Re: ZStandard (with dictionaries) compression support for TOAST compression

Michael, what do you think of this approach (extending varatt_external)

vs extending varatt itself by new tag and structure? The second approach

allows more flexibility, independence of existing structure without modifying

varatt_4b and is extensible further. I mentioned it above (extending

the TOAST pointer), and it could be implemented more easily and in a less

confusing way.

I'm +1 on storing dictionary somewhere around actual data (not necessary

in the data storage area itself) but strongly against new catalog table

with dictionaries - it involves a lot of side effects, including locks while working

with this table resulting in performance degradation, and so on.