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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.
152 lines
3.5 KiB
Plaintext
152 lines
3.5 KiB
Plaintext
# Basic + delete from view
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create or replace table t1(
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XNo int unsigned,
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sys_start SYS_DATATYPE as row start invisible,
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sys_end SYS_DATATYPE 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(XNo) values(0);
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insert into t1(XNo) values(1);
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insert into t1(XNo) values(2);
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insert into t1(XNo) values(3);
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insert into t1(XNo) values(4);
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insert into t1(XNo) values(5);
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insert into t1(XNo) values(6);
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insert into t1(XNo) values(7);
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insert into t1(XNo) values(8);
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insert into t1(XNo) values(9);
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select XNo, sys_end < MAXVAL from t1 for system_time all;
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XNo sys_end < MAXVAL
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0 0
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1 0
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2 0
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3 0
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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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8 0
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9 0
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delete from t1 where XNo = 0;
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delete from t1 where XNo = 1;
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delete from t1 where XNo > 5;
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create view vt1 as select XNo from t1;
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select XNo as XNo_vt1 from vt1;
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XNo_vt1
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2
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3
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4
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5
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delete from vt1 where XNo = 3;
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select XNo as XNo_vt1 from vt1;
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XNo_vt1
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2
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4
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5
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drop view vt1;
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drop table t1;
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# Check sys_start, sys_end
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create or replace table t1(
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x int,
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sys_start SYS_DATATYPE as row start invisible,
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sys_end SYS_DATATYPE 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(x) values (1);
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select sys_start into @sys_start from t1;
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delete from t1;
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select * from t1;
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x
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select x = 1 as A, sys_start = @sys_start as B, sys_end > sys_start as C from t1 for system_time all;
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A B C
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1 1 1
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drop table t1;
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# Multi-delete
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create or replace table t1(
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x int,
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y int,
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sys_start SYS_DATATYPE as row start invisible,
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sys_end SYS_DATATYPE 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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create or replace table t2 like t1;
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insert into t1(x, y) values (1, 1), (2, 2), (3, 3), (14, 4);
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insert into t2(x, y) values (11, 1), (12, 2), (13, 32), (14, 4);
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delete t1, t2 from t1 join t2 where t1.y = 3 and t2.y = 32;
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select x as t1_x from t1;
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t1_x
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1
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2
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14
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select x as t2_x from t2;
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t2_x
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11
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12
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14
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delete t1, t2 from t1 join t2 where t1.x = t2.x;
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select x as t1_x from t1;
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t1_x
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1
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2
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select x as t2_x from t2;
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t2_x
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11
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12
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select x as t1_x_all from t1 for system_time all;
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t1_x_all
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1
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2
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3
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14
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select x as t2_x_all from t2 for system_time all;
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t2_x_all
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11
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12
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13
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14
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drop table t1;
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drop table t2;
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# Update + delete
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create or replace table t1 (x int) with system versioning;
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insert into t1 values (1);
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update t1 set x= 2;
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delete from t1;
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select x from t1 for system_time all;
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x
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2
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1
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drop table t1;
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#
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# MDEV-18929 2nd execution of SP does not detect ER_VERS_NOT_VERSIONED
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#
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create or replace table t1 (a int) with system versioning;
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replace into t1 values (1), (2);
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create or replace trigger tr before delete on t1 for each row delete from xx;
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create or replace procedure pr() delete from t1;
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call pr;
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ERROR 42S02: Table 'test.xx' doesn't exist
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call pr;
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ERROR 42S02: Table 'test.xx' doesn't exist
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drop procedure pr;
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drop trigger tr;
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drop table t1;
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#
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# MDEV-21138 Assertion `col->ord_part' or `f.col->ord_part' failed in row_build_index_entry_low
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#
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create table t1 (
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f1 int, f2 text, f3 int, fulltext (f2), key(f1), key(f3),
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foreign key r (f3) references t1 (f1) on delete set null)
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with system versioning engine innodb;
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insert into t1 values (1, repeat('a', 8193), 1), (1, repeat('b', 8193), 1);
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select f1, f3, check_row_ts(row_start, row_end) from t1;
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f1 f3 check_row_ts(row_start, row_end)
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1 1 CURRENT ROW
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1 1 CURRENT ROW
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delete from t1;
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select f1, f3, check_row_ts(row_start, row_end) from t1 for system_time all;
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f1 f3 check_row_ts(row_start, row_end)
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1 1 HISTORICAL ROW
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1 NULL ERROR: row_end == row_start
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1 1 HISTORICAL ROW
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drop table t1;
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