mirror of
https://github.com/MariaDB/server.git
synced 2025-07-21 21:22:27 +03:00
244 lines
5.2 KiB
Plaintext
244 lines
5.2 KiB
Plaintext
create table t1(
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x int unsigned,
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y int unsigned,
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sys_trx_start SYS_DATATYPE as row start invisible,
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sys_trx_end SYS_DATATYPE as row end invisible,
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period for system_time (sys_trx_start, sys_trx_end))
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with system versioning;
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insert into t1(x, y) values (1, 1000), (2, 2000), (3, 3000), (4, 4000), (5, 5000), (6, 6000), (7, 7000), (8, 8000), (9, 9000);
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select x, y from t1;
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x y
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1 1000
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2 2000
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3 3000
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4 4000
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5 5000
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6 6000
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7 7000
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8 8000
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9 9000
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update t1 set y = y + 1 where x > 7;
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select x, y from t1;
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x y
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1 1000
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2 2000
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3 3000
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4 4000
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5 5000
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6 6000
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7 7000
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8 8001
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9 9001
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select x, y from t1 for system_time all;
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x y
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1 1000
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2 2000
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3 3000
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4 4000
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5 5000
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6 6000
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7 7000
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8 8001
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9 9001
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8 8000
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9 9000
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drop table t1;
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create table t1 (
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id bigint primary key,
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x int,
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y int without system versioning,
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sys_trx_start SYS_DATATYPE as row start invisible,
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sys_trx_end SYS_DATATYPE as row end invisible,
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period for system_time (sys_trx_start, sys_trx_end))
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with system versioning;
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insert into t1 values(1, 1, 1);
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set @ins_t= now(6);
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select sys_trx_start into @tmp1 from t1;
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update t1 set x= 11, y= 11 where id = 1;
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select @tmp1 < sys_trx_start as A1, x, y from t1;
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A1 x y
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1 11 11
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select sys_trx_start into @tmp1 from t1;
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update t1 set y= 1 where id = 1;
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select @tmp1 = sys_trx_start as A2, x from t1;
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A2 x
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1 11
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drop table t1;
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create table t1 (
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x int,
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y int,
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sys_trx_start SYS_DATATYPE as row start invisible,
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sys_trx_end SYS_DATATYPE as row end invisible,
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period for system_time (sys_trx_start, sys_trx_end)
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) with system versioning;
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insert into t1 (x, y) values (1, 1), (2, 1), (3, 1), (4, 1), (5, 1);
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start transaction;
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update t1 set y= y + 1 where x = 3;
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update t1 set y= y + 1 where x = 2;
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update t1 set y= y + 1 where x = 3;
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update t1 set y= y + 1 where x > 3;
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update t1 set y= y + 1 where x > 4;
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commit;
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select x, y, sys_trx_end = MAXVAL as current from t1 for system_time all;
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x y current
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1 1 1
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2 2 1
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3 3 1
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4 2 1
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5 3 1
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3 1 0
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2 1 0
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3 2 0
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4 1 0
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5 1 0
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5 2 0
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drop table t1;
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create table t1 (
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id int primary key auto_increment,
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x int,
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sys_trx_start SYS_DATATYPE as row start invisible,
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sys_trx_end SYS_DATATYPE as row end invisible,
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period for system_time (sys_trx_start, sys_trx_end))
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with system versioning;
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set @t0= now(6);
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insert into t1 (x) values (1);
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set @t1= now(6);
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update t1 set x= 2 where id = 1;
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set @t2= now(6);
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update t1 set x= 3 where id = 1;
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select x from t1 for system_time as of timestamp @t0;
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x
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select x from t1 for system_time as of timestamp @t1;
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x
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1
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select x from t1 for system_time as of timestamp @t2;
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x
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2
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select x from t1 for system_time as of timestamp now(6);
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x
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3
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drop table t1;
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create table t1(
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x int unsigned,
