89 lines
2.7 KiB
Plaintext
89 lines
2.7 KiB
Plaintext
CREATE TABLE t1 (a int, b int, c int, d int, PRIMARY KEY(a,b,c))
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ENGINE = NDB
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PARTITION BY KEY (a,b);
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insert into t1 values (1,1,1,1);
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select * from t1;
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a b c d
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1 1 1 1
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update t1 set d = 2 where a = 1 and b = 1 and c = 1;
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select * from t1;
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a b c d
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1 1 1 2
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delete from t1;
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select * from t1;
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a b c d
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drop table t1;
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CREATE TABLE t1 (
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ol_o_id int NOT NULL,
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ol_d_id int NOT NULL,
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ol_w_id int NOT NULL,
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ol_number int NOT NULL,
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ol_tmp int,
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PRIMARY KEY (ol_w_id, ol_d_id, ol_o_id, ol_number)
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) ENGINE=NDB
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PARTITION BY HASH (ol_w_id);
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insert into t1 values (1,0,0,0,0),(1,0,0,1,0),(1,0,0,2,0),(1,1,0,0,0),(1,1,0,1,0);
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insert into t1 values (2,0,0,0,0),(4,0,0,0,0),(4,0,0,1,0);
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insert into t1 values (0,1,1,4,0),(0,1,1,5,0);
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SELECT * FROM t1 WHERE ol_w_id = 1 AND ol_d_id = 1 AND ol_o_id = 0;
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ol_o_id ol_d_id ol_w_id ol_number ol_tmp
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0 1 1 4 0
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0 1 1 5 0
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SELECT SUM(ol_number) FROM t1 WHERE ol_o_id = 0 AND ol_w_id = 1 AND ol_d_id = 1;
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SUM(ol_number)
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9
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drop table t1;
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CREATE TABLE t1 ( f_int1 INTEGER NOT NULL, f_int2 INTEGER NOT NULL,
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f_char1 CHAR(10),
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f_char2 CHAR(10), f_charbig VARCHAR(1000),
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PRIMARY KEY (f_int1,f_int2))
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ENGINE = NDB
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PARTITION BY LIST(MOD(f_int1 + f_int2,4))
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(PARTITION part_3 VALUES IN (-3),
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PARTITION part_2 VALUES IN (-2),
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PARTITION part_1 VALUES IN (-1),
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PARTITION part0 VALUES IN (0),
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PARTITION part1 VALUES IN (1),
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PARTITION part2 VALUES IN (2),
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PARTITION part3 VALUES IN (3,4,5));
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INSERT INTO t1 SET f_int1 = -2, f_int2 = 20, f_char1 = '20', f_char2 = '20', f_charbig = '===20===';
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INSERT INTO t1 SET f_int1 = 1, f_int2 = 1, f_char1 = '1', f_char2 = '1', f_charbig = '===1===';
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INSERT INTO t1 SET f_int1 = 2, f_int2 = 1, f_char1 = '1', f_char2 = '1', f_charbig = '===1===';
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INSERT INTO t1 SET f_int1 = 3, f_int2 = 1, f_char1 = '1', f_char2 = '1', f_charbig = '===1===';
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INSERT INTO t1 SET f_int1 = 4, f_int2 = 1, f_char1 = '1', f_char2 = '1', f_charbig = '===1===';
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INSERT INTO t1 SET f_int1 = 5, f_int2 = 1, f_char1 = '1', f_char2 = '1', f_charbig = '===1===';
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INSERT INTO t1 SET f_int1 = 20, f_int2 = 1, f_char1 = '1', f_char2 = '1', f_charbig = '===1===';
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SELECT * FROM t1 ORDER BY f_int1;
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f_int1 f_int2 f_char1 f_char2 f_charbig
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-2 20 20 20 ===20===
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1 1 1 1 ===1===
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2 1 1 1 ===1===
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3 1 1 1 ===1===
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4 1 1 1 ===1===
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5 1 1 1 ===1===
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20 1 1 1 ===1===
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DROP TABLE t1;
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CREATE TABLE t1 (
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a int not null,
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b int not null,
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c int not null,
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primary key(a,b),
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index (a))
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engine = ndb
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partition by range (a)
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partitions 3
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(partition x1 values less than (5),
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partition x2 values less than (10),
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partition x3 values less than (20));
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INSERT into t1 values (1, 1, 1);
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INSERT into t1 values (6, 1, 1);
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INSERT into t1 values (10, 1, 1);
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INSERT into t1 values (15, 1, 1);
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select * from t1 order by a;
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a b c
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1 1 1
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6 1 1
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10 1 1
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15 1 1
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drop table t1;
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