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932ec586aa
First part of the fix (row0mysql.cc) addresses external columns when adding history row on referential action. The full data must be retrieved before the row is inserted. Second part of the fix (the rest) avoids duplicate primary key error between the history row generated on referential action and the history row generated by SQL command. Both command and referential action can happen on same table since foreign key can be self-reference (parent and child tables are same). Moreover, the self-reference can refer multiple rows when the key is non-unique. In such case history is generated by referential action occured on first row but processed all rows by a matched key. The second round is when the next row is processed by a command but history already exists. In such case we check TRX_ID of existing history row and if it is the same we assume the above situation and skip adding one more history row or failing the command.
509 lines
16 KiB
Plaintext
509 lines
16 KiB
Plaintext
set default_storage_engine= innodb;
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create or replace table t1 (
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x int,
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sys_trx_start bigint(20) unsigned as row start invisible,
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sys_trx_end bigint(20) unsigned 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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# No history inside the transaction
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start transaction;
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insert into t1 (x) values (1);
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update t1 set x= x + 1;
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update t1 set x= x + 1;
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commit;
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select *, sys_trx_start > 1, sys_trx_end from t1 for system_time all;
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x sys_trx_start > 1 sys_trx_end
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3 1 18446744073709551615
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# ALTER ADD SYSTEM VERSIONING should write to mysql.transaction_registry
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set @@system_versioning_alter_history=keep;
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create or replace table t1 (x int);
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insert into t1 values (1);
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alter table t1
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add column s bigint unsigned as row start,
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add column e bigint unsigned as row end,
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add period for system_time(s, e),
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add system versioning,
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algorithm=inplace;
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select s from t1 into @trx_start;
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select count(*) = 1 from mysql.transaction_registry where transaction_id = @trx_start;
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count(*) = 1
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1
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create or replace table t1 (x int);
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select count(*) from mysql.transaction_registry into @tmp;
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alter table t1
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add column s bigint unsigned as row start,
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add column e bigint unsigned as row end,
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add period for system_time(s, e),
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add system versioning,
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algorithm=inplace;
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select count(*) = @tmp from mysql.transaction_registry;
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count(*) = @tmp
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1
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create or replace table t1 (x int);
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insert into t1 values (1);
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alter table t1
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add column s bigint unsigned as row start,
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add column e bigint unsigned as row end,
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add period for system_time(s, e),
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add system versioning,
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algorithm=copy;
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select s from t1 into @trx_start;
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select count(*) = 1 from mysql.transaction_registry where transaction_id = @trx_start;
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count(*) = 1
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1
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create or replace table t1 (x int);
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select count(*) from mysql.transaction_registry into @tmp;
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alter table t1
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add column s bigint unsigned as row start,
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add column e bigint unsigned as row end,
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add period for system_time(s, e),
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add system versioning,
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algorithm=copy;
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select count(*) = @tmp + 1 from mysql.transaction_registry;
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count(*) = @tmp + 1
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1
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# TRX_ID to TIMESTAMP versioning switch
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create or replace table t1 (
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x int,
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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;
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insert into t1 values (1);
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alter table t1 drop column sys_start, drop column sys_end;
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select row_end = 18446744073709551615 as transaction_based from t1 for system_time all;
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transaction_based
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1
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# Simple vs SEES algorithms
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create or replace table t1 (
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x int,
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sys_start bigint(20) unsigned as row start invisible,
