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Commit4c8ab1b

Browse files
committed
Add btree and hash opclasses for pg_lsn.
This is needed to allow ORDER BY, DISTINCT, etc to work as expected forpg_lsn values.We had previously decided to put this off for 9.5, but in view of commiteeca4cd there's no reason to avoid acatversion bump for 9.4beta2, and this does make a pretty significantusability difference for pg_lsn.Michael Paquier, with fixes from Andres Freund and Tom Lane
1 parenteeca4cd commit4c8ab1b

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11 files changed

+196
-4
lines changed

11 files changed

+196
-4
lines changed

‎src/backend/utils/adt/pg_lsn.c‎

Lines changed: 26 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -1,9 +1,9 @@
11
/*-------------------------------------------------------------------------
22
*
33
* pg_lsn.c
4-
*Internal PostgreSQL LSN operations
4+
*Operations for the pg_lsn datatype.
55
*
6-
* Portions Copyright (c) 1996-2011, PostgreSQL Global Development Group
6+
* Portions Copyright (c) 1996-2014, PostgreSQL Global Development Group
77
* Portions Copyright (c) 1994, Regents of the University of California
88
*
99
* IDENTIFICATION
@@ -13,6 +13,7 @@
1313
*/
1414
#include"postgres.h"
1515

16+
#include"access/hash.h"
1617
#include"funcapi.h"
1718
#include"libpq/pqformat.h"
1819
#include"utils/builtins.h"
@@ -153,6 +154,29 @@ pg_lsn_ge(PG_FUNCTION_ARGS)
153154
PG_RETURN_BOOL(lsn1 >=lsn2);
154155
}
155156

157+
/* btree index opclass support */
158+
Datum
159+
pg_lsn_cmp(PG_FUNCTION_ARGS)
160+
{
161+
XLogRecPtra=PG_GETARG_LSN(0);
162+
XLogRecPtrb=PG_GETARG_LSN(1);
163+
164+
if (a>b)
165+
PG_RETURN_INT32(1);
166+
elseif (a==b)
167+
PG_RETURN_INT32(0);
168+
else
169+
PG_RETURN_INT32(-1);
170+
}
171+
172+
/* hash index opclass support */
173+
Datum
174+
pg_lsn_hash(PG_FUNCTION_ARGS)
175+
{
176+
/* We can use hashint8 directly */
177+
returnhashint8(fcinfo);
178+
}
179+
156180

157181
/*----------------------------------------------------------
158182
*Arithmetic operators on PostgreSQL LSNs.

‎src/include/catalog/catversion.h‎

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -53,6 +53,6 @@
5353
*/
5454

5555
/*yyyymmddN */
56-
#defineCATALOG_VERSION_NO201405111
56+
#defineCATALOG_VERSION_NO201406041
5757

5858
#endif

‎src/include/catalog/pg_amop.h‎

Lines changed: 12 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -512,6 +512,16 @@ DATA(insert (2968 2950 2950 3 s 2972403 0 ));
512512
DATA(insert (2968295029504s29774030 ));
513513
DATA(insert (2968295029505s29754030 ));
514514

515+
/*
516+
* btree pg_lsn_ops
517+
*/
518+
519+
DATA(insert (3253322032201s32244030 ));
520+
DATA(insert (3253322032202s32264030 ));
521+
DATA(insert (3253322032203s32224030 ));
522+
DATA(insert (3253322032204s32274030 ));
523+
DATA(insert (3253322032205s32254030 ));
524+
515525
/*
516526
*hash index _ops
517527
*/
@@ -581,6 +591,8 @@ DATA(insert (2231 1042 1042 1 s 1054 405 0 ));
581591
DATA(insert (2235103310331s9744050 ));
582592
/* uuid_ops */
583593
DATA(insert (2969295029501s29724050 ));
594+
/* pg_lsn_ops */
595+
DATA(insert (3254322032201s32224050 ));
584596
/* numeric_ops */
585597
DATA(insert (1998170017001s17524050 ));
586598
/* array_ops */

