create table t1 (a varchar(50));
reset master;
SET TIMESTAMP=10000;
SET @`a b`='hello';
INSERT INTO t1 VALUES(@`a b`);
set @var1= "';aaa";
SET @var2=char(ascii('a'));
insert into t1 values (@var1),(@var2);
show binlog events from 79;
Log_name	Pos	Event_type	Server_id	Orig_log_pos	Info
master-bin.000001	79	User var	1	79	@`a b`=_latin1 0x68656C6C6F COLLATE latin1_swedish_ci
master-bin.000001	120	Query	1	120	use `test`; INSERT INTO t1 VALUES(@`a b`)
master-bin.000001	184	User var	1	184	@`var1`=_latin1 0x273B616161 COLLATE latin1_swedish_ci
master-bin.000001	226	User var	1	226	@`var2`=_latin1 0x61 COLLATE latin1_swedish_ci
master-bin.000001	264	Query	1	264	use `test`; insert into t1 values (@var1),(@var2)
/*!40019 SET @@session.max_insert_delayed_threads=0*/;
SET @`a b`:=_latin1 0x68656C6C6F COLLATE `latin1_swedish_ci`;
use test;
SET TIMESTAMP=10000;
INSERT INTO t1 VALUES(@`a b`);
SET @`var1`:=_latin1 0x273B616161 COLLATE `latin1_swedish_ci`;
SET @`var2`:=_latin1 0x61 COLLATE `latin1_swedish_ci`;
SET TIMESTAMP=10000;
insert into t1 values (@var1),(@var2);
drop table t1;