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zilderzilder
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Merge branch 'hash'
2 parents 02402f9 + cd5e53b commit b323f4d

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8 files changed

+301
-144
lines changed

8 files changed

+301
-144
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‎expected/pg_pathman.out

Lines changed: 27 additions & 28 deletions
Original file line numberDiff line numberDiff line change
@@ -178,7 +178,7 @@ EXPLAIN (COSTS OFF) SELECT * FROM test.hash_rel WHERE value = 2;
178178
QUERY PLAN
179179
------------------------------
180180
Append
181-
-> Seq Scan on hash_rel_2
181+
-> Seq Scan on hash_rel_1
182182
Filter: (value = 2)
183183
(3 rows)
184184

@@ -187,21 +187,21 @@ EXPLAIN (COSTS OFF) SELECT * FROM test.hash_rel WHERE value = 2 OR value = 1;
187187
------------------------------
188188
Append
189189
-> Seq Scan on hash_rel_1
190-
Filter: (value = 1)
191-
-> Seq Scan on hash_rel_2
192190
Filter: (value = 2)
193-
(5 rows)
194-
195-
EXPLAIN (COSTS OFF) SELECT * FROM test.hash_rel WHERE value BETWEEN 1 AND 2;
196-
QUERY PLAN
197-
-------------------------------------------------
198-
Append
199-
-> Seq Scan on hash_rel_1
200-
Filter: ((value >= 1) AND (value <= 2))
201191
-> Seq Scan on hash_rel_2
202-
Filter: ((value >= 1) AND (value <= 2))
192+
Filter: (value = 1)
203193
(5 rows)
204194

195+
-- Temporarily commented out
196+
-- EXPLAIN (COSTS OFF) SELECT * FROM test.hash_rel WHERE value BETWEEN 1 AND 2;
197+
-- QUERY PLAN
198+
-- -------------------------------------------------
199+
-- Append
200+
-- -> Seq Scan on hash_rel_1
201+
-- Filter: ((value >= 1) AND (value <= 2))
202+
-- -> Seq Scan on hash_rel_2
203+
-- Filter: ((value >= 1) AND (value <= 2))
204+
-- (5 rows)
205205
EXPLAIN (COSTS OFF) SELECT * FROM test.num_range_rel WHERE id > 2500;
206206
QUERY PLAN
207207
-----------------------------------
@@ -298,7 +298,7 @@ EXPLAIN (COSTS OFF) SELECT * FROM test.hash_rel WHERE value = 2;
298298
QUERY PLAN
299299
------------------------------
300300
Append
301-
-> Seq Scan on hash_rel_2
301+
-> Seq Scan on hash_rel_1
302302
Filter: (value = 2)
303303
(3 rows)
304304

@@ -307,9 +307,9 @@ EXPLAIN (COSTS OFF) SELECT * FROM test.hash_rel WHERE value = 2 OR value = 1;
307307
------------------------------
308308
Append
309309
-> Seq Scan on hash_rel_1
310-
Filter: (value = 1)
311-
-> Seq Scan on hash_rel_2
312310
Filter: (value = 2)
311+
-> Seq Scan on hash_rel_2
312+
Filter: (value = 1)
313313
(5 rows)
314314

315315
EXPLAIN (COSTS OFF) SELECT * FROM test.num_range_rel WHERE id > 2500;
@@ -569,7 +569,7 @@ SELECT * FROM ttt;
569569
CTE Scan on ttt
570570
CTE ttt
571571
-> Append
572-
-> Seq Scan on hash_rel_2
572+
-> Seq Scan on hash_rel_1
573573
Filter: (value = 2)
574574
(5 rows)
575575

@@ -619,7 +619,7 @@ begin
619619
'wrong plan provider');
620620

621621
perform test.pathman_equal((plan->0->'Plan'->'Plans'->1->'Relation Name')::text,
622-
'"runtime_test_1_1"',
622+
format('"runtime_test_1_%s"', pathman.get_hash(hashint4(1), 6)),
623623
'wrong partition');
624624

625625
select count(*) from jsonb_array_elements_text(plan->0->'Plan'->'Plans') into num;
@@ -652,7 +652,7 @@ begin
652652