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sys_end bigint(20) unsigned as row end invisible,
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period for system_time (sys_start, sys_end)
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) with system versioning;
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set transaction isolation level read committed;
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start transaction;
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insert into t1 values (1);
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connect con1,localhost,root,,test;
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set transaction isolation level read committed;
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start transaction;
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insert into t1 values (2);
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connect con2,localhost,root,,test;
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set transaction isolation level read committed;
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start transaction;
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insert into t1 values (3);
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commit;
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disconnect con2;
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connection default;
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set @ts1= sysdate(6);
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connection con1;
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commit;
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disconnect con1;
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connection default;
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set @ts2= sysdate(6);
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commit;
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set @ts3= sysdate(6);
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select sys_start from t1 where x = 1 into @trx_id1;
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select sys_start from t1 where x = 2 into @trx_id2;
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select sys_start from t1 where x = 3 into @trx_id3;
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select @trx_id1 < @trx_id2, @trx_id2 < @trx_id3;
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@trx_id1 < @trx_id2 @trx_id2 < @trx_id3
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1 1
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select @ts1 < @ts2, @ts2 < @ts3;
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@ts1 < @ts2 @ts2 < @ts3
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1 1
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# MVCC is resolved
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select * from t1 for system_time as of transaction @trx_id1;
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x
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1
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2
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3
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select * from t1 for system_time as of timestamp @ts1;
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x
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3
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select * from t1 for system_time as of transaction @trx_id2;
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x
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2
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3
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select * from t1 for system_time as of timestamp @ts2;
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x
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2
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3
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select * from t1 for system_time as of transaction @trx_id3;
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x
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3
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select * from t1 for system_time as of timestamp @ts3;
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x
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1
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2
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3
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#
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# MDEV-15427 IB: TRX_ID based operations inside transaction generate history
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#
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create or replace table t1(
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x int(10),
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row_start bigint(20) unsigned as row start,
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row_end bigint(20) unsigned as row end,
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period for system_time(row_start, row_end)
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) with system versioning;
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begin;
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insert into t1 (x) values (1);
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delete from t1;
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commit;
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select x from t1 for system_time all;
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x
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insert into t1 (x) values (2);
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begin;
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update t1 set x= 3;
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update t1 set x= 4;
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commit;
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select x, row_start < row_end from t1 for system_time all;
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x row_start < row_end
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4 1
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2 1
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# MDEV-16010 Too many rows with AS OF point_in_the_past_or_NULL
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create or replace table t1 (
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x int,
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row_start bigint unsigned as row start invisible,
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row_end bigint unsigned as row end invisible,
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period for system_time (row_start, row_end)
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) with system versioning engine innodb;
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insert into t1 (x) values (1);
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delete from t1;
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select * from t1 for system_time as of timestamp'1990-1-1 00:00';
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x
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select * from t1 for system_time as of NULL;
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x
