Re: Much Ado About COUNT(*)
От | Greg Stark |
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Тема | Re: Much Ado About COUNT(*) |
Дата | |
Msg-id | 873bx6yq15.fsf@stark.xeocode.com обсуждение исходный текст |
Ответ на | Re: Much Ado About COUNT(*) (Jeff Davis <jdavis-pgsql@empires.org>) |
Ответы |
Re: Much Ado About COUNT(*)
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Список | pgsql-hackers |
Jeff Davis <jdavis-pgsql@empires.org> writes: > But of course, we all love toast. Everyone needs to make those wide > tables once in a while, and toast does a great job of taking those > worries away in an efficient way. I am just saying that hopefully we > don't have to seqscan a table with wide tuples very often :) I thought toast only handled having individual large columns. So if I have a 2kb text column it'll pull that out of the table for me. But if I have 20 columns each of which have 100 bytes will it still help me? Will it kick in if I define a single column which stores a record type with 20 columns each of which have a 100 byte string? -- greg
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