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74dfe58a59
For a long time, indxpath.c has had the ability to extract derived (lossy) index conditions from certain operators such as LIKE. For just as long, it's been obvious that we really ought to make that capability available to extensions. This commit finally accomplishes that, by adding another API for planner support functions that lets them create derived index conditions for their functions. As proof of concept, the hardwired "special index operator" code formerly present in indxpath.c is pushed out to planner support functions attached to LIKE and other relevant operators. A weak spot in this design is that an extension needs to know OIDs for the operators, datatypes, and opfamilies involved in the transformation it wants to make. The core-code prototypes use hard-wired OID references but extensions don't have that option for their own operators etc. It's usually possible to look up the required info, but that may be slow and inconvenient. However, improving that situation is a separate task. I want to do some additional refactorization around selfuncs.c, but that also seems like a separate task. Discussion: https://postgr.es/m/15193.1548028093@sss.pgh.pa.us
158 lines
6.8 KiB
SQL
158 lines
6.8 KiB
SQL
--
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-- INET
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--
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-- prepare the table...
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DROP TABLE INET_TBL;
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CREATE TABLE INET_TBL (c cidr, i inet);
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INSERT INTO INET_TBL (c, i) VALUES ('192.168.1', '192.168.1.226/24');
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INSERT INTO INET_TBL (c, i) VALUES ('192.168.1.0/26', '192.168.1.226');
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INSERT INTO INET_TBL (c, i) VALUES ('192.168.1', '192.168.1.0/24');
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INSERT INTO INET_TBL (c, i) VALUES ('192.168.1', '192.168.1.0/25');
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INSERT INTO INET_TBL (c, i) VALUES ('192.168.1', '192.168.1.255/24');
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INSERT INTO INET_TBL (c, i) VALUES ('192.168.1', '192.168.1.255/25');
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INSERT INTO INET_TBL (c, i) VALUES ('10', '10.1.2.3/8');
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INSERT INTO INET_TBL (c, i) VALUES ('10.0.0.0', '10.1.2.3/8');
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INSERT INTO INET_TBL (c, i) VALUES ('10.1.2.3', '10.1.2.3/32');
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INSERT INTO INET_TBL (c, i) VALUES ('10.1.2', '10.1.2.3/24');
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INSERT INTO INET_TBL (c, i) VALUES ('10.1', '10.1.2.3/16');
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INSERT INTO INET_TBL (c, i) VALUES ('10', '10.1.2.3/8');
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INSERT INTO INET_TBL (c, i) VALUES ('10', '11.1.2.3/8');
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INSERT INTO INET_TBL (c, i) VALUES ('10', '9.1.2.3/8');
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INSERT INTO INET_TBL (c, i) VALUES ('10:23::f1', '10:23::f1/64');
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INSERT INTO INET_TBL (c, i) VALUES ('10:23::8000/113', '10:23::ffff');
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INSERT INTO INET_TBL (c, i) VALUES ('::ffff:1.2.3.4', '::4.3.2.1/24');
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-- check that CIDR rejects invalid input:
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INSERT INTO INET_TBL (c, i) VALUES ('192.168.1.2/30', '192.168.1.226');
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INSERT INTO INET_TBL (c, i) VALUES ('1234::1234::1234', '::1.2.3.4');
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-- check that CIDR rejects invalid input when converting from text:
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INSERT INTO INET_TBL (c, i) VALUES (cidr('192.168.1.2/30'), '192.168.1.226');
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INSERT INTO INET_TBL (c, i) VALUES (cidr('ffff:ffff:ffff:ffff::/24'), '::192.168.1.226');
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SELECT '' AS ten, c AS cidr, i AS inet FROM INET_TBL;
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-- now test some support functions
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SELECT '' AS ten, i AS inet, host(i), text(i), family(i) FROM INET_TBL;
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SELECT '' AS ten, c AS cidr, broadcast(c),
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i AS inet, broadcast(i) FROM INET_TBL;
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SELECT '' AS ten, c AS cidr, network(c) AS "network(cidr)",
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i AS inet, network(i) AS "network(inet)" FROM INET_TBL;
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SELECT '' AS ten, c AS cidr, masklen(c) AS "masklen(cidr)",
