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Re: Converting char to varchar automatically - Mailing list pgsql-general

From Sergey Konoplev
Subject Re: Converting char to varchar automatically
Date
Msg-id CAL_0b1vZuDn5uZh5_KkTbHXjtZ-eKQZ6YjAF9UotJVn5w1TWJQ@mail.gmail.com
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In response to Re: Converting char to varchar automatically  (Tom Lane <tgl@sss.pgh.pa.us>)
Responses Re: Converting char to varchar automatically  (Tom Lane <tgl@sss.pgh.pa.us>)
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On Tue, Oct 7, 2014 at 10:16 AM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
> Sergey Konoplev <gray.ru@gmail.com> writes:
>> BTW, where can I find a list of type1->type2 pairs that doesn't
>> require full table lock for conversion?
>
> There aren't any.  Sometimes you can skip a table rewrite, but that
> doesn't mean that a lesser lock is possible.

Oh, sorry, it was a typo, I meant "that doesn't require a full table rewrite".

--
Kind regards,
Sergey Konoplev
PostgreSQL Consultant and DBA

http://www.linkedin.com/in/grayhemp
+1 (415) 867-9984, +7 (499) 346-7196, +7 (988) 888-1979
gray.ru@gmail.com

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