‎src/include/catalog/pg_amproc.h‎

Lines changed: 2 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -134,6 +134,7 @@ DATA(insert (2789 27 27 1 2794 ));
134134
DATA(insert (29682950295012960 ));
135135
DATA(insert (29942249224912987 ));
136136
DATA(insert (31942249224913187 ));
137+
DATA(insert (32533220322013251 ));
137138
DATA(insert (35223500350013514 ));
138139
DATA(insert (36263614361413622 ));
139140
DATA(insert (36833615361513668 ));
@@ -174,6 +175,7 @@ DATA(insert (2229 25 25 1 400 ));
174175
DATA(insert (22311042104211080 ));
175176
DATA(insert (2235103310331329 ));
176177
DATA(insert (29692950295012963 ));
178+
DATA(insert (32543220322013252 ));
177179
DATA(insert (35233500350013515 ));
178180
DATA(insert (39033831383113902 ));
179181
DATA(insert (40343802380214045 ));

‎src/include/catalog/pg_opclass.h‎

Lines changed: 2 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -215,6 +215,8 @@ DATA(insert (2742_reltime_opsPGNSP PGUID 2745 1024 t 703 ));
215215
DATA(insert (2742_tinterval_opsPGNSPPGUID27451025t704 ));
216216
DATA(insert (403uuid_opsPGNSPPGUID29682950t0 ));
217217
DATA(insert (405uuid_opsPGNSPPGUID29692950t0 ));
218+
DATA(insert (403pg_lsn_opsPGNSPPGUID32533220t0 ));
219+
DATA(insert (405pg_lsn_opsPGNSPPGUID32543220t0 ));
218220
DATA(insert (403enum_opsPGNSPPGUID35223500t0 ));
219221
DATA(insert (405enum_opsPGNSPPGUID35233500t0 ));
220222
DATA(insert (403tsvector_opsPGNSPPGUID36263614t0 ));

‎src/include/catalog/pg_operator.h‎

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -1595,7 +1595,7 @@ DATA(insert OID = 2977 ( ">=" PGNSP PGUID b f f 2950 2950 16 2976 2974 uuid_
15951595
DESCR("greater than or equal");
15961596

15971597
/* pg_lsn operators */
1598-
DATA(insertOID=3222 ("="PGNSPPGUIDbff322032201632223223pg_lsn_eqeqseleqjoinsel ));
1598+
DATA(insertOID=3222 ("="PGNSPPGUIDbtt322032201632223223pg_lsn_eqeqseleqjoinsel ));
15991599
DESCR("equal");
16001600
DATA(insertOID=3223 ("<>"PGNSPPGUIDbff322032201632233222pg_lsn_neneqselneqjoinsel ));
16011601
DESCR("not equal");

‎src/include/catalog/pg_opfamily.h‎

Lines changed: 2 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -134,6 +134,8 @@ DATA(insert OID = 1029 (783point_opsPGNSP PGUID ));
134134
DATA(insertOID=2745 (2742array_opsPGNSPPGUID ));
135135
DATA(insertOID=2968 (403uuid_opsPGNSPPGUID ));
136136
DATA(insertOID=2969 (405uuid_opsPGNSPPGUID ));
137+
DATA(insertOID=3253 (403pg_lsn_opsPGNSPPGUID ));
138+
DATA(insertOID=3254 (405pg_lsn_opsPGNSPPGUID ));
137139
DATA(insertOID=3522 (403enum_opsPGNSPPGUID ));
138140
DATA(insertOID=3523 (405enum_opsPGNSPPGUID ));
139141
DATA(insertOID=3626 (403tsvector_opsPGNSPPGUID ));

‎src/include/catalog/pg_proc.h‎

Lines changed: 4 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -4293,6 +4293,10 @@ DATA(insert OID = 3238 ( pg_lsn_recvPGNSP PGUID 12 1 0 0 0 f f f f t f i 1 0 3
42934293
DESCR("I/O");
42944294
DATA(insertOID=3239 (pg_lsn_sendPGNSPPGUID121000fffftfi1017"3220"_null__null__null__null_pg_lsn_send_null__null__null_ ));
42954295
DESCR("I/O");
4296+
DATA(insertOID=3251 (pg_lsn_cmpPGNSPPGUID121000fffftfi2023"3220 3220"_null__null__null__null_pg_lsn_cmp_null__null__null_ ));
4297+
DESCR("less-equal-greater");
4298+
DATA(insertOID=3252 (pg_lsn_hashPGNSPPGUID121000fffftfi1023"3220"_null__null__null__null_pg_lsn_hash_null__null__null_ ));
4299+
DESCR("hash");
42964300

