/usr/share/postgresql/9.3/contrib/xor_aggregate.sql is in postgresql-comparator 2.2.2-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 | -- $Id: xor_aggregate.sql 1141 2012-08-09 12:22:18Z fabien $
--
-- add XOR aggregate to PostgreSQL
--
-- default behavior for strict functions used: NULLs are ignored...
DROP AGGREGATE IF EXISTS XOR(bit);
CREATE AGGREGATE XOR(
BASETYPE = BIT,
SFUNC = bitxor,
STYPE = BIT
);
DROP AGGREGATE IF EXISTS XOR(INT2);
CREATE AGGREGATE XOR(
BASETYPE = INT2,
SFUNC = int2xor,
STYPE = INT2
);
DROP AGGREGATE IF EXISTS XOR(INT4);
CREATE AGGREGATE XOR(
BASETYPE = INT4,
SFUNC = int4xor,
STYPE = INT4
);
DROP AGGREGATE IF EXISTS XOR(INT8);
CREATE AGGREGATE XOR(
BASETYPE = INT8,
SFUNC = int8xor,
STYPE = INT8
);
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