> On 20 September 2017 at 17:19, Arthur Zakirov <a.zaki...@postgrespro.ru> wrote: > As a conclusion: > * additional field are needed to pg_type for *_fetch and *_assign functions to solve dependency problem
One last thing that I need to clarify. Initially there was an idea to minimize changes in `pg_type` - that's why I added only one column there that contains an OID of main subscripting function (and everything else you should find out inside it). But I have no objections about adding more columns if everyone is ok with that. Basically pros and cons (marked as + and -): one new column in `pg_type`: * less intrusive (+) * it's neccessary to make a dependency record between subscripting functions explicitly (-) three new columns in `pg_type`: * more intrusive (-) * we can create a dependency record between subscripting functions simultaneously with a custom type creation (+) * custom subscripting code does not need to resolve `fetch` and `assign` functions (+)
