mirror of
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550 lines
13 KiB
Text
550 lines
13 KiB
Text
CREATE SEQUENCE t1 start with 1 minvalue 1 maxvalue 10 increment by 1 cache 2 cycle;
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show create table t1;
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Table Create Table
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t1 CREATE TABLE `t1` (
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`next_not_cached_value` bigint(21) NOT NULL,
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`minimum_value` bigint(21) NOT NULL,
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`maximum_value` bigint(21) NOT NULL,
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`start_value` bigint(21) NOT NULL COMMENT 'start value when sequences is created or value if RESTART is used',
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`increment` bigint(21) NOT NULL COMMENT 'increment value',
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`cache_size` bigint(21) unsigned NOT NULL,
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`cycle_option` tinyint(1) unsigned NOT NULL COMMENT '0 if no cycles are allowed, 1 if the sequence should begin a new cycle when maximum_value is passed',
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`cycle_count` bigint(21) NOT NULL COMMENT 'How many cycles have been done'
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) ENGINE=MyISAM SEQUENCE=1
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select next value for t1;
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next value for t1
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1
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select next_not_cached_value,cycle_count from t1;
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next_not_cached_value cycle_count
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3 0
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select next value for t1;
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next value for t1
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2
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select next_not_cached_value,cycle_count from t1;
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next_not_cached_value cycle_count
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3 0
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select next value for t1;
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next value for t1
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3
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select next_not_cached_value,cycle_count from t1;
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next_not_cached_value cycle_count
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5 0
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select next value for t1;
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next value for t1
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4
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select next_not_cached_value,cycle_count from t1;
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next_not_cached_value cycle_count
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5 0
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select next value for t1;
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next value for t1
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5
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select next_not_cached_value,cycle_count from t1;
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next_not_cached_value cycle_count
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7 0
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select next value for t1;
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next value for t1
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6
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select next_not_cached_value,cycle_count from t1;
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next_not_cached_value cycle_count
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7 0
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select next value for t1;
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next value for t1
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7
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select next_not_cached_value,cycle_count from t1;
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next_not_cached_value cycle_count
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9 0
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select next value for t1;
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next value for t1
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8
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select next_not_cached_value,cycle_count from t1;
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next_not_cached_value cycle_count
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9 0
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select next value for t1;
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next value for t1
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9
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select next_not_cached_value,cycle_count from t1;
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next_not_cached_value cycle_count
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11 0
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select next value for t1;
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next value for t1
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10
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select next_not_cached_value,cycle_count from t1;
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next_not_cached_value cycle_count
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11 0
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select next value for t1;
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next value for t1
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1
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select next_not_cached_value,cycle_count from t1;
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next_not_cached_value cycle_count
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3 1
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select NEXT VALUE for t1,seq from seq_1_to_20;
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NEXT VALUE for t1 seq
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2 1
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3 2
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4 3
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5 4
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6 5
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7 6
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8 7
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9 8
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10 9
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1 10
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2 11
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3 12
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4 13
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5 14
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6 15
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7 16
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8 17
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9 18
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10 19
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1 20
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drop sequence t1;
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CREATE SEQUENCE t1 minvalue 1 maxvalue 10 increment by -1 cache 2 cycle engine=aria;
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select next value for t1;
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next value for t1
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10
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select next_not_cached_value,cycle_count from t1;
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next_not_cached_value cycle_count
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8 0
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select next value for t1;
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next value for t1
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9
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select next_not_cached_value,cycle_count from t1;
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next_not_cached_value cycle_count
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8 0
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select next value for t1;
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next value for t1
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8
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select next_not_cached_value,cycle_count from t1;
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next_not_cached_value cycle_count
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6 0
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select next value for t1;
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next value for t1
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7
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select next_not_cached_value,cycle_count from t1;
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next_not_cached_value cycle_count
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6 0
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select next value for t1;
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next value for t1
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6
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select next_not_cached_value,cycle_count from t1;
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next_not_cached_value cycle_count
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4 0
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select next value for t1;
