Re: What is the best way to create Primary Key on a large table in Postgresql 9.5?

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От David G. Johnston
Тема Re: What is the best way to create Primary Key on a large table in Postgresql 9.5?
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Msg-id CAKFQuwau_S_7+sR87uE_D51Ta4BB3ySHyXbWWoxFur+AsQe-qQ@mail.gmail.com
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Ответ на Re: What is the best way to create Primary Key on a large table in Postgresql 9.5?  (Samed YILDIRIM <samed@reddoc.net>)
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On Thu, Aug 18, 2016 at 5:05 PM, Samed YILDIRIM <samed@reddoc.net> wrote:

Hi Ravi,

You can use CREATE INDEX with CONCURRENTLY keyword. It will not lock your table during the process.

​After which you would do:

ALTER TABLE tbl ADD PRIMARY KEY USING INDEX <index name from above>;
​
 
​https://www.postgresql.org/docs/9.5/static/sql-altertable.html​

See the note on the linked page advising this exact procedure.

David J. 

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