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# MDEV-16024 transaction_registry.begin_timestamp is wrong for explicit transactions
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create or replace table t1 (
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x int(11) default null,
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row_start bigint(20) unsigned generated always as row start invisible,
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row_end bigint(20) unsigned generated always as row end invisible,
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period for system_time (row_start, row_end)
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) engine=innodb with system versioning;
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begin;
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set @ts1= now(6);
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insert into t1 values (1);
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commit;
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select row_start from t1 into @trx_id;
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select trt_begin_ts(@trx_id) <= @ts1 as BEGIN_TS_GOOD;
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BEGIN_TS_GOOD
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1
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drop table t1;
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#
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# MDEV-16100 FOR SYSTEM_TIME erroneously resolves string user variables as transaction IDs
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#
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CREATE TABLE t1 (
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x INT,
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sys_trx_start BIGINT UNSIGNED AS ROW START,
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sys_trx_end BIGINT UNSIGNED AS ROW END,
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PERIOD FOR SYSTEM_TIME (sys_trx_start, sys_trx_end)
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) WITH SYSTEM VERSIONING ENGINE=INNODB;
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INSERT INTO t1 (x) VALUES (1);
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SET @ts= DATE_ADD(NOW(), INTERVAL 1 YEAR);
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EXPLAIN EXTENDED SELECT x FROM t1 FOR SYSTEM_TIME AS OF TRANSACTION @ts;
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id select_type table type possible_keys key key_len ref rows filtered Extra
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1 SIMPLE t1 ALL NULL NULL NULL NULL 1 100.00 Using where
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Warnings:
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Note 1003 select `test`.`t1`.`x` AS `x` from `test`.`t1` FOR SYSTEM_TIME AS OF TRANSACTION @`ts` where trt_trx_sees(`test`.`t1`.`sys_trx_end`,@`ts`) and trt_trx_sees_eq(@`ts`,`test`.`t1`.`sys_trx_start`)
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EXPLAIN EXTENDED SELECT x FROM t1 FOR SYSTEM_TIME AS OF TIMESTAMP @ts;
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id select_type table type possible_keys key key_len ref rows filtered Extra
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1 SIMPLE t1 ALL NULL NULL NULL NULL 1 100.00 Using where
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Warnings:
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Note 1003 select `test`.`t1`.`x` AS `x` from `test`.`t1` FOR SYSTEM_TIME AS OF TIMESTAMP @`ts` where trt_trx_sees(`test`.`t1`.`sys_trx_end`,<cache>(trt_trx_id(@`ts`))) and trt_trx_sees_eq(<cache>(trt_trx_id(@`ts`)),`test`.`t1`.`sys_trx_start`)
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EXPLAIN EXTENDED SELECT x FROM t1 FOR SYSTEM_TIME AS OF @ts;
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id select_type table type possible_keys key key_len ref rows filtered Extra
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1 SIMPLE t1 ALL NULL NULL NULL NULL 1 100.00 Using where
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Warnings:
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Note 1003 select `test`.`t1`.`x` AS `x` from `test`.`t1` FOR SYSTEM_TIME AS OF TIMESTAMP @`ts` where trt_trx_sees(`test`.`t1`.`sys_trx_end`,<cache>(trt_trx_id(@`ts`))) and trt_trx_sees_eq(<cache>(trt_trx_id(@`ts`)),`test`.`t1`.`sys_trx_start`)
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DROP TABLE t1;
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#
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# Testing AS OF with expressions of various kinds and data types
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#
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CREATE TABLE t1
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(
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x INT,
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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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) WITH SYSTEM VERSIONING;
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INSERT INTO t1 VALUES (1);
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CREATE TABLE t2
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(
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x INT,
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sys_trx_start TIMESTAMP(6) AS ROW START INVISIBLE,
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sys_trx_end TIMESTAMP(6) 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 t2 VALUES (1);
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#
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# ROW is not supported
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#
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SELECT * FROM t1 FOR SYSTEM_TIME AS OF (1,1);
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ERROR HY000: Illegal parameter data type row for operation 'FOR SYSTEM_TIME'
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SELECT * FROM t2 FOR SYSTEM_TIME AS OF (1,1);
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ERROR HY000: Illegal parameter data type row for operation 'FOR SYSTEM_TIME'
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#
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# DOUBLE is not supported, use explicit CAST
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#
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SELECT * FROM t1 FOR SYSTEM_TIME AS OF RAND();
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ERROR HY000: Illegal parameter data type double for operation 'FOR SYSTEM_TIME'
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SELECT * FROM t1 FOR SYSTEM_TIME AS OF (RAND());
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ERROR HY000: Illegal parameter data type double for operation 'FOR SYSTEM_TIME'
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SELECT * FROM t1 FOR SYSTEM_TIME AS OF COALESCE(RAND());
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ERROR HY000: Illegal parameter data type double for operation 'FOR SYSTEM_TIME'
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SELECT * FROM t2 FOR SYSTEM_TIME AS OF RAND();
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ERROR HY000: Illegal parameter data type double for operation 'FOR SYSTEM_TIME'
