create table t (id int, s date, e date, period for apptime(s,e));
insert into t values(1, '1999-01-01', '2018-12-12');
insert into t values(1, '1999-01-01', '2017-01-01');
insert into t values(1, '2017-01-01', '2019-01-01');
insert into t values(2, '1998-01-01', '2018-12-12');
insert into t values(3, '1997-01-01', '2015-01-01');
insert into t values(4, '2016-01-01', '2020-01-01');
insert into t values(5, '2010-01-01', '2015-01-01');
create or replace table t1 (id int, s date, e date, period for apptime(s,e));
insert t1 select * from t;
create or replace table t2 (id int, s date, e date, period for apptime(s,e));
insert t2 select * from t;
update t for portion of apptime from '2000-01-01' to '2018-01-01'
       set id=id + 6;
select * from t;
id	s	e
1	1999-01-01	2000-01-01
1	1999-01-01	2000-01-01
1	2018-01-01	2018-12-12
1	2018-01-01	2019-01-01
10	2016-01-01	2018-01-01
11	2010-01-01	2015-01-01
2	1998-01-01	2000-01-01
2	2018-01-01	2018-12-12
3	1997-01-01	2000-01-01
4	2018-01-01	2020-01-01
7	2000-01-01	2017-01-01
7	2000-01-01	2018-01-01
7	2017-01-01	2018-01-01
8	2000-01-01	2018-01-01
9	2000-01-01	2015-01-01
# Check triggers
create or replace table log_tbl(id int auto_increment primary key, log text) engine=myisam;
create or replace procedure log(s text)
insert into log_tbl(log) values(s);
create trigger tr1upd_t1 before update on t1
for each row call log(CONCAT('>UPD: ', old.id, ", ",  old.s, ", ",  old.e, ' -> ', new.id, ", ",  new.s, ", ",  new.e));
create trigger tr2upd_t1 after  update on t1
for each row call log(CONCAT('<UPD: ', old.id, ", ",  old.s, ", ",  old.e, ' -> ', new.id, ", ",  new.s, ", ",  new.e));
create trigger tr1del_t1 before delete on t1
for each row call log(CONCAT('>DEL: ', old.id, ", ",  old.s, ", ",  old.e));
create trigger tr2del_t1 after  delete on t1
for each row call log(CONCAT('<DEL: ', old.id, ", ",  old.s, ", ",  old.e));
create trigger tr1ins_t1 before insert on t1
for each row call log(CONCAT('>INS: ', new.id, ", ",  new.s, ", ",  new.e));
create trigger tr2ins_t1 after  insert on t1
for each row call log(CONCAT('<INS: ', new.id, ", ",  new.s, ", ",  new.e));
update t1 for portion of apptime from '2000-01-01' to '2018-01-01'
       set id=id + 6;
select * from t1;
id	s	e
1	1999-01-01	2000-01-01
1	1999-01-01	2000-01-01
1	2018-01-01	2018-12-12
1	2018-01-01	2019-01-01
10	2016-01-01	2018-01-01
11	2010-01-01	2015-01-01
2	1998-01-01	2000-01-01
2	2018-01-01	2018-12-12
3	1997-01-01	2000-01-01
4	2018-01-01	2020-01-01
7	2000-01-01	2017-01-01
7	2000-01-01	2018-01-01
7	2017-01-01	2018-01-01
8	2000-01-01	2018-01-01
9	2000-01-01	2015-01-01
select * from log_tbl order by id;
id	log
1	>UPD: 1, 1999-01-01, 2018-12-12 -> 7, 2000-01-01, 2018-01-01
2	>INS: 1, 1999-01-01, 2000-01-01
3	<INS: 1, 1999-01-01, 2000-01-01
4	>INS: 1, 2018-01-01, 2018-12-12
5	<INS: 1, 2018-01-01, 2018-12-12
6	<UPD: 1, 1999-01-01, 2018-12-12 -> 7, 2000-01-01, 2018-01-01
7	>UPD: 1, 1999-01-01, 2017-01-01 -> 7, 2000-01-01, 2017-01-01
8	>INS: 1, 1999-01-01, 2000-01-01
