drop table if exists t1,t2,t3;
CREATE TABLE t1 (  `id` int(11) NOT NULL default '0', `id2` int(11) NOT NULL default '0', `id3` int(11) NOT NULL default '0', `dummy1` char(30) default NULL, PRIMARY KEY  (`id`,`id2`), KEY `index_id3` (`id3`)) ENGINE=MyISAM;
insert into t1 (id,id2) values (1,1),(1,2),(1,3);
LOCK TABLE t1 WRITE;
select dummy1,count(distinct id) from t1 group by dummy1;
dummy1	count(distinct id)
NULL	1
update t1 set id=-1 where id=1;
LOCK TABLE t1 READ;
update t1 set id=1 where id=1;
ERROR HY000: Table 't1' was locked with a READ lock and can't be updated
create table t2 SELECT * from t1;
ERROR HY000: Table 't2' was not locked with LOCK TABLES
create temporary table t2 SELECT * from t1;
drop table if exists t2;
unlock tables;
create table t2 SELECT * from t1;
LOCK TABLE t1 WRITE,t2 write;
insert into t2 SELECT * from t1;
update t1 set id=1 where id=-1;
drop table t1,t2;
CREATE TABLE t1 (
index1 smallint(6) default NULL,
nr smallint(6) default NULL,
KEY index1(index1)
) ENGINE=MyISAM;
CREATE TABLE t2 (
nr smallint(6) default NULL,
name varchar(20) default NULL
) ENGINE=MyISAM;
INSERT INTO t2 VALUES (1,'item1');
INSERT INTO t2 VALUES (2,'item2');
lock tables t1 write, t2 read;
insert into t1 select 1,nr from t2 where name='item1';
insert into t1 select 2,nr from t2 where name='item2';
unlock tables;
check table t1;
Table	Op	Msg_type	Msg_text
test.t1	check	status	OK
lock tables t1 write;
check table t2;
Table	Op	Msg_type	Msg_text
test.t2	check	Error	Table 't2' was not locked with LOCK TABLES
test.t2	check	status	Operation failed
insert into t1 select index1,nr from t1;
ERROR HY000: Table 't1' was not locked with LOCK TABLES
unlock tables;
lock tables t1 write, t1 as t1_alias read;
insert into t1 select index1,nr from t1 as t1_alias;
drop table t1,t2;
ERROR HY000: Table 't2' was not locked with LOCK TABLES
unlock tables;
drop table t1,t2;
create table t1 (c1 int);
create table t2 (c1 int);
create table t3 (c1 int);
lock tables t1 write, t2 write, t3 write;
drop table t2, t3, t1;
create table t1 (c1 int);
create table t2 (c1 int);
create table t3 (c1 int);
lock tables t1 write, t2 write, t3 write, t1 as t4 read;
alter table t2 add column c2 int;
drop table t1, t2, t3;
create table t1 ( a int(11) not null auto_increment, primary key(a));
create table t2 ( a int(11) not null auto_increment, primary key(a));
lock tables t1 write, t2 read;
delete from t1 using t1,t2 where t1.a=t2.a;
delete t1 from t1,t2 where t1.a=t2.a;
delete from t2 using t1,t2 where t1.a=t2.a;
ERROR HY000: Table 't2' was locked with a READ lock and can't be updated
delete t2 from t1,t2 where t1.a=t2.a;
ERROR HY000: Table 't2' was locked with a READ lock and can't be updated
drop table t1,t2;
ERROR HY000: Table 't2' was locked with a READ lock and can't be updated
unlock tables;
drop table t2,t1;
End of 4.1 tests.
drop table if exists t1;
create table t1 (a int);
lock table t1 write;
flush tables with read lock;
ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction
unlock tables;
drop table t1;
DROP TABLE IF EXISTS t1;
CREATE TABLE t1 (i INT);
LOCK TABLES mysql.time_zone READ, mysql.proc READ, t1 READ;
UNLOCK TABLES;
LOCK TABLES mysql.time_zone READ, mysql.proc READ, t1 WRITE;
UNLOCK TABLES;
LOCK TABLES mysql.time_zone READ, mysql.proc READ;
UNLOCK TABLES;
LOCK TABLES mysql.time_zone WRITE, mysql.proc WRITE;
UNLOCK TABLES;
LOCK TABLES mysql.time_zone READ, mysql.proc WRITE, t1 READ;
ERROR HY000: You can't combine write-locking of system tables with other tables or lock types
LOCK TABLES mysql.time_zone WRITE, mysql.proc WRITE, t1 READ;
ERROR HY000: You can't combine write-locking of system tables with other tables or lock types
LOCK TABLES mysql.time_zone WRITE, mysql.proc WRITE, t1 WRITE;
ERROR HY000: You can't combine write-locking of system tables with other tables or lock types
LOCK TABLES mysql.time_zone READ, mysql.proc WRITE;
ERROR HY000: You can't combine write-locking of system tables with other tables or lock types
DROP TABLE t1;