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SELECT * FROM t2 FOR SYSTEM_TIME AS OF (RAND());
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ERROR HY000: Illegal parameter data type double for operation 'FOR SYSTEM_TIME'
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SELECT * FROM t2 FOR SYSTEM_TIME AS OF COALESCE(RAND());
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ERROR HY000: Illegal parameter data type double for operation 'FOR SYSTEM_TIME'
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#
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# DECIMAL is not supported, use explicit CAST
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#
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SELECT * FROM t1 FOR SYSTEM_TIME AS OF 10.1;
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ERROR HY000: Illegal parameter data type decimal for operation 'FOR SYSTEM_TIME'
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SELECT * FROM t1 FOR SYSTEM_TIME AS OF COALESCE(10.1);
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ERROR HY000: Illegal parameter data type decimal for operation 'FOR SYSTEM_TIME'
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SELECT * FROM t2 FOR SYSTEM_TIME AS OF 10.1;
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ERROR HY000: Illegal parameter data type decimal for operation 'FOR SYSTEM_TIME'
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SELECT * FROM t2 FOR SYSTEM_TIME AS OF COALESCE(10.1);
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ERROR HY000: Illegal parameter data type decimal for operation 'FOR SYSTEM_TIME'
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#
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# YEAR is not supported, use explicit CAST
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#
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BEGIN NOT ATOMIC
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DECLARE var YEAR;
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SELECT * FROM t1 FOR SYSTEM_TIME AS OF var;
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END;
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$$
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ERROR HY000: Illegal parameter data type year for operation 'FOR SYSTEM_TIME'
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BEGIN NOT ATOMIC
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DECLARE var YEAR;
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SELECT * FROM t2 FOR SYSTEM_TIME AS OF var;
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END;
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$$
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ERROR HY000: Illegal parameter data type year for operation 'FOR SYSTEM_TIME'
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#
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# ENUM is not supported, use explicit CAST
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#
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BEGIN NOT ATOMIC
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DECLARE var ENUM('xxx') DEFAULT 'xxx';
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SELECT * FROM t1 FOR SYSTEM_TIME AS OF var;
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END;
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$$
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ERROR HY000: Illegal parameter data type enum for operation 'FOR SYSTEM_TIME'
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BEGIN NOT ATOMIC
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DECLARE var ENUM('xxx') DEFAULT 'xxx';
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SELECT * FROM t2 FOR SYSTEM_TIME AS OF var;
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END;
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$$
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ERROR HY000: Illegal parameter data type enum for operation 'FOR SYSTEM_TIME'
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#
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# SET is not supported, use explicit CAST
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#
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BEGIN NOT ATOMIC
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DECLARE var SET('xxx') DEFAULT 'xxx';
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SELECT * FROM t1 FOR SYSTEM_TIME AS OF var;
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END;
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$$
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ERROR HY000: Illegal parameter data type set for operation 'FOR SYSTEM_TIME'
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BEGIN NOT ATOMIC
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DECLARE var SET('xxx') DEFAULT 'xxx';
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SELECT * FROM t2 FOR SYSTEM_TIME AS OF var;
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END;
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$$
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ERROR HY000: Illegal parameter data type set for operation 'FOR SYSTEM_TIME'
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#
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# BIT is resolved to TRANSACTION
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#
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BEGIN NOT ATOMIC
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DECLARE var BIT(10);
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SELECT * FROM t1 FOR SYSTEM_TIME AS OF var;
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END;
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$$
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x
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BEGIN NOT ATOMIC
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DECLARE var BIT(10);
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SELECT * FROM t2 FOR SYSTEM_TIME AS OF var;
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END;
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$$
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ERROR HY000: Transaction-precise system versioning for `t2` is not supported
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#
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# String literals resolve to TIMESTAMP
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#
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SELECT * FROM t1 FOR SYSTEM_TIME AS OF '2038-12-30 00:00:00';
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x
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1
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SELECT * FROM t2 FOR SYSTEM_TIME AS OF '2038-12-30 00:00:00';
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x
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#
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# HEX hybrids resolve to TRANSACTION
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#
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SELECT * FROM t1 FOR SYSTEM_TIME AS OF (0xFFFFFFFF);
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ERROR HY000: TRX_ID 4294967295 not found in `mysql.transaction_registry`
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SELECT * FROM t2 FOR SYSTEM_TIME AS OF (0xFFFFFFFF);
