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42 lines
2.0 KiB
PL/PgSQL
42 lines
2.0 KiB
PL/PgSQL
-- $NetBSD: fix.sql,v 1.2 2011/10/12 16:24:39 yamt Exp $
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-- Copyright (c)2011 YAMAMOTO Takashi,
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-- All rights reserved.
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--
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-- Redistribution and use in source and binary forms, with or without
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-- modification, are permitted provided that the following conditions
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-- are met:
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-- 1. Redistributions of source code must retain the above copyright
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-- notice, this list of conditions and the following disclaimer.
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-- 2. Redistributions in binary form must reproduce the above copyright
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-- notice, this list of conditions and the following disclaimer in the
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-- documentation and/or other materials provided with the distribution.
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--
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-- THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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-- ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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-- IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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-- ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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-- FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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-- DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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-- OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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-- HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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-- LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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-- OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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-- SUCH DAMAGE.
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-- remove orphaned files unless there's mount_pgfs connectd this db
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BEGIN;
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SET TRANSACTION ISOLATION LEVEL REPEATABLE READ;
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SET search_path TO pgfs;
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WITH
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pgfs_clients AS (SELECT -count(*) FROM pg_stat_activity WHERE
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application_name = 'pgfs' AND datid IN (SELECT oid FROM pg_database
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WHERE datname = current_database())),
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files_to_remove AS (DELETE FROM file WHERE nlink IN (SELECT * FROM pgfs_clients)
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RETURNING fileid),
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removed_files AS (DELETE FROM datafork WHERE fileid IN (SELECT * FROM
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files_to_remove) RETURNING fileid, loid)
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SELECT fileid AS "orphaned files" FROM removed_files WHERE lo_unlink(loid) = 1;
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COMMIT;
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