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i AS inet, masklen(i) AS "masklen(inet)" FROM INET_TBL;
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SELECT '' AS four, c AS cidr, masklen(c) AS "masklen(cidr)",
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i AS inet, masklen(i) AS "masklen(inet)" FROM INET_TBL
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WHERE masklen(c) <= 8;
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SELECT '' AS six, c AS cidr, i AS inet FROM INET_TBL
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WHERE c = i;
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SELECT '' AS ten, i, c,
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i < c AS lt, i <= c AS le, i = c AS eq,
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i >= c AS ge, i > c AS gt, i <> c AS ne,
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i << c AS sb, i <<= c AS sbe,
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i >> c AS sup, i >>= c AS spe,
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i && c AS ovr
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FROM INET_TBL;
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SELECT max(i) AS max, min(i) AS min FROM INET_TBL;
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SELECT max(c) AS max, min(c) AS min FROM INET_TBL;
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-- check the conversion to/from text and set_netmask
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SELECT '' AS ten, set_masklen(inet(text(i)), 24) FROM INET_TBL;
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-- check that btree index works correctly
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CREATE INDEX inet_idx1 ON inet_tbl(i);
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SET enable_seqscan TO off;
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EXPLAIN (COSTS OFF)
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SELECT * FROM inet_tbl WHERE i<<'192.168.1.0/24'::cidr;
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SELECT * FROM inet_tbl WHERE i<<'192.168.1.0/24'::cidr;
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EXPLAIN (COSTS OFF)
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SELECT * FROM inet_tbl WHERE i<<='192.168.1.0/24'::cidr;
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SELECT * FROM inet_tbl WHERE i<<='192.168.1.0/24'::cidr;
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EXPLAIN (COSTS OFF)
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SELECT * FROM inet_tbl WHERE '192.168.1.0/24'::cidr >>= i;
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SELECT * FROM inet_tbl WHERE '192.168.1.0/24'::cidr >>= i;
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EXPLAIN (COSTS OFF)
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SELECT * FROM inet_tbl WHERE '192.168.1.0/24'::cidr >> i;
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SELECT * FROM inet_tbl WHERE '192.168.1.0/24'::cidr >> i;
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SET enable_seqscan TO on;
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DROP INDEX inet_idx1;
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-- check that gist index works correctly
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CREATE INDEX inet_idx2 ON inet_tbl using gist (i inet_ops);
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SET enable_seqscan TO off;
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SELECT * FROM inet_tbl WHERE i << '192.168.1.0/24'::cidr ORDER BY i;
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SELECT * FROM inet_tbl WHERE i <<= '192.168.1.0/24'::cidr ORDER BY i;
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SELECT * FROM inet_tbl WHERE i && '192.168.1.0/24'::cidr ORDER BY i;
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SELECT * FROM inet_tbl WHERE i >>= '192.168.1.0/24'::cidr ORDER BY i;
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SELECT * FROM inet_tbl WHERE i >> '192.168.1.0/24'::cidr ORDER BY i;
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SELECT * FROM inet_tbl WHERE i < '192.168.1.0/24'::cidr ORDER BY i;
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SELECT * FROM inet_tbl WHERE i <= '192.168.1.0/24'::cidr ORDER BY i;
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SELECT * FROM inet_tbl WHERE i = '192.168.1.0/24'::cidr ORDER BY i;
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SELECT * FROM inet_tbl WHERE i >= '192.168.1.0/24'::cidr ORDER BY i;
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SELECT * FROM inet_tbl WHERE i > '192.168.1.0/24'::cidr ORDER BY i;
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SELECT * FROM inet_tbl WHERE i <> '192.168.1.0/24'::cidr ORDER BY i;
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-- test index-only scans
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EXPLAIN (COSTS OFF)
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SELECT i FROM inet_tbl WHERE i << '192.168.1.0/24'::cidr ORDER BY i;
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SELECT i FROM inet_tbl WHERE i << '192.168.1.0/24'::cidr ORDER BY i;