9	<INS: 1, 1999-01-01, 2000-01-01
10	<UPD: 1, 1999-01-01, 2017-01-01 -> 7, 2000-01-01, 2017-01-01
11	>UPD: 1, 2017-01-01, 2019-01-01 -> 7, 2017-01-01, 2018-01-01
12	>INS: 1, 2018-01-01, 2019-01-01
13	<INS: 1, 2018-01-01, 2019-01-01
14	<UPD: 1, 2017-01-01, 2019-01-01 -> 7, 2017-01-01, 2018-01-01
15	>UPD: 2, 1998-01-01, 2018-12-12 -> 8, 2000-01-01, 2018-01-01
16	>INS: 2, 1998-01-01, 2000-01-01
17	<INS: 2, 1998-01-01, 2000-01-01
18	>INS: 2, 2018-01-01, 2018-12-12
19	<INS: 2, 2018-01-01, 2018-12-12
20	<UPD: 2, 1998-01-01, 2018-12-12 -> 8, 2000-01-01, 2018-01-01
21	>UPD: 3, 1997-01-01, 2015-01-01 -> 9, 2000-01-01, 2015-01-01
22	>INS: 3, 1997-01-01, 2000-01-01
23	<INS: 3, 1997-01-01, 2000-01-01
24	<UPD: 3, 1997-01-01, 2015-01-01 -> 9, 2000-01-01, 2015-01-01
25	>UPD: 4, 2016-01-01, 2020-01-01 -> 10, 2016-01-01, 2018-01-01
26	>INS: 4, 2018-01-01, 2020-01-01
27	<INS: 4, 2018-01-01, 2020-01-01
28	<UPD: 4, 2016-01-01, 2020-01-01 -> 10, 2016-01-01, 2018-01-01
29	>UPD: 5, 2010-01-01, 2015-01-01 -> 11, 2010-01-01, 2015-01-01
30	<UPD: 5, 2010-01-01, 2015-01-01 -> 11, 2010-01-01, 2015-01-01
# INSERT trigger only also works
create or replace table log_tbl(id int auto_increment primary key, log text) engine=myisam;
create or replace procedure log(s text)
insert into log_tbl(log) values(s);
create trigger tr1upd_t2 before update on t2
for each row call log(CONCAT('>UPD: ', old.id, ", ",  old.s, ", ",  old.e, ' -> ', new.id, ", ",  new.s, ", ",  new.e));
create trigger tr2upd_t2 after  update on t2
for each row call log(CONCAT('<UPD: ', old.id, ", ",  old.s, ", ",  old.e, ' -> ', new.id, ", ",  new.s, ", ",  new.e));
create trigger tr1del_t2 before delete on t2
for each row call log(CONCAT('>DEL: ', old.id, ", ",  old.s, ", ",  old.e));
create trigger tr2del_t2 after  delete on t2
for each row call log(CONCAT('<DEL: ', old.id, ", ",  old.s, ", ",  old.e));
create trigger tr1ins_t2 before insert on t2
for each row call log(CONCAT('>INS: ', new.id, ", ",  new.s, ", ",  new.e));
create trigger tr2ins_t2 after  insert on t2
for each row call log(CONCAT('<INS: ', new.id, ", ",  new.s, ", ",  new.e));
drop trigger tr1upd_t2;
drop trigger tr2upd_t2;
update t2 for portion of apptime from '2000-01-01' to '2018-01-01'
       set id=id + 6;
select * from t2;
id	s	e
1	1999-01-01	2000-01-01
1	1999-01-01	2000-01-01
1	2018-01-01	2018-12-12
1	2018-01-01	2019-01-01
10	2016-01-01	2018-01-01
11	2010-01-01	2015-01-01
2	1998-01-01	2000-01-01
2	2018-01-01	2018-12-12
3	1997-01-01	2000-01-01
4	2018-01-01	2020-01-01
7	2000-01-01	2017-01-01
7	2000-01-01	2018-01-01
7	2017-01-01	2018-01-01
8	2000-01-01	2018-01-01
9	2000-01-01	2015-01-01
select * from log_tbl order by id;
id	log
1	>INS: 1, 1999-01-01, 2000-01-01
2	<INS: 1, 1999-01-01, 2000-01-01
3	>INS: 1, 2018-01-01, 2018-12-12
4	<INS: 1, 2018-01-01, 2018-12-12
5	>INS: 1, 1999-01-01, 2000-01-01
6	<INS: 1, 1999-01-01, 2000-01-01
7	>INS: 1, 2018-01-01, 2019-01-01
8	<INS: 1, 2018-01-01, 2019-01-01
9	>INS: 2, 1998-01-01, 2000-01-01
10	<INS: 2, 1998-01-01, 2000-01-01