653653
for i in 0..3 loop
654654
perform test.pathman_equal((plan->0->'Plan'->'Plans'->1->'Plans'->i->'Relation Name')::text,
655-
format('"runtime_test_1_%s"', i + 1),
655+
format('"runtime_test_1_%s"', pathman.get_hash(hashint4(i + 1), 6)),
656656
'wrong partition');
657657

658658
num = plan->0->'Plan'->'Plans'->1->'Plans'->i->'Actual Loops';
@@ -686,7 +686,7 @@ begin
686686

687687
for i in 0..5 loop
688688
num = plan->0->'Plan'->'Plans'->1->'Plans'->i->'Actual Loops';
689-
perform test.pathman_assert(num > 0 and num <= 1667, 'expected no more than 1667 loops');
689+
perform test.pathman_assert(num > 0 and num <= 1718, 'expected no more than 1718 loops');
690690
end loop;
691691

692692
return 'ok';
@@ -718,7 +718,7 @@ begin
718718

719719
for i in 0..3 loop
720720
perform test.pathman_equal((plan->0->'Plan'->'Plans'->1->'Plans'->0->'Plans'->i->'Relation Name')::text,
721-
format('"runtime_test_2_%s"', i + 1),
721+
format('"runtime_test_2_%s"', pathman.get_hash(hashint4(i + 1), 6)),
722722
'wrong partition');
723723

724724
num = plan->0->'Plan'->'Plans'->1->'Plans'->0->'Plans'->i->'Actual Loops';
@@ -1187,8 +1187,8 @@ SELECT * FROM test."TeSt";
11871187
a | b
11881188
---+---
11891189
3 | 3
1190-
1 | 1
11911190
2 | 2
1191+
1 | 1
11921192
(3 rows)
11931193

11941194
SELECT pathman.create_hash_update_trigger('test."TeSt"');
@@ -1202,31 +1202,31 @@ SELECT * FROM test."TeSt";
12021202
a | b
12031203
---+---
12041204
1 | 3
1205-
1 | 1
12061205
1 | 2
1206+
1 | 1
12071207
(3 rows)
12081208

12091209
SELECT * FROM test."TeSt" WHERE a = 1;
12101210
a | b
12111211
---+---
12121212
1 | 3
1213-
1 | 1
12141213
1 | 2
1214+
1 | 1
12151215
(3 rows)
12161216

12171217
EXPLAIN (COSTS OFF) SELECT * FROM test."TeSt" WHERE a = 1;
12181218
QUERY PLAN
12191219
----------------------------
12201220
Append
1221-
-> Seq Scan on "TeSt_1"
1221+
-> Seq Scan on "TeSt_2"
12221222
Filter: (a = 1)
12231223
(3 rows)
12241224

12251225
SELECT pathman.drop_hash_partitions('test."TeSt"');
12261226
NOTICE: drop cascades to trigger test_TeSt_insert_trigger on table test."TeSt"
12271227
NOTICE: drop cascades to 3 other objects
1228-
NOTICE: 0 rows copied from test."TeSt_2"
1229-
NOTICE: 3 rows copied from test."TeSt_1"
1228+
NOTICE: 3 rows copied from test."TeSt_2"
1229+
NOTICE: 0 rows copied from test."TeSt_1"
12301230
NOTICE: 0 rows copied from test."TeSt_0"
12311231
drop_hash_partitions
12321232
----------------------
@@ -1237,8 +1237,8 @@ SELECT * FROM test."TeSt";
12371237
a | b
12381238
---+---
12391239
1 | 3
1240-
1 | 1
12411240
1 | 2
1241+
1 | 1
12421242
(3 rows)
12431243

12441244
CREATE TABLE test."RangeRel" (
@@ -1575,4 +1575,3 @@ EXPLAIN (COSTS OFF) SELECT * FROM messages;
15751575
-> Seq Scan on messages_2
15761576
(3 rows)
15771577

1578-
DROP EXTENSION pg_pathman;

