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Timestamp-based versioning for InnoDB [closes #209]
* Removed integer_fields check * Reworked Vers_parse_info::check_sys_fields() * Misc renames * versioned as vers_sys_type_t * Removed versioned_by_sql(), versioned_by_engine() versioned() works as before; versioned(VERS_TIMESTAMP) is versioned_by_sql(); versioned(VERS_TRX_ID) is versioned_by_engine(). * create_tmp_table() fix * Foreign constraints for timestamp-based * Range auto-specifier fix * SQL: 1-row partition rotation fix [fixes #260] * Fix 'drop system versioning, algorithm=inplace'
This commit is contained in:
Aleksey Midenkov
GitHub
@@ -1,4 +1,4 @@
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### check System Versioning and conventional partitioning
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# Check conventional partitioning on temporal tables
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create table t1 (x int)
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with system versioning
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partition by range columns (x) (
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@@ -28,16 +28,17 @@ x
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select * from t1 partition (p1);
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x
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300
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### Engine change versioned/non-versioned prohibited
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create or replace table t1 (i int) engine=MyISAM with system versioning partition by hash(i);
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alter table t1 engine=InnoDB;
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ERROR HY000: Not allowed for versioned `test`.`t1`. Change to/from native versioning engine is prohibited.
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### check server-level partitioning
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# Engine change native <-> non-native versioning prohibited
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create or replace table t1 (i int) engine=DEFAULT_ENGINE with system versioning partition by hash(i);
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alter table t1 engine=NON_DEFAULT_ENGINE;
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ERROR HY000: Not allowed for temporal `test`.`t1`. Change to/from native system versioning engine is prohibited.
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# Check server-level partitioning
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## create errors
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create or replace table t1 (x int)
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partition by system_time (
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partition p0 history,
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partition pn current);
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ERROR HY000: Engine does not support System Versioning for `t1`
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ERROR HY000: Transaction system versioning for `t1` is not supported
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create or replace table t1 (x int);
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alter table t1
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partition by system_time (
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@@ -72,6 +73,7 @@ with system versioning
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partition by system_time (
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partition p0 history,
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partition pn current);
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## alter table
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alter table t1 add partition (
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partition p1 current);
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ERROR HY000: Wrong partitions consistency for `t1`: must have at least one HISTORY and exactly one last CURRENT
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@@ -83,14 +85,14 @@ show create table t1;
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Table Create Table
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t1 CREATE TABLE `t1` (
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`x` int(11) DEFAULT NULL,
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`sys_trx_start` ${SYS_TRX_TYPE} GENERATED ALWAYS AS ROW START,
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`sys_trx_end` ${SYS_TRX_TYPE} GENERATED ALWAYS AS ROW END,
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`sys_trx_start` SYS_DATATYPE GENERATED ALWAYS AS ROW START,
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`sys_trx_end` SYS_DATATYPE GENERATED ALWAYS AS ROW END,
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PERIOD FOR SYSTEM_TIME (`sys_trx_start`, `sys_trx_end`)
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) ENGINE=${INNODB_OR_MYISAM} DEFAULT CHARSET=latin1 WITH SYSTEM VERSIONING
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) ENGINE=DEFAULT_ENGINE DEFAULT CHARSET=latin1 WITH SYSTEM VERSIONING
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PARTITION BY SYSTEM_TIME
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(PARTITION `p0` HISTORY ENGINE = ${INNODB_OR_MYISAM},
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PARTITION `p1` HISTORY ENGINE = ${INNODB_OR_MYISAM},
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PARTITION `pn` CURRENT ENGINE = ${INNODB_OR_MYISAM})
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(PARTITION `p0` HISTORY ENGINE = DEFAULT_ENGINE,
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PARTITION `p1` HISTORY ENGINE = DEFAULT_ENGINE,
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PARTITION `pn` CURRENT ENGINE = DEFAULT_ENGINE)
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insert into t1 values (1), (2);
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alter table t1 drop partition pn;
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ERROR HY000: Wrong partitions consistency for `t1`: must have at least one HISTORY and exactly one last CURRENT
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@@ -101,6 +103,14 @@ select x from t1;
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x
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1
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2
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# Bug #260: incorrect IB partitioning warning
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create or replace table t1 (x int)
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with system versioning
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partition by system_time limit 1 (
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partition p0 history,
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partition pn current);
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alter table t1 change x big int;
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## insert, delete, update
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create or replace table t1 (x int)
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with system versioning
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partition by system_time (
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@@ -108,21 +118,20 @@ partition p0 history,
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partition pn current);
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set @now= now(6);