11	>INS: 2, 2018-01-01, 2018-12-12
12	<INS: 2, 2018-01-01, 2018-12-12
13	>INS: 3, 1997-01-01, 2000-01-01
14	<INS: 3, 1997-01-01, 2000-01-01
15	>INS: 4, 2018-01-01, 2020-01-01
16	<INS: 4, 2018-01-01, 2020-01-01
select * from t for portion of apptime from 0 to 1 for system_time all;
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'portion of apptime from 0 to 1 for system_time all' at line 1
update t for portion of apptime from 0 to 1 for system_time all set id=1;
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'system_time all set id=1' at line 1
# Modifying period start/end fields is forbidden.
# SQL16: 14.14 <update statement: searched>, Syntax Rules, 7)a)ii)
# Neither BSTARTCOL nor BENDCOL shall be an explicit <object column>
# contained in the <set clause list>.
update t for portion of apptime from '2000-01-01' to '2018-01-01'
       set id= id + 6, s=subdate(s, 5), e=adddate(e, 5);
ERROR HY000: Column `s` used in period `apptime` specified in update SET list
# Precision timestamps
create or replace table t (id int, s timestamp(5), e timestamp(5),
period for apptime(s,e));
insert into t values(1, '1999-01-01', '2018-12-12');
insert into t values(1, '1999-01-01', '2017-01-01');
update t for portion of apptime from '2000-01-01 00:00:00.00015'
                                to '2018-01-01 12:34:56.31415'
         set id= id + 5;
select * from t;
id	s	e
1	1999-01-01 00:00:00.00000	2000-01-01 00:00:00.00015
1	1999-01-01 00:00:00.00000	2000-01-01 00:00:00.00015
1	2018-01-01 12:34:56.31415	2018-12-12 00:00:00.00000
6	2000-01-01 00:00:00.00015	2017-01-01 00:00:00.00000
6	2000-01-01 00:00:00.00015	2018-01-01 12:34:56.31415
# Strings
create or replace table t (id int, str text, s date, e date,
period for apptime(s,e));
insert into t values(1, 'data', '1999-01-01', '2018-12-12');
insert into t values(1, 'other data', '1999-01-01', '2018-12-12');
update t for portion of apptime from '2000-01-01' to '2018-01-01'
       set id= id + 5;
select * from t;
id	str	s	e
1	data	1999-01-01	2000-01-01
1	data	2018-01-01	2018-12-12
1	other data	1999-01-01	2000-01-01
1	other data	2018-01-01	2018-12-12
6	data	2000-01-01	2018-01-01
6	other data	2000-01-01	2018-01-01
# multi-table UPDATE is impossible
create or replace table t1(x int);
update t for portion of apptime from '2000-01-01' to '2018-01-01', t1
set t.id= t.id + 5;
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near ' t1
set t.id= t.id + 5' at line 1
update t1 set x= (select id from t for portion of apptime from '2000-01-01' to '2018-01-01');
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'portion of apptime from '2000-01-01' to '2018-01-01')' at line 1
# single-table views
create or replace view v1 as select * from t where id<10;
update v1 for portion of apptime from '2000-01-01' to '2018-01-01' set id= id + 5;
ERROR 42S02: 'v1' is a view
# multi-table views
create or replace view v1 as select * from t, t1 where x=id;
update v1 for portion of apptime from '2000-01-01' to '2018-01-01' set id= id + 5;
