ATTACH TABLE constrained
(
    `URL` String, 
    CONSTRAINT is_yandex CHECK domainWithoutWWW(URL) = domainWithoutWWW(URL), 
    CONSTRAINT is_utf8 CHECK isValidUTF8(URL)
)
ENGINE = TinyLog;

insert into constrained values ('a');

Code: 368. DB::Exception: Received from localhost:9000. DB::Exception: Bad cast from type DB::ColumnConst to DB::ColumnVector<char8_t>. Stack trace