Bug#5719 impossible to lock VIEW

Just covering existing behaviour with tests. 
Consistency has not been found here.

drop view if exists v_bug5719;
drop table if exists t1, t2, t3;
create table t1 (a int);
create temporary table t2 (a int);
create table t3 (a int);
create view v_bug5719 as select 1;
lock table v_bug5719 write;
select * from t1;
ERROR HY000: Table 't1' was not locked with LOCK TABLES

Allowed to select from a temporary talbe under LOCK TABLES

select * from t2;
a
select * from t3;
ERROR HY000: Table 't3' was not locked with LOCK TABLES
select * from v_bug5719;
1
1
drop view v_bug5719;
ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction

sic: did not left LOCK TABLES mode automatically

select * from t1;
ERROR HY000: Table 't1' was not locked with LOCK TABLES
unlock tables;
create or replace view v_bug5719 as select * from t1;
lock tables v_bug5719 write;
select * from v_bug5719;
a

Allowed to use an underlying table under LOCK TABLES <view>

select * from t1;
a

Allowed to select from a temporary table under LOCK TABLES

select * from t2;
a
select * from t3;
ERROR HY000: Table 't3' was not locked with LOCK TABLES
Dropping of implicitly locked table is disallowed.
drop table t1;
ERROR HY000: Table 't1' was locked with a READ lock and can't be updated
unlock tables;
Now let us also lock table explicitly and drop it.
lock tables t1 write, v_bug5719 write;
drop table t1;

sic: left LOCK TABLES mode

select * from t3;
a
select * from v_bug5719;
ERROR HY000: View 'test.v_bug5719' references invalid table(s) or column(s) or function(s) or definer/invoker of view lack rights to use them
unlock tables;
drop view v_bug5719;

When limitation to use temporary tables in views is removed, please
add a test that shows what happens under LOCK TABLES when a view
references a temporary table, is locked, and the underlying table
is dropped.

create view v_bug5719 as select * from t2;
ERROR HY000: View's SELECT refers to a temporary table 't2'

Cleanup.