ERROR 42S02: 'v1' is a view
# SQL16: 14.14 <update statement: searched>, Syntax Rules, 7)a) iii-iv)
# Let FROMVAL be <point in time 1>. FROMVAL shall not generally contain a
# reference to a column of T or a <routine invocation>
# whose subject routine is an SQL-invoked routine that
# is possibly non-deterministic or that possibly modifies SQL-data.
# ...Same for <point in time 2> (TOVAL)
update t for portion of apptime from 5*(5+s) to 1 set t.id= t.id + 5;
ERROR HY000: Expression in FOR PORTION OF must be constant
update t for portion of apptime from 1 to e set t.id= t.id + 5;
ERROR HY000: Expression in FOR PORTION OF must be constant
set @s= '2000-01-01';
set @e= '2018-01-01';
create or replace function f() returns date return @e;
create or replace function g() returns date not deterministic return @e;
create or replace function h() returns date deterministic return @e;
update t for portion of apptime from @s to f() set t.id= t.id + 5;
ERROR HY000: Expression in FOR PORTION OF must be constant
update t for portion of apptime from @s to g() set t.id= t.id + 5;
ERROR HY000: Expression in FOR PORTION OF must be constant
# success
update t for portion of apptime from @s to h() set t.id= t.id + 5;
# select value is cached
update t for portion of apptime from (select s from t2 limit 1) to h() set t.id= t.id + 5;
# auto_inrement field is updated
create or replace table t (id int primary key auto_increment, x int,
s date, e date, period for apptime(s, e));
insert into t values (default, 1, '1999-01-01', '2018-12-12');
update t for portion of apptime from '2000-01-01' to '2018-01-01' set x= x + 5;
select * from t;
id	x	s	e
1	6	2000-01-01	2018-01-01
2	1	1999-01-01	2000-01-01
3	1	2018-01-01	2018-12-12
truncate t;
insert into t values (default, 1, '1999-01-01', '2018-12-12');
update t for portion of apptime from '2000-01-01' to '2018-01-01' set x= 1;
select * from t;
id	x	s	e
1	1	2000-01-01	2018-01-01
2	1	1999-01-01	2000-01-01
3	1	2018-01-01	2018-12-12
# generated columns are updated
create or replace table t (x int, s date, e date,
xs date as (s) stored, xe date as (e) stored,
period for apptime(s, e));
insert into t values(1, '1999-01-01', '2018-12-12', default, default);
select * from t;
x	s	e	xs	xe
1	1999-01-01	2018-12-12	1999-01-01	2018-12-12
update t for portion of apptime from '2000-01-01' to '2018-01-01' set x= x + 5;
select *, xs=s and xe=e from t;
x	s	e	xs	xe	xs=s and xe=e
1	1999-01-01	2000-01-01	1999-01-01	2000-01-01	1
1	2018-01-01	2018-12-12	2018-01-01	2018-12-12	1
6	2000-01-01	2018-01-01	2000-01-01	2018-01-01	1
# MDEV-18921 Server crashes in bitmap_bits_set or bitmap_is_set upon
# UPDATE IGNORE .. FOR PORTION with binary logging
create or replace table t1 (f int, s date, e date, period for app(s,e));
insert into t1 values (1,'2016-09-21','2019-06-14');
update ignore t1 for portion of app from '2019-03-13' to '2019-03-14' set f = 1;
drop table t,t1,t2,log_tbl;
drop view v1;
drop function f;
drop function g;
drop function h;
drop procedure log;