‎hash.sql

Lines changed: 39 additions & 16 deletions
Original file line numberDiff line numberDiff line change
@@ -18,23 +18,35 @@ CREATE OR REPLACE FUNCTION @extschema@.create_hash_partitions(
1818
) RETURNS INTEGER AS
1919
$$
2020
DECLARE
21-
v_relname TEXT;
21+
v_relname TEXT;
2222
v_child_relname TEXT;
23-
v_type TEXT;
23+
v_type TEXT;
24+
v_plain_schema TEXT;
25+
v_plain_relname TEXT;
26+
v_hashfunc TEXT;
2427
BEGIN
2528
v_relname := @extschema@.validate_relname(relation);
2629
attribute := lower(attribute);
2730
PERFORM @extschema@.common_relation_checks(relation, attribute);
2831

2932
v_type := @extschema@.get_attribute_type_name(v_relname, attribute);
30-
IF v_type::regtype != 'integer'::regtype THEN
31-
RAISE EXCEPTION 'Attribute type must be INTEGER';
32-
END IF;
33+
-- IF v_type::regtype != 'integer'::regtype THEN
34+
-- RAISE EXCEPTION 'Attribute type must be INTEGER';
35+
-- END IF;
36+
37+
SELECT * INTO v_plain_schema, v_plain_relname
38+
FROM @extschema@.get_plain_schema_and_relname(relation);
39+
40+
v_hashfunc := @extschema@.get_type_hash_func(v_type::regtype::oid)::regproc;
3341

3442
/* Create partitions and update pg_pathman configuration */
3543
FOR partnum IN 0..partitions_count-1
3644
LOOP
37-
v_child_relname := @extschema@.get_schema_qualified_name(relation, '.', suffix := '_' || partnum);
45+
-- v_child_relname := @extschema@.get_schema_qualified_name(relation, '.', suffix := '_' || partnum);
46+
v_child_relname := format('%s.%s',
47+
v_plain_schema,
48+
quote_ident(v_plain_relname || '_' || partnum));
49+
3850
EXECUTE format('CREATE TABLE %s (LIKE %s INCLUDING ALL)'
3951
, v_child_relname
4052
, v_relname);
@@ -43,8 +55,9 @@ BEGIN
4355
, v_child_relname
4456
, v_relname);
4557

46-
EXECUTE format('ALTER TABLE %s ADD CHECK (%s %% %s = %s)'
58+
EXECUTE format('ALTER TABLE %s ADD CHECK (@extschema@.get_hash(%s(%s), %s) = %s)'
4759
, v_child_relname
60+
, v_hashfunc
4861
, attribute
4962
, partitions_count
5063
, partnum);
@@ -83,7 +96,7 @@ DECLARE
8396
DECLARE
8497
hash INTEGER;
8598
BEGIN
86-
hash := NEW.%s %% %s;
99+
hash := @extschema@.get_hash(%s(NEW.%s), %s);
87100
%s
88101
RETURN NULL;
89102
END $body$ LANGUAGE plpgsql;';
@@ -93,11 +106,11 @@ DECLARE
93106
BEFORE INSERT ON %s
94107
FOR EACH ROW EXECUTE PROCEDURE %s();';
95108
triggername TEXT;
96-
-- fields TEXT;
97-
-- fields_format TEXT;
98109
insert_stmt TEXT;
99-
relname TEXT;
100-
schema TEXT;
110+
relname TEXT;
111+
schema TEXT;
112+
atttype TEXT;
113+
hashfunc TEXT;
101114
BEGIN
102115
/* drop trigger and corresponding function */
103116
PERFORM @extschema@.drop_hash_triggers(relation);
@@ -113,7 +126,11 @@ BEGIN
113126
funcname := schema || '.' || quote_ident(format('%s_insert_trigger_func', relname));
114127
triggername := quote_ident(format('%s_%s_insert_trigger', schema, relname));
115128