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sys_trx_end SYS_DATATYPE as row end invisible,
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sys_trx_start SYS_DATATYPE as row start invisible,
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y int unsigned,
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period for system_time (sys_trx_start, sys_trx_end),
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primary key(x, y))
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with system versioning;
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insert into t1(x, y) values (1, 1000), (3, 3000), (4, 4000), (5, 5000);
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insert into t1(x, y) values(3, 3000) on duplicate key update y = y+1;
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insert into t1(x, y) values(4, 4444) on duplicate key update y = y+1;
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select x, y from t1 for system_time all;
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x y
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1 1000
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3 3000
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3 3001
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4 4000
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4 4444
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5 5000
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select x, y from t1;
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x y
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1 1000
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3 3001
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4 4000
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4 4444
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5 5000
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drop table t1;
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create table t1 (
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x int unsigned,
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y int unsigned,
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sys_trx_start SYS_DATATYPE as row start invisible,
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sys_trx_end SYS_DATATYPE as row end invisible,
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period for system_time (sys_trx_start, sys_trx_end))
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with system versioning;
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create table t2 like t1;
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insert into t1(x, y) values (1, 1000), (2, 2000), (3, 3000), (4, 4000), (5, 5000), (6, 6000), (7, 7000), (8, 8000), (9, 9000);
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insert into t2(x, y) values (1, 1010), (2, 2010), (3, 3010), (4, 4010), (5, 5010), (6, 6010), (7, 7010), (8, 8010), (9, 9010);
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update t1, t2 set t1.y = t1.x + t1.y, t2.y = t2.x + t2.y where t1.x > 7 and t2.x < 7;
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select x, y from t1 for system_time all;
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x y
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1 1000
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2 2000
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3 3000
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4 4000
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5 5000
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6 6000
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7 7000
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8 8008
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9 9009
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8 8000
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9 9000
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select x, y from t1;
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x y
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1 1000
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2 2000
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3 3000
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4 4000
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5 5000
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6 6000
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7 7000
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8 8008
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9 9009
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select x, y from t2 for system_time all;
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x y
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1 1011
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2 2012
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3 3013
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4 4014
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5 5015
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6 6016
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7 7010
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8 8010
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9 9010
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1 1010
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2 2010
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3 3010
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4 4010
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5 5010
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6 6010
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select x, y from t2;
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x y
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1 1011
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2 2012
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3 3013
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4 4014
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5 5015
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6 6016
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7 7010
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8 8010
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9 9010
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drop table t1;
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drop table t2;
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create table t1 (
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id bigint primary key without system versioning,
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name varchar(128),
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salary bigint without system versioning,
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sys_trx_start SYS_DATATYPE as row start invisible,
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sys_trx_end SYS_DATATYPE as row end invisible,
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period for system_time (sys_trx_start, sys_trx_end))
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with system versioning;
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create table t2 like t1;
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insert into t1 values (1, "Jeremy", 3000);
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insert into t2 values (1, "Jeremy", 4000);
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select sys_trx_start into @tmp1 from t1;
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select sys_trx_start into @tmp2 from t2;
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update t1, t2 set t1.name= "Jerry", t2.name= "Jerry" where t1.id = t2.id and t1.name = "Jeremy";
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select @tmp1 < sys_trx_start as A1, name from t1;
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A1 name
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1 Jerry
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select @tmp2 < sys_trx_start as A2, name from t2;
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A2 name
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1 Jerry
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select sys_trx_start into @tmp1 from t1;
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select sys_trx_start into @tmp2 from t2;
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update t1, t2 set t1.salary= 2500, t2.salary= 2500 where t1.id = t2.id and t1.name = "Jerry";
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select @tmp1 = sys_trx_start as B1, salary from t1;
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B1 salary
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1 2500
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select @tmp2 = sys_trx_start as B2, salary from t2;
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B2 salary
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1 2500
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drop table t1;
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drop table t2;
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