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SET enable_seqscan TO on;
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DROP INDEX inet_idx2;
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-- check that spgist index works correctly
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CREATE INDEX inet_idx3 ON inet_tbl using spgist (i);
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SET enable_seqscan TO off;
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SELECT * FROM inet_tbl WHERE i << '192.168.1.0/24'::cidr ORDER BY i;
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SELECT * FROM inet_tbl WHERE i <<= '192.168.1.0/24'::cidr ORDER BY i;
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SELECT * FROM inet_tbl WHERE i && '192.168.1.0/24'::cidr ORDER BY i;
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SELECT * FROM inet_tbl WHERE i >>= '192.168.1.0/24'::cidr ORDER BY i;
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SELECT * FROM inet_tbl WHERE i >> '192.168.1.0/24'::cidr ORDER BY i;
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SELECT * FROM inet_tbl WHERE i < '192.168.1.0/24'::cidr ORDER BY i;
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SELECT * FROM inet_tbl WHERE i <= '192.168.1.0/24'::cidr ORDER BY i;
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SELECT * FROM inet_tbl WHERE i = '192.168.1.0/24'::cidr ORDER BY i;
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SELECT * FROM inet_tbl WHERE i >= '192.168.1.0/24'::cidr ORDER BY i;
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SELECT * FROM inet_tbl WHERE i > '192.168.1.0/24'::cidr ORDER BY i;
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SELECT * FROM inet_tbl WHERE i <> '192.168.1.0/24'::cidr ORDER BY i;
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-- test index-only scans
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EXPLAIN (COSTS OFF)
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SELECT i FROM inet_tbl WHERE i << '192.168.1.0/24'::cidr ORDER BY i;
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SELECT i FROM inet_tbl WHERE i << '192.168.1.0/24'::cidr ORDER BY i;
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SET enable_seqscan TO on;
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DROP INDEX inet_idx3;
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-- simple tests of inet boolean and arithmetic operators
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SELECT i, ~i AS "~i" FROM inet_tbl;
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SELECT i, c, i & c AS "and" FROM inet_tbl;
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SELECT i, c, i | c AS "or" FROM inet_tbl;
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SELECT i, i + 500 AS "i+500" FROM inet_tbl;
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SELECT i, i - 500 AS "i-500" FROM inet_tbl;
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SELECT i, c, i - c AS "minus" FROM inet_tbl;
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SELECT '127.0.0.1'::inet + 257;
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SELECT ('127.0.0.1'::inet + 257) - 257;
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SELECT '127::1'::inet + 257;
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SELECT ('127::1'::inet + 257) - 257;
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SELECT '127.0.0.2'::inet - ('127.0.0.2'::inet + 500);
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SELECT '127.0.0.2'::inet - ('127.0.0.2'::inet - 500);
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SELECT '127::2'::inet - ('127::2'::inet + 500);
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SELECT '127::2'::inet - ('127::2'::inet - 500);
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-- these should give overflow errors:
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SELECT '127.0.0.1'::inet + 10000000000;
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SELECT '127.0.0.1'::inet - 10000000000;
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SELECT '126::1'::inet - '127::2'::inet;
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SELECT '127::1'::inet - '126::2'::inet;
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-- but not these
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SELECT '127::1'::inet + 10000000000;
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SELECT '127::1'::inet - '127::2'::inet;
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-- insert one more row with addressed from different families
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INSERT INTO INET_TBL (c, i) VALUES ('10', '10::/8');
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-- now, this one should fail
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SELECT inet_merge(c, i) FROM INET_TBL;
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-- fix it by inet_same_family() condition
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SELECT inet_merge(c, i) FROM INET_TBL WHERE inet_same_family(c, i);
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