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insert into t1 values (1);
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set @ts_start= sys_commit_ts('sys_trx_start');
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set @ts_end= sys_commit_ts('sys_trx_end');
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set @str= concat('select x, ', @ts_start, ' < @now as A, ', @ts_end, ' > @now as B from t1 partition (p0)');
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set @str= concat('select x, sys_trx_start < @now as A, sys_trx_end > @now as B from t1 partition (p0)');
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prepare select_p0 from @str;
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set @str= concat('select x, ', @ts_start, ' > @now as C, ', @ts_end, ' = timestamp\'2038-01-19 03:14:07.999999\' as D from t1 partition (pn)');
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set @str= concat('select x, sys_trx_start > @now as C, sys_trx_end = timestamp\'2038-01-19 03:14:07.999999\' as D from t1 partition (pn)');
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prepare select_pn from @str;
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execute select_p0;
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x A B
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execute select_pn;
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x C D
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1 1 1
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explain partitions select * from t1;
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## pruning check
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explain partitions select * from tN;
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id select_type table partitions type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 pn system NULL NULL NULL NULL 1
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set @str= concat('select ', @ts_start, ' from t1 partition (pn) into @ts0');
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N SIMPLE tN pn system NULL NULL NULL NULL N
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set @str= concat('select sys_trx_start from t1 partition (pn) into @ts0');
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prepare stmt from @str;
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execute stmt;
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drop prepare stmt;
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@@ -133,7 +142,7 @@ x A B
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1 1 1
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execute select_pn;
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x C D
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set @str= concat('select ', @ts_start, ' from t1 partition (p0) into @ts1');
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set @str= concat('select sys_trx_start from t1 partition (p0) into @ts1');
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prepare stmt from @str;
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execute stmt;
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drop prepare stmt;
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@@ -148,7 +157,7 @@ x A B
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execute select_pn;
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x C D
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2 1 1
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set @str= concat('select ', @ts_start, ' from t1 partition (pn) into @ts0');
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set @str= concat('select sys_trx_start from t1 partition (pn) into @ts0');
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prepare stmt from @str;
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execute stmt;
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drop prepare stmt;
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@@ -163,15 +172,15 @@ x C D
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3 1 1
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drop prepare select_p0;
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drop prepare select_pn;
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set @str= concat('select ', @ts_start, ' from t1 partition (p0) where x = 2 into @ts1');
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set @str= concat('select sys_trx_start from t1 partition (p0) where x = 2 into @ts1');
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prepare stmt from @str;
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execute stmt;
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drop prepare stmt;
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set @str= concat('select ', @ts_end, ' from t1 partition (p0) where x = 2 into @ts2');
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set @str= concat('select sys_trx_end from t1 partition (p0) where x = 2 into @ts2');
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prepare stmt from @str;
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execute stmt;
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drop prepare stmt;
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set @str= concat('select ', @ts_start, ' from t1 partition (pn) into @ts3');
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set @str= concat('select sys_trx_start from t1 partition (pn) into @ts3');
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prepare stmt from @str;
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execute stmt;
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drop prepare stmt;
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@@ -181,6 +190,7 @@ select @ts0 = @ts1;
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select @ts2 = @ts3;
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@ts2 = @ts3
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1
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## rotation by LIMIT
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create or replace table t1 (x int)
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with system versioning
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partition by system_time limit 0 (
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@@ -190,7 +200,7 @@ partition pn current);
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ERROR HY000: Wrong parameters for partitioned `t1`: wrong value for 'LIMIT'
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create or replace table t1 (x int)
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with system versioning
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partition by system_time limit 1 (
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partition by system_time limit 2 (
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partition p0 history,
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partition p1 history,
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partition pn current);
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@@ -198,38 +208,44 @@ show create table t1;
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Table Create Table
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t1 CREATE TABLE `t1` (
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`x` int(11) DEFAULT NULL,
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`sys_trx_start` ${SYS_TRX_TYPE} GENERATED ALWAYS AS ROW START,
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`sys_trx_end` ${SYS_TRX_TYPE} GENERATED ALWAYS AS ROW END,
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`sys_trx_start` SYS_DATATYPE GENERATED ALWAYS AS ROW START,