drop table t2, t3;
#
# Bug#39843 DELETE requires write access to table in subquery in where clause
#
DROP TABLE IF EXISTS t1,t2;
CREATE TABLE t1 (
table1_rowid SMALLINT NOT NULL
);
CREATE TABLE t2 (
table2_rowid SMALLINT NOT NULL
);
INSERT INTO t1 VALUES (1);
INSERT INTO t2 VALUES (1);
LOCK TABLES t1 WRITE, t2 READ;
# Sub-select should not try to aquire a write lock.
DELETE FROM t1 
WHERE EXISTS 
( 
SELECT 'x' 
FROM t2
WHERE t1.table1_rowid = t2.table2_rowid
) ;
# While implementing the patch we didn't break old behavior;
# The following sub-select should still requires a write lock:
SELECT * FROM t1 WHERE 1 IN (SELECT * FROM t2 FOR UPDATE);
ERROR HY000: Table 't2' was locked with a READ lock and can't be updated
UNLOCK TABLES;
DROP TABLE t1,t2;
End of 5.1 tests.
#
# Ensure that FLUSH TABLES doesn't substitute a base locked table
# with a temporary one.
#
drop table if exists t1, t2;
create table t1 (a int);
create table t2 (a int);
lock table t1 write, t2 write;
create temporary table t1 (a int);
flush table t1;
drop temporary table t1;
select * from t1;
a
unlock tables;
drop table t1, t2;
#
# Ensure that REPAIR .. USE_FRM works under LOCK TABLES.
#
drop table if exists t1, t2;
create table t1 (a int);
create table t2 (a int);
lock table t1 write, t2 write;
repair table t1 use_frm;
Table	Op	Msg_type	Msg_text
test.t1	repair	status	OK
repair table t1 use_frm;
Table	Op	Msg_type	Msg_text
test.t1	repair	status	OK
select * from t1;
a
select * from t2;
a
repair table t2 use_frm;
Table	Op	Msg_type	Msg_text
test.t2	repair	status	OK
repair table t2 use_frm;
Table	Op	Msg_type	Msg_text
test.t2	repair	status	OK
select * from t1;
a
unlock tables;
drop table t1, t2;
#
# Ensure that mi_copy_status is called for two instances
# of the same table when it is reopened after a flush.
# 
drop table if exists t1;
drop view if exists v1;
create table t1 (c1 int);
create view v1 as select * from t1;
lock tables t1 write, v1 write;
flush table t1;
insert into t1 values (33);
flush table t1;
select * from t1;
c1
33
unlock tables;
drop table t1;
drop view v1;
#
# WL#4284: Transactional DDL locking
#
drop table if exists t1;
create table t1 (a int);
connect con1,localhost,root,,;
set autocommit= 0;
insert into t1 values (1);
lock table t1 write;
# Ensure that metadata locks will be released if there is an open
# transaction (autocommit=off) in conjunction with lock tables.
disconnect con1;
connection default;
drop table t1;
# Same problem but now for BEGIN
drop table if exists t1;
create table t1 (a int);
connect con1,localhost,root,,;
begin;
insert into t1 values (1);
# Ensure that metadata locks held by the transaction are released.
disconnect con1;
connection default;
drop table t1;
#
# Coverage for situations when we try to execute DDL on tables
# which are locked by LOCK TABLES only implicitly.
#
drop tables if exists t1, t2;
drop view if exists v1;
drop function if exists f1;
create table t1 (i int);
create table t2 (j int);
#
# Try to perform DDL on table which is locked through view.
create view v1 as select * from t2;
lock tables t1 write, v1 write;
flush table t2;
ERROR HY000: Table 't2' was locked with a READ lock and can't be updated
drop table t2;
ERROR HY000: Table 't2' was locked with a READ lock and can't be updated
alter table t2 add column k int;
ERROR HY000: Table 't2' was locked with a READ lock and can't be updated
create trigger t2_bi before insert on t2 for each row set @a:=1;
ERROR HY000: Table 't2' was locked with a READ lock and can't be updated
# Repair produces error as part of its result set.
repair table t2;
Table	Op	Msg_type	Msg_text
test.t2	repair	Error	Table 't2' was locked with a READ lock and can't be updated
test.t2	repair	status	Operation failed
unlock tables;
drop view v1;
#
# Now, try  DDL on table which is locked through routine.
create function f1 () returns int
begin
insert into t2 values (1);
return 0;
end|
create view v1 as select f1() from t1;
lock tables v1 read;
flush table t2;
ERROR HY000: Table 't2' was locked with a READ lock and can't be updated
drop table t2;
ERROR HY000: Table 't2' was locked with a READ lock and can't be updated
alter table t2 add column k int;
ERROR HY000: Table 't2' was locked with a READ lock and can't be updated
create trigger t2_bi before insert on t2 for each row set @a:=1;
ERROR HY000: Table 't2' was locked with a READ lock and can't be updated
# Repair produces error as part of its result set.
repair table t2;
Table	Op	Msg_type	Msg_text
test.t2	repair	Error	Table 't2' was locked with a READ lock and can't be updated
test.t2	repair	status	Operation failed
unlock tables;
drop view v1;
drop function f1;
#
# Finally, try DDL on table which is locked thanks to trigger.
create trigger t1_ai after insert on t1 for each row insert into t2 values (1);