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ERROR HY000: Transaction-precise system versioning for `t2` is not supported
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#
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# BIT literals resolve to TRANSACTION
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#
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SELECT * FROM t1 FOR SYSTEM_TIME AS OF (b'11111111111111111111111111111111');
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ERROR HY000: TRX_ID 4294967295 not found in `mysql.transaction_registry`
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SELECT * FROM t2 FOR SYSTEM_TIME AS OF (b'11111111111111111111111111111111');
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ERROR HY000: Transaction-precise system versioning for `t2` is not supported
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DROP TABLE t1, t2;
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#
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# MDEV-16094 Crash when using AS OF with a stored function
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#
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CREATE FUNCTION fts() RETURNS DATETIME RETURN '2001-01-01 10:20:30';
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CREATE FUNCTION ftx() RETURNS BIGINT UNSIGNED RETURN 1;
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CREATE TABLE ttx
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(
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x INT,
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start_timestamp BIGINT UNSIGNED GENERATED ALWAYS AS ROW START,
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end_timestamp BIGINT UNSIGNED GENERATED ALWAYS AS ROW END,
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PERIOD FOR SYSTEM_TIME(start_timestamp, end_timestamp)
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) ENGINE=InnoDB WITH SYSTEM VERSIONING;
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CREATE TABLE tts
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(
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x INT,
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start_timestamp TIMESTAMP(6) GENERATED ALWAYS AS ROW START,
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end_timestamp TIMESTAMP(6) GENERATED ALWAYS AS ROW END,
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PERIOD FOR SYSTEM_TIME(start_timestamp, end_timestamp)
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) ENGINE=InnoDB WITH SYSTEM VERSIONING;
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SELECT * FROM tts FOR SYSTEM_TIME AS OF fts();
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x start_timestamp end_timestamp
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SELECT * FROM tts FOR SYSTEM_TIME AS OF ftx();
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ERROR HY000: Transaction-precise system versioning for `tts` is not supported
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SELECT * FROM ttx FOR SYSTEM_TIME AS OF fts();
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x start_timestamp end_timestamp
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SELECT * FROM ttx FOR SYSTEM_TIME AS OF ftx();
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x start_timestamp end_timestamp
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DROP TABLE tts;
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DROP TABLE ttx;
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DROP FUNCTION fts;
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DROP FUNCTION ftx;
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#
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# MDEV-16330 Allow instant change of WITH SYSTEM VERSIONING column attribute
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#
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SET @@SYSTEM_VERSIONING_ALTER_HISTORY=KEEP;
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CREATE TABLE t (
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a INT,
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b INT,
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row_start BIGINT UNSIGNED AS ROW START INVISIBLE,
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row_end BIGINT UNSIGNED AS ROW END INVISIBLE,
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PERIOD FOR SYSTEM_TIME(row_start, row_end)
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) WITH SYSTEM VERSIONING ENGINE=INNODB;
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INSERT INTO t VALUES (1,1);
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# without table rebuild
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SELECT c.prtype FROM INFORMATION_SCHEMA.INNODB_SYS_COLUMNS AS c
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INNER JOIN INFORMATION_SCHEMA.INNODB_SYS_TABLES AS t
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ON c.table_id=t.table_id
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WHERE t.name='test/t' AND c.name='a';
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prtype
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50179
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ALTER TABLE t
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CHANGE a a INT WITHOUT SYSTEM VERSIONING;
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affected rows: 0
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info: Records: 0 Duplicates: 0 Warnings: 0
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SELECT c.prtype FROM INFORMATION_SCHEMA.INNODB_SYS_COLUMNS AS c
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INNER JOIN INFORMATION_SCHEMA.INNODB_SYS_TABLES AS t
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ON c.table_id=t.table_id
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WHERE t.name='test/t' AND c.name='a';
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prtype
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1027
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UPDATE t SET a=11;
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SELECT COUNT(*) FROM t FOR SYSTEM_TIME ALL;
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COUNT(*)
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1
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# with table rebuild
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SELECT c.prtype FROM INFORMATION_SCHEMA.INNODB_SYS_COLUMNS AS c
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INNER JOIN INFORMATION_SCHEMA.INNODB_SYS_TABLES AS t
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ON c.table_id=t.table_id
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WHERE t.name='test/t' AND c.name='a';
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prtype
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1027
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ALTER TABLE t
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CHANGE a a INT WITH SYSTEM VERSIONING,
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ADD PRIMARY KEY pk(a);
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affected rows: 0
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info: Records: 0 Duplicates: 0 Warnings: 1
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Warnings:
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Warning 1280 Name 'pk' ignored for PRIMARY key.
