drop table if exists t1,t3,t4,t5;
drop database if exists test_test;
SET SESSION STORAGE_ENGINE = MyISAM;
drop table if exists t1,t3,t4,t5;
create table t1 (a int, b char(10), key a using btree (a), key b using btree (a,b));
insert into t1 values
(17,"ddd"),(18,"eee"),(19,"fff"),(19,"yyy"),
(14,"aaa"),(16,"ccc"),(16,"xxx"),
(20,"ggg"),(21,"hhh"),(22,"iii"),(23,"xxx"),(24,"xxx"),(25,"xxx");
handler t1 open;
handler t1 read a=(SELECT 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 'SELECT 1)' at line 1
handler t1 read a=(1) FIRST;
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 'FIRST' at line 1
handler t1 read a=(1) NEXT;
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 'NEXT' at line 1
handler t1 read last;
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 '' at line 1
handler t1 close;
drop table t1;
CREATE TABLE t1(a INT, PRIMARY KEY(a));
insert into t1 values(1),(2);
handler t1 open;
handler t1 read primary=(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 'primary=(1)' at line 1
handler t1 read `primary`=(1);
a
1
handler t1 close;
drop table t1;
create database test_test;
use test_test;
create table t1(table_id char(20), primary key  (table_id));
insert into t1 values ('test_test.t1');
insert into t1 values ('');
handler t1 open;
handler t1 read first limit 9;
table_id
test_test.t1

create table t2(table_id char(20), primary key  (table_id));
insert into t2 values ('test_test.t2');
insert into t2 values ('');
handler t2 open;
handler t2 read first limit 9;
table_id
test_test.t2

use test;
create table t1(table_id char(20), primary key  (table_id));
insert into t1 values ('test.t1');
insert into t1 values ('');
handler t1 open;
ERROR 42000: Not unique table/alias: 't1'
use test;
handler test.t1 read first limit 9;
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 'read first limit 9' at line 1
handler test_test.t1 read first limit 9;
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 'read first limit 9' at line 1
handler t1 read first limit 9;
table_id
test_test.t1

handler test_test.t2 read first limit 9;
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 'read first limit 9' at line 1
handler t2 read first limit 9;
table_id
test_test.t2