lock tables t1 write;
flush table t2;
ERROR HY000: Table 't2' was locked with a READ lock and can't be updated
drop table t2;
ERROR HY000: Table 't2' was locked with a READ lock and can't be updated
alter table t2 add column k int;
ERROR HY000: Table 't2' was locked with a READ lock and can't be updated
create trigger t2_bi before insert on t2 for each row set @a:=1;
ERROR HY000: Table 't2' was locked with a READ lock and can't be updated
# Repair produces error as part of its result set.
repair table t2;
Table	Op	Msg_type	Msg_text
test.t2	repair	Error	Table 't2' was locked with a READ lock and can't be updated
test.t2	repair	status	Operation failed
unlock tables;
drop trigger t1_ai;
drop tables t1, t2;
#
# Bug#45035 " Altering table under LOCK TABLES results in 
# "Error 1213 Deadlock found..."
#
# When reopening tables under LOCK TABLES after ALTER TABLE,
# 6.0 used to be taking thr_lock locks one by one, and
# that would lead to a lock conflict. 
# Check that taking all locks at once works.
#
drop table if exists t1;
create table t1 (i int);
lock tables t1 write, t1 as a read, t1 as b read;
alter table t1 add column j int;
unlock tables;
drop table t1;
create temporary table t1 (i int);
lock tables t1 write, t1 as a read, t1 as b read;
alter table t1 add column j int;
unlock tables;
drop table t1;
#
# Separate case for partitioned tables is important
# because each partition has an own thr_lock object.
#
create table t1 (i int) partition by list (i)
(partition p0 values in (1),
partition p1 values in (2,3),
partition p2 values in (4,5));
lock tables t1 write, t1 as a read, t1 as b read;
alter table t1 add column j int;
unlock tables;
drop table t1;
#
# Bug #43272 HANDLER SQL command does not work under LOCK TABLES
#
DROP TABLE IF EXISTS t1;
CREATE TABLE t1 (a INT);
LOCK TABLE t1 WRITE;
# HANDLER commands are not allowed in LOCK TABLES mode
HANDLER t1 OPEN;
ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction
HANDLER t1 READ FIRST;
Got one of the listed errors
HANDLER t1 CLOSE;
ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction
UNLOCK TABLES;
DROP TABLE t1;
#
# Bug#45066 FLUSH TABLES WITH READ LOCK deadlocks against 
#           LOCK TABLE 
#
DROP TABLE IF EXISTS t1;
CREATE TABLE t1(a INT);
LOCK TABLE t1 READ;
FLUSH TABLES;
ERROR HY000: Table 't1' was locked with a READ lock and can't be updated
LOCK TABLE t1 WRITE;
FLUSH TABLES;
#
# If you allow the next combination, you reintroduce bug Bug#45066
# 
LOCK TABLE t1 READ;
FLUSH TABLES WITH READ LOCK;
ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction
LOCK TABLE t1 WRITE;
FLUSH TABLES WITH READ LOCK;
ERROR HY000: Can't execute the given command because you have active locked tables or an active transaction
UNLOCK TABLES;
DROP TABLE t1;
#
# Simplified test for bug #48538 "Assertion in thr_lock() on LOAD DATA
# CONCURRENT INFILE".
#
DROP TABLE IF EXISTS t1;
CREATE TABLE t1 (f1 INT, f2 INT) ENGINE = MEMORY;
CREATE TRIGGER t1_ai AFTER INSERT ON t1 FOR EACH ROW 
UPDATE LOW_PRIORITY t1 SET f2 = 7;
# Statement below should fail with ER_CANT_UPDATE_USED_TABLE_IN_SF_OR_TRG
# error instead of failing on assertion in table-level locking subsystem.
INSERT INTO t1(f1) VALUES(0);
ERROR HY000: Can't update table 't1' in stored function/trigger because it is already used by statement which invoked this stored function/trigger
DROP TABLE t1;
#
# Bug#43685 Lock table affects other non-related tables
#
DROP TABLE IF EXISTS t1, t2;
connect  con2, localhost, root;
CREATE TABLE t1 (id INT);
CREATE TABLE t2 (id INT);
connection default;
LOCK TABLE t1 WRITE;
ANALYZE TABLE t1;
Table	Op	Msg_type	Msg_text
test.t1	analyze	status	Table is already up to date
connection con2;
LOCK TABLE t2 WRITE;
# This used to hang until the first connection
# unlocked t1.
FLUSH TABLE t2;
UNLOCK TABLES;
connection default;
UNLOCK TABLES;
DROP TABLE t1, t2;
disconnect con2;
#
# End of 6.0 tests.
#
create table t1 (a int) engine=myisam;
lock tables t1 write concurrent, t1 as t2 read;
connect  con1,localhost,root,,;
connection con1;
lock tables t1 read local;
unlock tables;
connection default;
unlock tables;
connection con1;
lock tables t1 read local;
connection default;
lock tables t1 write concurrent, t1 as t2 read;
unlock tables;
connection con1;
unlock tables;
disconnect con1;
connection default;
drop table t1;
# 
# MDEV-15769: Assertion `!is_set() || (m_status == DA_OK_BULK && is_bulk_op())' failed in Diagnostics_area::set_ok_status
# 
CREATE TABLE t1 (a INT);
CREATE TABLE t2 (b INT);
LOCK TABLE t1 READ;
connect  con1,localhost,root,,test;
LOCK TABLE t2 WRITE;
SET lock_wait_timeout= 1;
FLUSH TABLES;
ERROR HY000: Lock wait timeout exceeded; try restarting transaction
UNLOCK TABLES;
disconnect con1;
connection default;
UNLOCK TABLES;
DROP TABLE t1, t2;