| Server IP : 88.99.149.37 / Your IP : 216.73.216.141 Web Server : nginx/1.31.2 System : Linux server-88-99-149-37 6.12.0-124.56.5.el10_1.x86_64 #1 SMP PREEMPT_DYNAMIC Fri May 15 06:12:08 EDT 2026 x86_64 User : muralimurth ( 1015) PHP Version : 8.4.23 Disable Function : exec,system,passthru,shell_exec,proc_close,proc_open,dl,popen,show_source,posix_kill,posix_mkfifo,posix_getpwuid,posix_setpgid,posix_setsid,posix_setuid,posix_setgid,posix_seteuid,posix_setegid,posix_uname MySQL : OFF | cURL : ON | WGET : ON | Perl : ON | Python : OFF | Sudo : ON | Pkexec : ON Directory : /usr/local/mysql/mysql-test/main/ |
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drop table if exists t1,t2;
create table t1 (a int not null auto_increment primary key);
insert into t1 values(0);
lock table t1 read;
flush table t1;
ERROR HY000: Table 't1' was locked with a READ lock and can't be updated
unlock tables;
lock table t1 write;
flush table t1;
check table t1;
Table Op Msg_type Msg_text
test.t1 check status OK
unlock tables;
lock table t1 write;
connect locker,localhost,root,,test;
connection locker;
lock table t1 read;
connection default;
flush table t1;
select * from t1;
a
1
unlock tables;
connection locker;
unlock tables;
connection default;
lock table t1 write;
connection locker;
lock table t1 write;
connection default;
flush table t1;
select * from t1;
a
1
unlock tables;
connection locker;
unlock tables;
select * from t1;
a
1
connection default;
drop table t1;
disconnect locker;
create table t1(table_id char(20) primary key);
create table t2(table_id char(20) primary key);
insert into t1 values ('test.t1');
insert into t1 values ('');
insert into t2 values ('test.t2');
insert into t2 values ('');
handler t1 open as a1;
handler t1 open as a2;
handler t2 open;
handler a1 read first limit 9;
table_id
test.t1
handler a2 read first limit 9;
table_id
test.t1
handler t2 read first limit 9;
table_id
test.t2
flush tables;
handler a1 read first limit 9;
table_id
test.t1
handler a2 read first limit 9;
table_id
test.t1
handler t2 read first limit 9;
table_id
test.t2
handler t1 open as a1;
ERROR 42000: Not unique table/alias: 'a1'
handler t1 open as a2;
ERROR 42000: Not unique table/alias: 'a2'
handler t2 open;
ERROR 42000: Not unique table/alias: 't2'
handler a1 read first limit 9;
table_id
test.t1
handler a2 read first limit 9;
table_id
test.t1
handler t2 read first limit 9;
table_id
test.t2
flush table t1;
handler a1 read first limit 9;
table_id
test.t1
handler a2 read first limit 9;
table_id
test.t1
handler t2 read first limit 9;
table_id
test.t2
flush table t2;
handler t2 close;
drop table t1;
drop table t2;
create table t1(table_id char(20) primary key);
insert into t1 values ('Record-01');
insert into t1 values ('Record-02');
insert into t1 values ('Record-03');
insert into t1 values ('Record-04');
insert into t1 values ('Record-05');
handler t1 open;
handler t1 read first limit 1;
table_id
Record-01
handler t1 read next limit 1;
table_id
Record-02
handler t1 read next limit 1;
table_id
Record-03
flush table t1;
handler t1 read next limit 1;
table_id
Record-01
handler t1 read next limit 1;
table_id
Record-02
handler t1 close;
drop table t1;
FLUSH TABLES WITH READ LOCK ;
FLUSH TABLES WITH READ LOCK ;
UNLOCK TABLES;