handler test_test.t1 close;
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 'close' at line 1
handler t1 close;
drop table test_test.t1;
handler test_test.t2 close;
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 'close' at line 1
handler t2 close;
drop table test_test.t2;
drop database test_test;
use test;
handler test.t1 close;
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 'close' at line 1
handler t1 close;
ERROR 42S02: Unknown table 't1' in HANDLER
drop table test.t1;
create database test_test;
use test_test;
create table t1 (c1 char(20));
insert into t1 values ('test_test.t1');
create table t3 (c1 char(20));
insert into t3 values ('test_test.t3');
handler t1 open;
handler t1 read first limit 9;
c1
test_test.t1
handler t1 open h1;
handler h1 read first limit 9;
c1
test_test.t1
use test;
create table t1 (c1 char(20));
create table t2 (c1 char(20));
create table t3 (c1 char(20));
insert into t1 values ('t1');
insert into t2 values ('t2');
insert into t3 values ('t3');
handler t1 open;
ERROR 42000: Not unique table/alias: 't1'
handler t2 open t1;
ERROR 42000: Not unique table/alias: 't1'
handler t3 open t1;
ERROR 42000: Not unique table/alias: 't1'
handler t1 read first limit 9;
c1
test_test.t1
handler test.t1 close;
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 'close' at line 1
handler test.t1 open h1;
ERROR 42000: Not unique table/alias: 'h1'
handler test_test.t1 open h1;
ERROR 42000: Not unique table/alias: 'h1'
handler test_test.t3 open h3;
handler test.t1 open h2;
handler t1 read first limit 9;
c1
test_test.t1
handler h1 read first limit 9;
c1
test_test.t1
handler h2 read first limit 9;
c1
t1
handler h3 read first limit 9;
c1
test_test.t3
handler h2 read first limit 9;
c1
t1
handler test.h1 close;
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 'close' at line 1
handler t1 close;
handler h1 close;
handler h2 close;
handler t1 read first limit 9;
ERROR 42S02: Unknown table 't1' in HANDLER
handler h1 read first limit 9;
ERROR 42S02: Unknown table 'h1' in HANDLER
handler h2 read first limit 9;
ERROR 42S02: Unknown table 'h2' in HANDLER
handler h3 read first limit 9;
c1
test_test.t3
handler h3 read first limit 9;
c1
test_test.t3
use test_test;
handler h3 read first limit 9;
c1
test_test.t3
handler test.h3 read first limit 9;
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 'read first limit 9' at line 1
handler h3 close;
use test;
drop table t3;
drop table t2;
drop table t1;
drop database test_test;
create table t1 (c1 int);
create table t2 (c1 int);
insert into t1 values (1);
insert into t2 values (2);
connection: default
handler t1 open;
handler t1 read first;
c1
1
connection: flush
flush tables;
connection: waiter 
connection: default
handler t2 open;
handler t2 read first;
c1
2
handler t1 read next;
c1
1
handler t1 close;
handler t2 close;
drop table t1,t2;
drop table if exists t1, t0;
create table t1 (c1 int);
connection: default
handler t1 open;
handler t1 read first;
c1
connection: flush
rename table t1 to t0;
connection: waiter 
connection: default
#
# RENAME placed two pending locks and waits.
# When HANDLER t0 OPEN does open_tables(), it calls
# mysql_ha_flush(), which in turn closes the open HANDLER for t1.
# RENAME TABLE gets unblocked. If it gets scheduled quickly
# and manages to complete before open_tables()
# of HANDLER t0 OPEN, open_tables() and therefore the whole
# HANDLER t0 OPEN succeeds. Otherwise open_tables() 
# notices a pending or active exclusive metadata lock on t2
# and the whole HANDLER t0 OPEN fails with ER_LOCK_DEADLOCK
# error.
#
handler t0 open;
handler t0 close;
connection: flush
handler t1 read next;
ERROR 42S02: Unknown table 't1' in HANDLER
handler t1 close;
ERROR 42S02: Unknown table 't1' in HANDLER
drop table t0;
create table t1 (a int);
handler t1 open as t1_alias;
drop table t1;
create table t1 (a int);
handler t1 open as t1_alias;
flush tables;
drop table t1;
create table t1 (a int);
handler t1 open as t1_alias;
handler t1_alias close;
drop table t1;
create table t1 (a int);
handler t1 open as t1_alias;
handler t1_alias read first;
a
drop table t1;
handler t1_alias read next;
ERROR 42S02: Unknown table 't1_alias' in HANDLER
create table t1 (a int, b char(1), key a (a), key b (a,b));
insert into t1 values (0,"a"),(1,"b"),(2,"c"),(3,"d"),(4,"e"),
(5,"f"),(6,"g"),(7,"h"),(8,"i"),(9,"j");
handler t1 open;
handler t1 read a first;
a	b
0	a
handler t1 read a next;
a	b
1	b
flush tables;
handler t1 read a next;
a	b
0	a
handler t1 read a next;
a	b
1	b
flush tables with read lock;
handler t1 read a next;
a	b
0	a
unlock tables;
drop table t1;
handler t1 read a next;
ERROR 42S02: Unknown table 't1' in HANDLER
drop table if exists t1;
# First test case which is supposed trigger the execution
# path on which problem was discovered.
create table t1 (a int not null);
insert into t1 values (1);
handler t1 open;
lock table t1 write;
alter table t1 engine=csv;
handler t1 read a next;
ERROR HY000: Storage engine CSV of the table `test`.`t1` doesn't have this option
handler t1 close;
unlock tables;
drop table t1;
# Now test case which was reported originally but which no longer
# triggers execution path which has caused the problem.
create table t1 (a int not null);
insert into t1 values (1);
handler t1 open;
alter table t1 engine=csv;
# Since S metadata lock was already acquired at HANDLER OPEN time
# and TL_READ lock requested by HANDLER READ is compatible with
# ALTER's TL_WRITE_ALLOW_READ the below statement should succeed
# without waiting. The old version of table should be used in it.
handler t1 read next;
a
1
handler t1 close;
drop table t1;
USE information_schema;
HANDLER COLUMNS OPEN;
ERROR HY000: Incorrect usage of HANDLER OPEN and information_schema
USE test;
PREPARE h_r FROM 'HANDLER t1 READ `PRIMARY` LAST';
ERROR 42S02: Unknown table 't1' in HANDLER
create view v as select 1;
create temporary table v as select 2;
handler v open;
prepare stmt from 'create table if not exists v as select 3';
execute stmt;
Warnings:
Note	1050	Table 'v' already exists
handler v read next;
ERROR 42S02: Unknown table 'v' in HANDLER
drop view v;