ydb/yql/essentials/tests/sql/suites/expr/struct_literal.sql

/* syntax version 1 */
/* postgres can not */
select <||>, <|,|>, <|
    CAST(Unicode::ToUpper("a"u) AS String):Unicode::ToUpper("b"u),
    c:false,
    "e":7,
    `g`:2.0,
    |>