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call mtr.add_suppression("need more HISTORY partitions");
create table t (a int);
delete history from t before system_time now();
ERROR HY000: Table `t` is not system-versioned
create or replace table t (
a int,
row_start SYS_TYPE as row start invisible,
row_end SYS_TYPE as row end invisible,
period for system_time (row_start, row_end))
with system versioning;
insert into t values (1);
update t set a=2;
set @test = 'correct';
create trigger trg_before before delete on t for each row set @test = 'incorrect';
create trigger trg_after after delete on t for each row set @test = 'incorrect';
delete history from t;
select @test from t;
@test
correct
drop table t;
create or replace table t (
a int,
row_start SYS_TYPE as row start invisible,
row_end SYS_TYPE as row end invisible,
period for system_time (row_start, row_end))
with system versioning;
insert into t values (1), (2);
update t set a=11 where a=1;
set @ts1=now(6);
update t set a=22 where a=2;
select * from t for system_time all;
a
11
22
1
2
delete history from t before system_time timestamp @ts1;
select * from t for system_time all;
a
11
22
2
prepare stmt from 'delete history from t';
execute stmt;
drop prepare stmt;
select * from t for system_time all;
a
11
22
delete from t;
create or replace procedure truncate_sp()
begin
delete history from t before system_time timestamp now(6);
end~~
call truncate_sp;
select * from t for system_time all;
a
drop procedure truncate_sp;
# Truncate partitioned
create or replace table t (a int) with system versioning
partition by system_time limit 1 partitions 3;
insert into t values (1);
update t set a= 2;
update t set a= 3;
delete history from t;
Warnings:
Warning 4114 Versioned table `test`.`t`: last HISTORY partition (`p1`) is out of LIMIT, need more HISTORY partitions
# The above warning is one command late (MDEV-20345) ^^^
select * from t for system_time all;
a
3
# VIEW
create or replace table t (
i int,
row_start SYS_TYPE as row start invisible,
row_end SYS_TYPE as row end invisible,
period for system_time (row_start, row_end))
with system versioning;
delete history from t;
create or replace view v as select * from t;
delete history from v;
ERROR 42S02: 'v' is a view
create or replace table t (i int);
delete history from t;
ERROR HY000: Table `t` is not system-versioned
create or replace view v as select * from t;
delete history from v;
ERROR 42S02: 'v' is a view
prepare stmt from 'delete history from t';
ERROR HY000: Table `t` is not system-versioned
drop table t;
drop view v;
create or replace table t (i int);
create or replace view v as select * from t;
drop table v;
ERROR 42S02: 'test.v' is a view
lock table v write;
delete history from v before system_time now(6);
ERROR 42S02: 'v' is a view
unlock tables;
drop view v;
drop table t;
create table t1 (i int) with system versioning;
create procedure pr() delete history from t1 before system_time now();
call pr;
call pr;
drop procedure pr;
drop table t1;
# MDEV-15966 Behavior for TRUNCATE versioned table is not documented and not covered by tests
create or replace table t1 (id int);
create or replace table t2 (id int) with system versioning;
# force cleaning table shares
flush tables t1, t2;
truncate table t1;
truncate table t2;
ERROR HY000: System-versioned tables do not support TRUNCATE TABLE
# fetch table shares
describe t1;
Field Type Null Key Default Extra
id int(11) YES NULL
describe t2;
Field Type Null Key Default Extra
id int(11) YES NULL
truncate table t1;
truncate table t2;
ERROR HY000: System-versioned tables do not support TRUNCATE TABLE
# enter locked tables mode
lock tables t1 WRITE, t2 WRITE;
truncate t1;
truncate t2;
ERROR HY000: System-versioned tables do not support TRUNCATE TABLE
unlock tables;
drop table t2;
#
# MDEV-19814 Assertion `update->n_fields < ulint(table->n_cols + table->n_v_cols)' on DELETE HISTORY
#
create or replace table t1 (
f varchar(1),
row_start SYS_TYPE as row start,
row_end SYS_TYPE as row end,
period for system_time (row_start, row_end))
with system versioning;
insert into t1 (f) values ('a'), ('b'), ('c'), ('d'), ('e'), ('f'), ('g'), ('h');
delete from t1;
delete history from t1;
drop table t1;
#
# MDEV-20186 Wrong result or Assertion on INSERT after DELETE HISTORY
#
create or replace table t1 (a int check (a > 0)) with system versioning;
delete history from t1;
insert into t1 values (1);
select * from t1;
a
1
drop table t1;
#
# MDEV-25468 DELETE HISTORY may delete current data on system-versioned table
#
create or replace table t1 (x int) with system versioning;
insert into t1 values (1);
delete history from t1 before system_time '2039-01-01 23:00';
select * from t1;
x
1
explain extended delete history from t1 before system_time '2039-01-01 23:00';
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 1 100.00 Using where
create or replace procedure p() delete history from t1 before system_time '2039-01-01 23:00';
call p;
select * from t1;
x
1
call p;
select * from t1;
x
1
drop procedure p;
prepare stmt from "delete history from t1 before system_time '2039-01-01 23:00'";
execute stmt;
select * from t1;
x
1
execute stmt;
select * from t1;
x
1
drop prepare stmt;
drop table t1;
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