Re: Change the bool member of the Query structure to bits
От | Quan Zongliang |
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Тема | Re: Change the bool member of the Query structure to bits |
Дата | |
Msg-id | c82c4dc1-c3a1-45ef-9f22-d9156eb810b4@yeah.net обсуждение исходный текст |
Ответ на | Re: Change the bool member of the Query structure to bits (Tom Lane <tgl@sss.pgh.pa.us>) |
Список | pgsql-hackers |
On 2024/2/20 23:45, Tom Lane wrote: > Quan Zongliang <quanzongliang@yeah.net> writes: >> The Query structure has an increasing number of bool attributes. This is >> likely to increase in the future. And they have the same properties. >> Wouldn't it be better to store them in bits? Common statements don't use >> them, so they have little impact. This also saves memory space. > > I'm -1 on that, for three reasons: > > * The amount of space saved is quite negligible. If queries had many > Query structs then it could matter, but they don't. > > * This causes enough code churn to create a headache for back-patching. > > * This'll completely destroy the readability of these flags in > pprint output. > > I'm not greatly in love with the macro layer you propose, either, > but those details don't matter because I think we should just > leave well enough alone. > > regards, tom lane I get it. Withdraw.
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