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SELECT c.prtype FROM INFORMATION_SCHEMA.INNODB_SYS_COLUMNS AS c
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INNER JOIN INFORMATION_SCHEMA.INNODB_SYS_TABLES AS t
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ON c.table_id=t.table_id
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WHERE t.name='test/t' AND c.name='a';
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prtype
|
|
50435
|
|
UPDATE t SET a=1;
|
|
SELECT COUNT(*) FROM t FOR SYSTEM_TIME ALL;
|
|
COUNT(*)
|
|
2
|
|
SHOW CREATE TABLE t;
|
|
Table Create Table
|
|
t CREATE TABLE `t` (
|
|
`a` int(11) NOT NULL,
|
|
`b` int(11) DEFAULT NULL,
|
|
`row_start` bigint(20) unsigned GENERATED ALWAYS AS ROW START INVISIBLE,
|
|
`row_end` bigint(20) unsigned GENERATED ALWAYS AS ROW END INVISIBLE,
|
|
PRIMARY KEY (`a`,`row_end`),
|
|
PERIOD FOR SYSTEM_TIME (`row_start`, `row_end`)
|
|
) ENGINE=InnoDB DEFAULT CHARSET=latin1 WITH SYSTEM VERSIONING
|
|
# handles VIRTUAL columns too
|
|
CREATE OR REPLACE TABLE t (
|
|
a INT AS (b + 1),
|
|
b INT,
|
|
row_start BIGINT UNSIGNED AS ROW START INVISIBLE,
|
|
row_end BIGINT UNSIGNED AS ROW END INVISIBLE,
|
|
PERIOD FOR SYSTEM_TIME(row_start, row_end)
|
|
) WITH SYSTEM VERSIONING ENGINE=INNODB;
|
|
INSERT INTO t VALUES (DEFAULT, 1);
|
|
SELECT c.prtype FROM INFORMATION_SCHEMA.INNODB_SYS_COLUMNS AS c
|
|
INNER JOIN INFORMATION_SCHEMA.INNODB_SYS_TABLES AS t
|
|
ON c.table_id=t.table_id
|
|
WHERE t.name='test/t' AND c.name='b';
|
|
prtype
|
|
50179
|
|
ALTER TABLE t
|
|
CHANGE b b INT WITHOUT SYSTEM VERSIONING;
|
|
affected rows: 0
|
|
info: Records: 0 Duplicates: 0 Warnings: 0
|
|
SELECT c.prtype FROM INFORMATION_SCHEMA.INNODB_SYS_COLUMNS AS c
|
|
INNER JOIN INFORMATION_SCHEMA.INNODB_SYS_TABLES AS t
|
|
ON c.table_id=t.table_id
|
|
WHERE t.name='test/t' AND c.name='b';
|
|
prtype
|
|
1027
|
|
UPDATE t SET b=11;
|
|
SELECT COUNT(*) FROM t FOR SYSTEM_TIME ALL;
|
|
COUNT(*)
|
|
1
|
|
DROP TABLE t;
|
|
SET @@SYSTEM_VERSIONING_ALTER_HISTORY=ERROR;
|
|
SELECT count(*) from mysql.transaction_registry where begin_timestamp>=commit_timestamp;
|
|
count(*)
|
|
0
|
|
# MDEV-18875 Assertion `thd->transaction.stmt.ha_list == __null ||
|
|
# trans == &thd->transaction.stmt' failed or bogus ER_DUP_ENTRY upon
|
|
# ALTER TABLE with versioning
|
|
create or replace table t (x int) engine=innodb;
|
|
set autocommit= 0;
|
|
alter table t
|
|
algorithm=copy,
|
|
add column row_start bigint unsigned as row start,
|
|
add column row_end bigint unsigned as row end,
|
|
add period for system_time(row_start,row_end),
|
|
with system versioning;
|
|
set autocommit= 1;
|
|
# MDEV-18865 Assertion `t->first->versioned_by_id()'
|
|
# failed in innodb_prepare_commit_versioned
|
|
create or replace table t (x int) engine=innodb;
|
|
insert into t values (0);
|
|
alter table t add `row_start` bigint unsigned as row start,
|
|
add `row_end` bigint unsigned as row end,
|
|
add period for system_time(`row_start`,`row_end`),
|
|
modify x int after row_start,
|
|
with system versioning;
|
|
create or replace database test;
|