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dfdedd46e4
This patch extends the timestamp from 2038-01-19 03:14:07.999999 to 2106-02-07 06:28:15.999999 for 64 bit hardware and OS where 'long' is 64 bits. This is true for 64 bit Linux but not for Windows. This is done by treating the 32 bit stored int as unsigned instead of signed. This is safe as MariaDB has never accepted dates before the epoch (1970). The benefit of this approach that for normal timestamp the storage is compatible with earlier version. However for tables using system versioning we before stored a timestamp with the year 2038 as the 'max timestamp', which is used to detect current values. This patch stores the new 2106 year max value as the max timestamp. This means that old tables using system versioning needs to be updated with mariadb-upgrade when moving them to 11.4. That will be done in a separate commit.
88 lines
2.9 KiB
Text
88 lines
2.9 KiB
Text
set @@time_zone='+00:00';
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create table t1(
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x int unsigned,
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sys_start bigint unsigned as row start invisible,
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sys_end bigint unsigned as row end invisible,
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period for system_time (sys_start, sys_end))
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with system versioning engine=innodb;
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create table t2(x int unsigned) engine=innodb;
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start transaction;
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insert into t1(x) values(1);
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commit;
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start transaction;
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insert into t2(x) values(1);
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savepoint a;
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insert into t1(x) values(1);
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rollback to a;
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commit;
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insert into t2(x) values (1);
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create or replace table t1 (
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x int,
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y int as (x) virtual,
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sys_trx_start bigint unsigned as row start invisible,
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sys_trx_end bigint unsigned as row end invisible,
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period for system_time (sys_trx_start, sys_trx_end)
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) engine=innodb with system versioning;
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insert into t1 values (1, null);
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update t1 set x= x + 1;
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select x, y, sys_trx_end = 18446744073709551615 as current from t1 for system_time all;
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x y current
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2 2 1
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1 1 0
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create or replace table t1 (
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x int,
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row_start timestamp(6) as row start invisible,
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row_end timestamp(6) as row end invisible,
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period for system_time (row_start, row_end)
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) with system versioning;
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insert into t1 values (1), (2);
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insert into t1 (row_start) select row_end from t1;
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ERROR HY000: The value specified for generated column 'row_start' in table 't1' has been ignored
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set sql_mode='';
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insert into t1 (row_start, row_end) values (DEFAULT, 1);
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Warnings:
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Warning 1906 The value specified for generated column 'row_end' in table 't1' has been ignored
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set sql_mode=default;
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select @@sql_mode into @saved_mode;
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set sql_mode= '';
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insert into t1 (x, row_start, row_end) values (3, 4, 5);
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Warnings:
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Warning 1906 The value specified for generated column 'row_start' in table 't1' has been ignored
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Warning 1906 The value specified for generated column 'row_end' in table 't1' has been ignored
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set sql_mode= @saved_mode;
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insert into t1 (row_start, row_end) values (DEFAULT, DEFAULT);
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select * from t1;
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x
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1
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2
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NULL
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3
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NULL
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# MDEV-14792 INSERT without column list into table with explicit versioning columns produces bad data
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create or replace table t1 (
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i int,
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s timestamp(6) as row start,
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e timestamp(6) as row end,
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c varchar(8),
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period for system_time(s, e))
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with system versioning;
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insert into t1 values (1, null, null, 'foo');
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select i, c, e>LEFT(SYS_TIME_MAX, 10) AS current_row from t1;;
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i c current_row
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1 foo 1
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drop table t1;
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drop table t2;
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#
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# MDEV-14871 Server crashes in fill_record / fill_record_n_invoke_before_triggers upon inserting into versioned table with trigger
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#
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create or replace table t1 (pk int primary key) with system versioning;
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create trigger tr before insert on t1 for each row select 1 into @a;
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insert into t1 values (1),(2);
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drop table t1;
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create table t1 (pk int primary key, i int) with system versioning;
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replace into t1 values (1,10),(1,100),(1,1000);
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select pk,i,row_end > '2038-01-01' from t1 for system_time all;
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pk i row_end > '2038-01-01'
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1 1000 1
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drop table t1;
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set @@time_zone=default;
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