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`sys_trx_end` SYS_DATATYPE GENERATED ALWAYS AS ROW END,
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PERIOD FOR SYSTEM_TIME (`sys_trx_start`, `sys_trx_end`)
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) ENGINE=${INNODB_OR_MYISAM} DEFAULT CHARSET=latin1 WITH SYSTEM VERSIONING
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PARTITION BY SYSTEM_TIME LIMIT 1
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(PARTITION `p0` HISTORY ENGINE = ${INNODB_OR_MYISAM},
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PARTITION `p1` HISTORY ENGINE = ${INNODB_OR_MYISAM},
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PARTITION `pn` CURRENT ENGINE = ${INNODB_OR_MYISAM})
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) ENGINE=DEFAULT_ENGINE DEFAULT CHARSET=latin1 WITH SYSTEM VERSIONING
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PARTITION BY SYSTEM_TIME LIMIT 2
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(PARTITION `p0` HISTORY ENGINE = DEFAULT_ENGINE,
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PARTITION `p1` HISTORY ENGINE = DEFAULT_ENGINE,
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PARTITION `pn` CURRENT ENGINE = DEFAULT_ENGINE)
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alter table t1 drop partition non_existent;
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ERROR HY000: Error in list of partitions to DROP
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insert into t1 values (1), (2);
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insert into t1 values (1), (2), (3);
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select * from t1 partition (pn);
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x
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1
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2
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3
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### warn about partition switching
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delete from t1;
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Warnings:
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Note 4116 Versioned table `test`.`t1`: switching from partition `p0` to `p1`
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select * from t1 partition (p0);
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x
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1
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2
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select * from t1 partition (p1);
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x
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2
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insert into t1 values (3);
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3
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insert into t1 values (4), (5);
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### warn about full partition
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delete from t1;
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Warnings:
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Warning 4114 Versioned table `test`.`t1`: partition `p1` is full, add more HISTORY partitions
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select * from t1 partition (p1);
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select * from t1 partition (p1) order by x;
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x
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2
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3
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4
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5
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## rotation by INTERVAL
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create or replace table t1 (x int)
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with system versioning
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partition by system_time interval 0 second (
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@@ -262,22 +278,26 @@ Note 4116 Versioned table `test`.`t1`: switching from partition `p0` to `p1`
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select * from t1 partition (p1);
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x
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4
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## Subpartitions
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create or replace table t1 (x int)
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with system versioning
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partition by system_time limit 1
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partition by system_time limit 2
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subpartition by key (x)
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subpartitions 2 (
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partition p0 history,
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partition p1 history,
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partition pn current);
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insert into t1 (x) values (1), (2), (3);
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insert into t1 (x) values (1), (2), (3), (4), (5);
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select * from t1 partition (pnsp0);
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x
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1
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3
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5
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select * from t1 partition (pnsp1);
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x
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2
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4
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### warn about partition switching and about full partition
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delete from t1;
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Warnings:
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Note 4116 Versioned table `test`.`t1`: switching from partition `p0` to `p1`
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@@ -285,14 +305,16 @@ Warning 4114 Versioned table `test`.`t1`: partition `p1` is full, add more HISTO
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select * from t1 partition (p0sp0);
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x
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1
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3
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select * from t1 partition (p0sp1);
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x
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select * from t1 partition (p1sp0);
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x
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3
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5
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select * from t1 partition (p1sp1);
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x
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2
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4
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create or replace table t1 (a bigint)
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with system versioning
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partition by range (a)
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