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List: pgsql-bugs
Subject: [BUGS] BUG #8395: empty aclitem arrays are considered 1-dimensional
From: bashtanov () imap ! cc
Date: 2013-08-23 16:17:55
Message-ID: E1VCu3f-0000Hh-JU () wrigleys ! postgresql ! org
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The following bug has been logged on the website:
Bug reference: 8395
Logged by: Alexey Bashtanov
Email address: bashtanov@imap.cc
PostgreSQL version: 9.1.9
Operating system: Ubuntu linux 12.04
Description:
Empty aclitem arrays are considered 1-dimensional, but in general empty
arrays are 0-dimensional. It leads to the following problems:
STEPS TO REPRODUCE
1) install fresh postgres, connect to it
2) select relacl, relacl = '{}'::aclitem[], (select aclexplode(relacl)),
array_length(relacl, 1) from pg_class where oid::regclass =
'pg_largeobject'::regclass;
3) select aclexplode('{}'::aclitem[]);
EXPECTED
2) {}, false, null, null
3) no error, zero-lines table
GOT
2) relacl | ?column? | ?column? | array_length
--------+----------+----------+--------------
{} | f | | 0
3) ERROR: ACL arrays must be one-dimensional
also it can be reproduced on some 9.2 version
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