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
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
|
drop table if exists t1;
create table t1 (a int unsigned)
partition by list (a)
(partition p0 values in (0),
partition p1 values in (1),
partition pnull values in (null),
partition p2 values in (2));
insert into t1 values (null),(0),(1),(2);
select * from t1 where a < 2;
a
0
1
select * from t1 where a <= 0;
a
0
select * from t1 where a < 1;
a
0
select * from t1 where a > 0;
a
1
2
select * from t1 where a > 1;
a
2
select * from t1 where a >= 0;
a
0
1
2
select * from t1 where a >= 1;
a
1
2
select * from t1 where a is null;
a
NULL
select * from t1 where a is not null;
a
0
1
2
select * from t1 where a is null or a > 0;
a
1
NULL
2
drop table t1;
create table t1 (a int unsigned, b int)
partition by list (a)
subpartition by hash (b)
subpartitions 2
(partition p0 values in (0),
partition p1 values in (1),
partition pnull values in (null, 2),
partition p3 values in (3));
insert into t1 values (0,0),(0,1),(1,0),(1,1),(null,0),(null,1);
insert into t1 values (2,0),(2,1),(3,0),(3,1);
explain partitions select * from t1 where a is null;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 pnull_pnullsp0,pnull_pnullsp1 ALL NULL NULL NULL NULL 4 Using where
select * from t1 where a is null;
a b
NULL 0
NULL 1
explain partitions select * from t1 where a = 2;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 pnull_pnullsp0,pnull_pnullsp1 ALL NULL NULL NULL NULL 4 Using where
select * from t1 where a = 2;
a b
2 0
2 1
select * from t1 where a <= 0;
a b
0 0
0 1
select * from t1 where a < 3;
a b
0 0
0 1
1 0
1 1
2 0
2 1
select * from t1 where a >= 1 or a is null;
a b
1 0
1 1
NULL 0
2 0
NULL 1
2 1
3 0
3 1
drop table t1;
CREATE TABLE t1 (
a int not null,
b int not null,
c int not null)
partition by list(a)
partitions 2
(partition x123 values in (1,5,6),
partition x234 values in (4,7,8));
INSERT into t1 VALUES (1,1,1);
INSERT into t1 VALUES (2,1,1);
ERROR HY000: Table has no partition for value 2
INSERT into t1 VALUES (3,1,1);
ERROR HY000: Table has no partition for value 3
INSERT into t1 VALUES (4,1,1);
INSERT into t1 VALUES (5,1,1);
INSERT into t1 VALUES (6,1,1);
INSERT into t1 VALUES (7,1,1);
INSERT into t1 VALUES (8,1,1);
INSERT into t1 VALUES (9,1,1);
ERROR HY000: Table has no partition for value 9
INSERT into t1 VALUES (1,2,1);
INSERT into t1 VALUES (1,3,1);
INSERT into t1 VALUES (1,4,1);
INSERT into t1 VALUES (7,2,1);
INSERT into t1 VALUES (7,3,1);
INSERT into t1 VALUES (7,4,1);
SELECT * from t1;
a b c
1 1 1
5 1 1
6 1 1
1 2 1
1 3 1
1 4 1
4 1 1
7 1 1
8 1 1
7 2 1
7 3 1
7 4 1
SELECT * from t1 WHERE a=1;
a b c
1 1 1
1 2 1
1 3 1
1 4 1
SELECT * from t1 WHERE a=7;
a b c
7 1 1
7 2 1
7 3 1
7 4 1
SELECT * from t1 WHERE b=2;
a b c
1 2 1
7 2 1
UPDATE t1 SET a=8 WHERE a=7 AND b=3;
SELECT * from t1;
a b c
1 1 1
5 1 1
6 1 1
1 2 1
1 3 1
1 4 1
4 1 1
7 1 1
8 1 1
7 2 1
8 3 1
7 4 1
UPDATE t1 SET a=8 WHERE a=5 AND b=1;
SELECT * from t1;
a b c
1 1 1
6 1 1
1 2 1
1 3 1
1 4 1
4 1 1
7 1 1
8 1 1
7 2 1
8 3 1
7 4 1
8 1 1
DELETE from t1 WHERE a=8;
SELECT * from t1;
a b c
1 1 1
6 1 1
1 2 1
1 3 1
1 4 1
4 1 1
7 1 1
7 2 1
7 4 1
DELETE from t1 WHERE a=2;
SELECT * from t1;
a b c
1 1 1
6 1 1
1 2 1
1 3 1
1 4 1
4 1 1
7 1 1
7 2 1
7 4 1
DELETE from t1 WHERE a=5 OR a=6;
SELECT * from t1;
a b c
1 1 1
1 2 1
1 3 1
1 4 1
4 1 1
7 1 1
7 2 1
7 4 1
ALTER TABLE t1
partition by list(a)
partitions 2
(partition x123 values in (1,5,6),
partition x234 values in (4,7,8));
SELECT * from t1;
a b c
1 1 1
1 2 1
1 3 1
1 4 1
4 1 1
7 1 1
7 2 1
7 4 1
INSERT into t1 VALUES (6,2,1);
INSERT into t1 VALUES (2,2,1);
ERROR HY000: Table has no partition for value 2
drop table t1;
CREATE TABLE t1 (
a int not null,
b int not null,
c int not null,
primary key (a,b))
partition by list (a)
subpartition by hash (a+b)
( partition x1 values in (1,2,3)
( subpartition x11 nodegroup 0,
subpartition x12 nodegroup 1),
partition x2 values in (4,5,6)
( subpartition x21 nodegroup 0,
subpartition x22 nodegroup 1)
);
INSERT into t1 VALUES (1,1,1);
INSERT into t1 VALUES (4,1,1);
INSERT into t1 VALUES (7,1,1);
ERROR HY000: Table has no partition for value 7
UPDATE t1 SET a=5 WHERE a=1;
SELECT * from t1;
a b c
5 1 1
4 1 1
UPDATE t1 SET a=6 WHERE a=4;
SELECT * from t1;
a b c
5 1 1
6 1 1
DELETE from t1 WHERE a=6;
SELECT * from t1;
a b c
5 1 1
drop table t1;
CREATE TABLE t1 (
a int not null,
b int not null,
c int not null,
primary key(a,b))
partition by list (a)
(partition x1 values in (1,2,9,4) tablespace ts1);
drop table t1;
CREATE TABLE t1 (s1 int) PARTITION BY LIST (s1)
(PARTITION p1 VALUES IN (1),
PARTITION p2 VALUES IN (2),
PARTITION p3 VALUES IN (3),
PARTITION p4 VALUES IN (4),
PARTITION p5 VALUES IN (5));
INSERT INTO t1 VALUES (1), (2), (3), (4), (5);
SELECT COUNT(*) FROM t1 WHERE s1 < 3;
COUNT(*)
2
DROP TABLE t1;
create table t1 (a int auto_increment primary key)
auto_increment=100
partition by list (a)
(partition p0 values in (1, 100));
create index inx on t1 (a);
insert into t1 values (null);
select * from t1;
a
100
drop table t1;
create table t1 (a char(1))
partition by list (ascii(ucase(a)))
(partition p1 values in (2));
ERROR HY000: This partition function is not allowed
|