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next value for t1
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5
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select next_not_cached_value,cycle_count from t1;
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next_not_cached_value cycle_count
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4 0
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select next value for t1;
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next value for t1
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4
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select next_not_cached_value,cycle_count from t1;
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next_not_cached_value cycle_count
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2 0
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select next value for t1;
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next value for t1
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3
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select next_not_cached_value,cycle_count from t1;
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next_not_cached_value cycle_count
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2 0
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select next value for t1;
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next value for t1
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2
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select next_not_cached_value,cycle_count from t1;
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next_not_cached_value cycle_count
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0 0
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select next value for t1;
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next value for t1
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1
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select next_not_cached_value,cycle_count from t1;
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next_not_cached_value cycle_count
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0 0
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select next value for t1;
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next value for t1
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10
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select next_not_cached_value,cycle_count from t1;
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next_not_cached_value cycle_count
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8 1
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select NEXT VALUE for t1,seq from seq_1_to_20;
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NEXT VALUE for t1 seq
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9 1
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8 2
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7 3
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6 4
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5 5
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4 6
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3 7
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2 8
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1 9
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10 10
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9 11
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8 12
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7 13
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6 14
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5 15
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4 16
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3 17
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2 18
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1 19
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10 20
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drop sequence t1;
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CREATE SEQUENCE t1 start with 8 minvalue 1 maxvalue 10 increment by 1 cache 2 nocycle;
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select next value for t1;
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next value for t1
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8
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select next value for t1;
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next value for t1
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9
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select next value for t1;
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next value for t1
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10
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select previous value for t1;
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previous value for t1
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10
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select next value for t1;
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ERROR HY000: Sequence 'test.t1' has run out
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select previous value for t1;
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previous value for t1
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NULL
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select next value for t1;
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ERROR HY000: Sequence 'test.t1' has run out
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drop sequence t1;
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create sequence s1 start with 1 cache 2 maxvalue 5;
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select next value for s1;
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next value for s1
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1
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select next value for s1;
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next value for s1
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2
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select next value for s1;
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next value for s1
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3
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select next value for s1;
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next value for s1
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4
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select next value for s1;
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next value for s1
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5
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select next value for s1;
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ERROR HY000: Sequence 'test.s1' has run out
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drop sequence s1;
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CREATE SEQUENCE t1 start with 1 minvalue 1 maxvalue 100 increment by 1 cache 10;
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select next value for t1;
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next value for t1
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1
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select * from t1;
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next_not_cached_value minimum_value maximum_value start_value increment cache_size cycle_option cycle_count
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11 1 100 1 1 10 0 0
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flush tables;
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select next value for t1;
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next value for t1
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11
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select nextval(t1);
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nextval(t1)
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12
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drop sequence t1;
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CREATE SEQUENCE t9 start with 1 minvalue 1 maxvalue 10 increment by 1 cache 5 cycle;
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select previous value for t9;
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previous value for t9
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NULL
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select next value for t9;
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next value for t9
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1
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select previous value for t9, lastval(t9);
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previous value for t9 lastval(t9)
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1 1
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select next value for t9;
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next value for t9
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2
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select previous value for t9, lastval(t9);
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previous value for t9 lastval(t9)
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2 2
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select seq, previous value for t9, NEXT VALUE for t9, previous value for t9 from seq_1_to_20;
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seq previous value for t9 NEXT VALUE for t9 previous value for t9
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1 2 3 3
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2 3 4 4
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3 4 5 5
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4 5 6 6
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5 6 7 7
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6 7 8 8
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7 8 9 9
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8 9 10 10
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9 10 1 1
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10 1 2 2
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11 2 3 3
