
(let world (Commit! world res_sink))
(return world)
)