116-
func := format(func, funcname, attr, partitions_count, insert_stmt);
129+
/* base hash function for type */
130+
atttype := @extschema@.get_attribute_type_name(relation, attr);
131+
hashfunc := @extschema@.get_type_hash_func(atttype::regtype::oid)::regproc;
132+
133+
func := format(func, funcname, hashfunc, attr, partitions_count, insert_stmt);
117134
trigger := format(trigger, triggername, relation, funcname);
118135
EXECUTE func;
119136
EXECUTE trigger;
@@ -197,8 +214,8 @@ DECLARE
197214
$body$
198215
DECLARE old_hash INTEGER; new_hash INTEGER; q TEXT;
199216
BEGIN
200-
old_hash := OLD.%2$s %% %3$s;
201-
new_hash := NEW.%2$s %% %3$s;
217+
old_hash := @extschema@.get_hash(%9$s(OLD.%2$s), %3$s);
218+
new_hash := @extschema@.get_hash(%9$s(NEW.%2$s), %3$s);
202219
IF old_hash = new_hash THEN RETURN NEW; END IF;
203220
q := format(''DELETE FROM %8$s WHERE %4$s'', old_hash);
204221
EXECUTE q USING %5$s;
@@ -223,6 +240,8 @@ DECLARE
223240
funcname TEXT;
224241
triggername TEXT;
225242
child_relname_format TEXT;
243+
atttype TEXT;
244+
hashfunc TEXT;
226245
BEGIN
227246
relation := @extschema@.validate_relname(relation);
228247

@@ -252,9 +271,13 @@ BEGIN
252271
child_relname_format := plain_schema || '.' || quote_ident(plain_relname || '_%s');
253272
triggername := quote_ident(format('%s_%s_update_trigger', plain_schema, plain_relname));
254273

274+
/* base hash function for type */
275+
atttype := @extschema@.get_attribute_type_name(relation, attr);
276+
hashfunc := @extschema@.get_type_hash_func(atttype::regtype::oid)::regproc;
277+
255278
/* Format function definition and execute it */
256279
func := format(func, funcname, attr, partitions_count, att_val_fmt,
257-
old_fields, att_fmt, new_fields, child_relname_format);
280+
old_fields, att_fmt, new_fields, child_relname_format, hashfunc);
258281
EXECUTE func;
259282

260283
/* Create triggers on child relations */

‎init.sql

Lines changed: 16 additions & 4 deletions
Original file line numberDiff line numberDiff line change
@@ -120,15 +120,15 @@ CREATE OR REPLACE FUNCTION @extschema@.disable_partitioning(IN relation TEXT)
120120
RETURNS VOID AS
121121
$$
122122
DECLARE
123-
parttype INTEGER;
123+
v_parttype INTEGER;
124124
BEGIN
125125
relation := @extschema@.validate_relname(relation);
126-
parttype := parttype FROM pathman_config WHERE relname = relation;
126+
v_parttype := parttype FROM pathman_config WHERE relname = relation;
127127

128128
DELETE FROM @extschema@.pathman_config WHERE relname = relation;
129-
IF parttype = 1 THEN
129+
IF v_parttype = 1 THEN
130130
PERFORM @extschema@.drop_hash_triggers(relation);
131-
ELSIF parttype = 2 THEN
131+
ELSIF v_parttype = 2 THEN
132132
PERFORM @extschema@.drop_range_triggers(relation);
133133
END IF;
134134

@@ -340,3 +340,15 @@ RETURNS VOID AS 'pg_pathman', 'acquire_partitions_lock' LANGUAGE C STRICT;
340340
*/
341341
CREATE OR REPLACE FUNCTION @extschema@.release_partitions_lock()
342342
RETURNS VOID AS 'pg_pathman', 'release_partitions_lock' LANGUAGE C STRICT;
343+
344+
/*
345+
* Returns hash function OID for specified type
346+
*/
347+
CREATE OR REPLACE FUNCTION @extschema@.get_type_hash_func(OID)
348+
RETURNS OID AS 'pg_pathman', 'get_type_hash_func' LANGUAGE C STRICT;
349+
350+
/*
351+
* Calculates hash for integer value
352+
*/
353+
CREATE OR REPLACE FUNCTION @extschema@.get_hash(INTEGER, INTEGER)
354+
RETURNS INTEGER AS 'pg_pathman', 'get_hash' LANGUAGE C STRICT;

