Re: Syntax question
От | Michael Brusser |
---|---|
Тема | Re: Syntax question |
Дата | |
Msg-id | DEEIJKLFNJGBEMBLBAHCGEAOELAA.michael@synchronicity.com обсуждение исходный текст |
Ответ на | Syntax question (Christopher Kings-Lynne <chriskl@familyhealth.com.au>) |
Список | pgsql-hackers |
For what it's worth, I like the second form better. Mike > -----Original Message----- > From: pgsql-hackers-owner@postgresql.org > [mailto:pgsql-hackers-owner@postgresql.org]On Behalf Of Christopher > Kings-Lynne > Sent: Sunday, May 23, 2004 6:08 AM > To: PostgreSQL-development > Subject: [HACKERS] Syntax question > > > Here are the two syntaxes we can use for turning off clustering: > > 1) ALTER TABLE / SET WITHOUT CLUSTER > > This will turn off clusting on any index on the table that has it > enabled. It won't recurse so as to match the CLUSTER ON syntax. > However, this form makes the non-standardy SET WITHOUT form more > emphasised... > > 2) ALTER TABLE / DROP CLUSTER ON idx > > I like this form, however to make it work, we need to bump CLUSTER to > being a reserved keyword. This form looks more like SQL standard, and > is related to the CLUSTER ON form. > > Which one do we want? > > Chris > > > ---------------------------(end of broadcast)--------------------------- > TIP 9: the planner will ignore your desire to choose an index scan if your > joining column's datatypes do not match >
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