42974301
/* enum related procs */
42984302
DATA(insertOID=3504 (anyenum_inPGNSPPGUID121000fffftfi103500"2275"_null__null__null__null_anyenum_in_null__null__null_ ));

‎src/include/utils/pg_lsn.h‎

Lines changed: 2 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -29,6 +29,8 @@ extern Datum pg_lsn_lt(PG_FUNCTION_ARGS);
2929
externDatumpg_lsn_gt(PG_FUNCTION_ARGS);
3030
externDatumpg_lsn_le(PG_FUNCTION_ARGS);
3131
externDatumpg_lsn_ge(PG_FUNCTION_ARGS);
32+
externDatumpg_lsn_cmp(PG_FUNCTION_ARGS);
33+
externDatumpg_lsn_hash(PG_FUNCTION_ARGS);
3234

3335
externDatumpg_lsn_mi(PG_FUNCTION_ARGS);
3436

‎src/test/regress/expected/pg_lsn.out‎

Lines changed: 130 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -64,3 +64,133 @@ SELECT '0/16AE7F8'::pg_lsn - '0/16AE7F7'::pg_lsn;
6464
1
6565
(1 row)
6666

67+
-- Check btree and hash opclasses
68+
EXPLAIN (COSTS OFF)
69+
SELECT DISTINCT (i || '/' || j)::pg_lsn f
70+
FROM generate_series(1, 10) i,
71+
generate_series(1, 10) j,
72+
generate_series(1, 5) k
73+
ORDER BY f;
74+
QUERY PLAN
75+
--------------------------------------------------------------------------
76+
Sort
77+
Sort Key: (((((i.i)::text || '/'::text) || (j.j)::text))::pg_lsn)
78+
-> HashAggregate
79+
Group Key: ((((i.i)::text || '/'::text) || (j.j)::text))::pg_lsn
80+
-> Nested Loop
81+
-> Function Scan on generate_series k
82+
-> Materialize
83+
-> Nested Loop
84+
-> Function Scan on generate_series i
85+
-> Function Scan on generate_series j
86+
(10 rows)
87+
88+
SELECT DISTINCT (i || '/' || j)::pg_lsn f
89+
FROM generate_series(1, 10) i,
90+
generate_series(1, 10) j,
91+
generate_series(1, 5) k
92+
ORDER BY f;
93+
f
94+
-------
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1/1
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1/2
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1/3
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1/4
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1/5
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1/6
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1/7
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1/8
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1/9
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1/10
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2/1
106+
2/2
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2/3
108+
2/4
109+
2/5
110+
2/6
111+
2/7
112+
2/8
113+
2/9
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2/10
115+
3/1
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3/2
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3/3
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3/4
119+
3/5
120+
3/6
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3/7
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3/8
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3/9
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3/10
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4/1
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4/2
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4/3
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4/4
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4/5
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4/6
131+
4/7
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4/8
133+
4/9
134+
4/10
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5/1
136+
5/2
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5/3
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5/4
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5/5
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5/6
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5/7
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5/8
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5/9
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5/10
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6/1
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6/2
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6/3
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6/4
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6/5
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6/7
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6/9
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6/10
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7/1
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7/2
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7/3
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7/4
159+
7/5
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7/6
161+
7/7
162+
7/8
163+
7/9
164+
7/10
165+
8/1
166+
8/2
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8/3
168+
8/4
169+
8/5
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8/6
171+
8/7
172+
8/8
173+
8/9
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8/10
175+
9/1
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9/2
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9/3
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9/4
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9/5
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9/6
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9/7
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9/8
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9/10
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10/4
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10/5
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10/6
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10/7
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10/8
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10/9
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10/10
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(100 rows)
196+

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