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12 3 4 4
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13 4 5 5
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14 5 6 6
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15 6 7 7
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16 7 8 8
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17 8 9 9
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18 9 10 10
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19 10 1 1
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20 1 2 2
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select * from t9;
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next_not_cached_value minimum_value maximum_value start_value increment cache_size cycle_option cycle_count
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6 1 10 1 1 5 1 2
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drop sequence t9;
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CREATE SEQUENCE s1 cache=0;
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select * from s1;
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next_not_cached_value minimum_value maximum_value start_value increment cache_size cycle_option cycle_count
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1 1 9223372036854775806 1 1 0 0 0
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select next value for s1;
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next value for s1
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1
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select next_not_cached_value from s1;
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next_not_cached_value
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2
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select next value for s1;
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next value for s1
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2
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select next_not_cached_value from s1;
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next_not_cached_value
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3
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DROP SEQUENCE s1;
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CREATE SEQUENCE s1 cache=1;
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select next_not_cached_value from s1;
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next_not_cached_value
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1
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select next value for s1;
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next value for s1
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1
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select next_not_cached_value from s1;
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next_not_cached_value
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2
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select next value for s1;
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next value for s1
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2
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select next_not_cached_value from s1;
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next_not_cached_value
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3
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DROP SEQUENCE s1;
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CREATE SEQUENCE s1 cache=2;
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select next_not_cached_value from s1;
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next_not_cached_value
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1
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select next value for s1;
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next value for s1
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1
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select next_not_cached_value from s1;
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next_not_cached_value
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3
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select next value for s1;
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next value for s1
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2
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select next_not_cached_value from s1;
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next_not_cached_value
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3
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DROP SEQUENCE s1;
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CREATE SEQUENCE s1;
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select next value for s1;
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next value for s1
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1
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select next value for s1;
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next value for s1
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2
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select next value for s1;
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next value for s1
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3
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select next value for s1;
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next value for s1
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4
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alter sequence s1 increment -2;
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select * from s1;
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next_not_cached_value minimum_value maximum_value start_value increment cache_size cycle_option cycle_count
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1001 1 9223372036854775806 1 -2 1000 0 0
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select next value for s1;
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next value for s1
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1001
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select next value for s1;
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next value for s1
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999
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alter sequence s1 restart 6;
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select next value for s1;
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next value for s1
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6
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select next value for s1;
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next value for s1
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4
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select next value for s1;
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next value for s1
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2
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select next value for s1;
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ERROR HY000: Sequence 'test.s1' has run out
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DROP SEQUENCE s1;
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CREATE SEQUENCE t1 start with 1 minvalue 1 maxvalue 10 increment by 1 cache 5 cycle;
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select next value for t1;
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next value for t1
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1
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select previous value for t1;
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previous value for t1
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1
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flush tables;
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select previous value for t1;
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previous value for t1
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1
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drop sequence t1;
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select previous value for t1;
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ERROR 42S02: Unknown SEQUENCE: 't1'
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CREATE SEQUENCE t1 start with 5 minvalue 1 maxvalue 10 increment by 1 cache 5 cycle;
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select previous value for t1;
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previous value for t1
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NULL
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select next value for t1;
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next value for t1
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5
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select previous value for t1;
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previous value for t1
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5
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drop sequence t1;
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CREATE or replace SEQUENCE s1 MINVALUE 1 MAXVALUE 9999999999
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INCREMENT BY 1 START WITH 3984356 CACHE 20 CYCLE engine=innodb;
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show create table s1;
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Table Create Table
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s1 CREATE TABLE `s1` (
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`next_not_cached_value` bigint(21) NOT NULL,
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`minimum_value` bigint(21) NOT NULL,
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`maximum_value` bigint(21) NOT NULL,
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`start_value` bigint(21) NOT NULL COMMENT 'start value when sequences is created or value if RESTART is used',
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`increment` bigint(21) NOT NULL COMMENT 'increment value',