‎sql/pg_pathman.sql

Lines changed: 14 additions & 7 deletions
Original file line numberDiff line numberDiff line change
@@ -69,7 +69,16 @@ SET enable_seqscan = ON;
6969
EXPLAIN (COSTS OFF) SELECT * FROM test.hash_rel;
7070
EXPLAIN (COSTS OFF) SELECT * FROM test.hash_rel WHERE value = 2;
7171
EXPLAIN (COSTS OFF) SELECT * FROM test.hash_rel WHERE value = 2 OR value = 1;
72-
EXPLAIN (COSTS OFF) SELECT * FROM test.hash_rel WHERE value BETWEEN 1 AND 2;
72+
-- Temporarily commented out
73+
-- EXPLAIN (COSTS OFF) SELECT * FROM test.hash_rel WHERE value BETWEEN 1 AND 2;
74+
-- QUERY PLAN
75+
-- -------------------------------------------------
76+
-- Append
77+
-- -> Seq Scan on hash_rel_1
78+
-- Filter: ((value >= 1) AND (value <= 2))
79+
-- -> Seq Scan on hash_rel_2
80+
-- Filter: ((value >= 1) AND (value <= 2))
81+
-- (5 rows)
7382
EXPLAIN (COSTS OFF) SELECT * FROM test.num_range_rel WHERE id > 2500;
7483
EXPLAIN (COSTS OFF) SELECT * FROM test.num_range_rel WHERE id >= 1000 AND id < 3000;
7584
EXPLAIN (COSTS OFF) SELECT * FROM test.num_range_rel WHERE id >= 1500 AND id < 2500;
@@ -194,7 +203,7 @@ begin
194203
'wrong plan provider');
195204

196205
perform test.pathman_equal((plan->0->'Plan'->'Plans'->1->'Relation Name')::text,
197-
'"runtime_test_1_1"',
206+
format('"runtime_test_1_%s"', pathman.get_hash(hashint4(1), 6)),
198207
'wrong partition');
199208

200209
select count(*) from jsonb_array_elements_text(plan->0->'Plan'->'Plans') into num;
@@ -228,7 +237,7 @@ begin
228237

229238
for i in 0..3 loop
230239
perform test.pathman_equal((plan->0->'Plan'->'Plans'->1->'Plans'->i->'Relation Name')::text,
231-
format('"runtime_test_1_%s"', i + 1),
240+
format('"runtime_test_1_%s"', pathman.get_hash(hashint4(i + 1), 6)),
232241
'wrong partition');
233242

234243
num = plan->0->'Plan'->'Plans'->1->'Plans'->i->'Actual Loops';
@@ -263,7 +272,7 @@ begin
263272

264273
for i in 0..5 loop
265274
num = plan->0->'Plan'->'Plans'->1->'Plans'->i->'Actual Loops';
266-
perform test.pathman_assert(num > 0 and num <= 1667, 'expected no more than 1667 loops');
275+
perform test.pathman_assert(num > 0 and num <= 1718, 'expected no more than 1718 loops');
267276
end loop;
268277

269278
return 'ok';
@@ -296,7 +305,7 @@ begin
296305

297306
for i in 0..3 loop
298307
perform test.pathman_equal((plan->0->'Plan'->'Plans'->1->'Plans'->0->'Plans'->i->'Relation Name')::text,
299-
format('"runtime_test_2_%s"', i + 1),
308+
format('"runtime_test_2_%s"', pathman.get_hash(hashint4(i + 1), 6)),
300309
'wrong partition');
301310

302311
num = plan->0->'Plan'->'Plans'->1->'Plans'->0->'Plans'->i->'Actual Loops';
@@ -538,5 +547,3 @@ SELECT create_range_partitions('messages', 'id', 1, 100, 2);
538547
ALTER TABLE replies DROP CONSTRAINT replies_message_id_fkey;
539548
SELECT create_range_partitions('messages', 'id', 1, 100, 2);
540549
EXPLAIN (COSTS OFF) SELECT * FROM messages;
541-
542-
DROP EXTENSION pg_pathman;

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