Strange row locking - question - Mailing list pgsql-general

From Vaclav Kulakovsky
Subject Strange row locking - question
Date
Msg-id Pine.LNX.4.44.0204111557180.29583-100000@vigo.diz
Whole thread Raw
Responses Re: Strange row locking - question  (Tom Lane <tgl@sss.pgh.pa.us>)
Re: Strange row locking - question  (Stephan Szabo <sszabo@megazone23.bigpanda.com>)
List pgsql-general
Hi all,

When I update row in table with foring key, referenced row is locked. I
can see it in log file:

DEBUG:  query: update entry set sometext = 'aaa' where id = 1;
DEBUG:  query: SELECT 1 FROM ONLY "languages" WHERE "id" = $1 FOR UPDATE
OF "languages"

When I execute update second time I receive only this:

query: update entry set sometext = 'aaa' where id = 1;

Referenced row is locked only first time ? This behavior looks me little
bit strange. Can anybody explain it ?

Regards,

Vaclav


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