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`cache_size` bigint(21) unsigned NOT NULL,
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`cycle_option` tinyint(1) unsigned NOT NULL COMMENT '0 if no cycles are allowed, 1 if the sequence should begin a new cycle when maximum_value is passed',
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`cycle_count` bigint(21) NOT NULL COMMENT 'How many cycles have been done'
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) ENGINE=InnoDB SEQUENCE=1
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select * from s1;
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next_not_cached_value minimum_value maximum_value start_value increment cache_size cycle_option cycle_count
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3984356 1 9999999999 3984356 1 20 1 0
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select NEXT VALUE FOR s1;
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NEXT VALUE FOR s1
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3984356
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select NEXT VALUE FOR s1;
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NEXT VALUE FOR s1
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3984357
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select NEXT VALUE FOR s1;
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NEXT VALUE FOR s1
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3984358
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select * from s1;
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next_not_cached_value minimum_value maximum_value start_value increment cache_size cycle_option cycle_count
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3984376 1 9999999999 3984356 1 20 1 0
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FLUSH TABLES;
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select * from s1;
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next_not_cached_value minimum_value maximum_value start_value increment cache_size cycle_option cycle_count
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3984376 1 9999999999 3984356 1 20 1 0
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select NEXT VALUE FOR s1;
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NEXT VALUE FOR s1
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3984376
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select * from s1;
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next_not_cached_value minimum_value maximum_value start_value increment cache_size cycle_option cycle_count
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3984396 1 9999999999 3984356 1 20 1 0
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drop sequence s1;
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CREATE SEQUENCE t1 start with 5 minvalue 1 maxvalue 10 increment by 1 cache 5 cycle;
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explain select next value for t1;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE NULL NULL NULL NULL NULL NULL NULL No tables used
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explain select next value for t1, minimum_value from t1;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 system NULL NULL NULL NULL 1
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drop table t1;
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CREATE SEQUENCE s1;
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CREATE TABLE t1 (a int);
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insert into t1 values (next value for s1);
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insert into t1 values (next value for s1);
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select * from t1;
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a
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1
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2
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drop table t1,s1;
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CREATE SEQUENCE s1;
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CREATE TABLE t1 (a int primary key auto_increment, b int default 0) engine=myisam;
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insert into t1 values (),(),(),(),(),(),();
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update t1 set b= next value for s1 where a <= 3;
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select * from t1;
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a b
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1 1
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2 2
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3 3
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4 0
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5 0
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6 0
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7 0
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drop table t1,s1;
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CREATE OR REPLACE SEQUENCE s1 MINVALUE 1 MAXVALUE 9999999999 INCREMENT BY 1 START WITH 3984356 nocache CYCLE engine='innodb';
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select * from s1;
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next_not_cached_value minimum_value maximum_value start_value increment cache_size cycle_option cycle_count
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3984356 1 9999999999 3984356 1 0 1 0
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select next value for s1;
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next value for s1
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3984356
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explain extended select next value for s1;
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id select_type table type possible_keys key key_len ref rows filtered Extra
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1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
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Warnings:
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Note 1003 select nextval(`test`.`s1`) AS `next value for s1`
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explain extended select previous value for s1;
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id select_type table type possible_keys key key_len ref rows filtered Extra
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1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
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Warnings:
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Note 1003 select lastval(`test`.`s1`) AS `previous value for s1`
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drop sequence s1;
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create table t1 (a int);
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select next value for t1;
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ERROR 42S02: 'test.t1' is not a SEQUENCE
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drop table t1;
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create sequence t1;
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select next value for t1;
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next value for t1
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1
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select next value for t1, minimum_value;
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ERROR 42S22: Unknown column 'minimum_value' in 'SELECT'
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drop sequence t1;
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#
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# MDEV-12854 Synchronize CREATE..SELECT data type and result set metadata data type for INT functions
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#
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CREATE SEQUENCE s1;
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SELECT
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NEXT VALUE FOR s1,
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PREVIOUS VALUE FOR s1;
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Catalog Database Table Table_alias Column Column_alias Type Length Max length Is_null Flags Decimals Charsetnr
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def NEXT VALUE FOR s1 8 20 1 Y 32896 0 63
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def PREVIOUS VALUE FOR s1 8 20 1 Y 32896 0 63
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NEXT VALUE FOR s1 PREVIOUS VALUE FOR s1
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1 1
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DROP SEQUENCE s1;
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#
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# MDEV-13720 ER_NOT_SEQUENCE for temporary table
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#
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create temporary table tmp (i int);
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select next value for tmp;
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ERROR 42S02: 'test.tmp' is not a SEQUENCE
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drop table tmp;
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#
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# Test negative numbers
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#
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create sequence s start with 1 minvalue=-1000 maxvalue=1000 increment -1;
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select next value for s;
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next value for s
|
|
1
|
|
select next value for s;
|
|
next value for s
|
|
0
|
|
flush tables;
|
|
select next value for s;
|
|
next value for s
|
|
-999
|
|
drop sequence s;
|
|
#
|
|
# MDEV-23823 NEXT VALUE crash on locked view
|
|
#
|
|
CREATE VIEW v AS SELECT 1;
|
|
LOCK TABLE v READ;
|
|
SELECT NEXT VALUE FOR v;
|
|
ERROR 42S02: 'test.v' is not a SEQUENCE
|
|
#
|
|
# MDEV-24018: SIGSEGV in Item_func_nextval::update_table on SELECT SETVAL
|
|
#
|
|
SELECT SETVAL (v,0);
|
|
ERROR 42S02: 'test.v' is not a SEQUENCE
|
|
UNLOCK TABLES;
|
|
DROP VIEW v;
|