include/master-slave.inc
Warnings:
Note	####	Sending passwords in plain text without SSL/TLS is extremely insecure.
Note	####	Storing MySQL user name or password information in the master info repository is not secure and is therefore not recommended. Please consider using the USER and PASSWORD connection options for START SLAVE; see the 'START SLAVE Syntax' in the MySQL Manual for more information.
[connection master]
CREATE TABLE t1(a INT);
DROP TABLE t1;
connection slave
include/sync_slave_sql_with_master.inc
SET @start_max_connections= @@global.max_connections;
SET @start_init_slave= @@global.init_slave;
SET NAMES utf8;
SET @@global.init_slave = 'SET @@global.max_connections = @@global.max_connections + 1 -- комментарий';
DROP TABLE IF EXISTS t1;
CREATE TEMPORARY TABLE t1 AS SELECT @@global.init_slave AS my_column;
DESCRIBE t1;
Field	Type	Null	Key	Default	Extra
my_column	varchar(74)	YES		NULL	
select length(my_column) from t1;
length(my_column)
85
DROP TABLE t1;
SELECT @@global.init_slave = 'SET @@global.max_connections = @@global.max_connections + 1 -- комментарий';
@@global.init_slave = 'SET @@global.max_connections = @@global.max_connections + 1 -- комментарий'
1
Expect 1
include/assert.inc [@@global.max_connections = @start_max_connections]
include/restart_slave.inc
include/assert.inc [@@global.max_connections = @start_max_connections + 1]
SET @@global.init_slave = "SET @a=5";
include/restart_slave.inc
SHOW VARIABLES LIKE 'init_slave';
Variable_name	Value
init_slave	SET @a=5
SELECT @a;
@a
NULL
Expect NULL
SET @@global.max_connections= @start_max_connections;
SET @@global.init_slave= @start_init_slave;
include/rpl_end.inc
