Unexpected values appeared in select query statements that should logically imply each other

create table table_3_utf8_undef (

`pk` int primary key,

`col_bigint_undef_signed` bigint  ,

`col_bigint_undef_unsigned` bigint unsigned ,

`col_bigint_key_signed` bigint  ,

`col_bigint_key_unsigned` bigint unsigned ,

`col_float_undef_signed` float  ,

`col_float_undef_unsigned` float unsigned ,

`col_float_key_signed` float  ,

`col_float_key_unsigned` float unsigned ,

`col_double_undef_signed` double  ,

`col_double_undef_unsigned` double unsigned ,

`col_double_key_signed` double  ,

`col_double_key_unsigned` double unsigned ,

`col_decimal(40, 20)_undef_signed` decimal(40, 20)  ,

`col_decimal(40, 20)_undef_unsigned` decimal(40, 20) unsigned ,

`col_decimal(40, 20)_key_signed` decimal(40, 20)  ,

`col_decimal(40, 20)_key_unsigned` decimal(40, 20) unsigned ,

`col_char(20)_undef_signed` char(20)  ,

`col_char(20)_key_signed` char(20)  ,

`col_varchar(20)_undef_signed` varchar(20)  ,

`col_varchar(20)_key_signed` varchar(20)  ,

key (`col_bigint_key_signed`),

key (`col_bigint_key_unsigned`),

key (`col_float_key_signed`),

key (`col_float_key_unsigned`),

key (`col_double_key_signed`),

key (`col_double_key_unsigned`),

key (`col_decimal(40, 20)_key_signed`),

key (`col_decimal(40, 20)_key_unsigned`),

key (`col_char(20)_key_signed`),

key (`col_varchar(20)_key_signed`)

) character set utf8 ;

insert into table_3_utf8_undef values (0,82.1847,1,39.0425,38.1089,-1,1,94.1106,1.009,12.991,19755,-13064,0,1,79.1429,-2,1,"well",'3

','-0','e'),(1,1,20.0078,-9.183,68.1957,1,2,1,0.0001,12.991,2,71.0510,1,-1,2,12.991,12.991,'3	','1','3	','-0'),(2,-2,1,-21247,1.009,2,1.009,0.0001,36.0002,-2,2,-0,0.0001,-2,0.1598,47.1515,1.009,'3	','w','-1','e');

create table table_7_utf8_undef (

`pk` int primary key,

`col_bigint_undef_signed` bigint  ,

`col_bigint_undef_unsigned` bigint unsigned ,

`col_bigint_key_signed` bigint  ,

`col_bigint_key_unsigned` bigint unsigned ,

`col_float_undef_signed` float  ,

`col_float_undef_unsigned` float unsigned ,

`col_float_key_signed` float  ,

`col_float_key_unsigned` float unsigned ,

`col_double_undef_signed` double  ,

`col_double_undef_unsigned` double unsigned ,

`col_double_key_signed` double  ,

`col_double_key_unsigned` double unsigned ,

`col_decimal(40, 20)_undef_signed` decimal(40, 20)  ,

`col_decimal(40, 20)_undef_unsigned` decimal(40, 20) unsigned ,

`col_decimal(40, 20)_key_signed` decimal(40, 20)  ,

`col_decimal(40, 20)_key_unsigned` decimal(40, 20) unsigned ,

`col_char(20)_undef_signed` char(20)  ,

`col_char(20)_key_signed` char(20)  ,

`col_varchar(20)_undef_signed` varchar(20)  ,

`col_varchar(20)_key_signed` varchar(20)  ,

key (`col_bigint_key_signed`),

key (`col_bigint_key_unsigned`),

key (`col_float_key_signed`),

key (`col_float_key_unsigned`),

key (`col_double_key_signed`),

key (`col_double_key_unsigned`),

key (`col_decimal(40, 20)_key_signed`),

key (`col_decimal(40, 20)_key_unsigned`),

key (`col_char(20)_key_signed`),

key (`col_varchar(20)_key_signed`)

) character set utf8 ;

insert into table_7_utf8_undef values (0,-9.183,1,1.1384,2,15.1271,12.991,-2,0.0001,36.1270,79.1819,0.0001,0.0001,3.1387,52.0818,-0,0.0001,'1','3	','0','0'),(1,79,12.991,107,2,-0.0001,0,1.009,1.009,34,1,-1,69.0208,1,2,120,12.991,'3	','-1',"if",'b'),(2,-2,1,-9.183,1,12.991,0.0001,53,12.991,1.009,12.991,12.991,0.0001,-0.0001,12.991,0.0001,2,'3

','p','0','3	'),(3,-0.0001,12.991,1.009,1.009,-9.183,2,0,1,-2,1,2,1,2,1.009,2,12.991,'3

','0','k','0'),(4,1.009,0.0001,-1,12.991,2,47,2,0,12.991,12.991,1.009,0,1.009,1.009,-0.0001,6949,'-1','	3','1','m'),(5,-0,1,0,0,0.0001,28.1237,12.991,0,12.991,12.991,-0,12.991,2,2,2,1.009,'0','	3','0','	3'),(6,45.0855,1,38.1166,1,1.009,80.0284,2,122,0.0001,0,-1,11130,0,1,1,0,"know",'-0','

3','3

');

(SELECT DISTINCT (BINARY _UTF8MB4'can''t'+`f15`*-`f15`) AS `f1` FROM (SELECT `col_varchar(20)_key_signed` AS `f16`,`col_bigint_undef_signed` AS `f14`,`col_varchar(20)_key_signed` 

AS `f17` FROM `table_7_utf8_undef`) AS `t4` NATURAL JOIN (SELECT 

(`f20` DIV _UTF8MB4'l') AS `f13`,

(`f19`-`f21`%`f20`) AS `f18`,(DATE_ADD(_UTF8MB4'2006-06-01', INTERVAL 1 MINUTE)) AS `f15` FROM (SELECT `col_float_key_unsigned` AS `f19`,`col_decimal(40, 20)_key_unsigned` AS `f20`,`col_bigint_key_signed` AS `f21` FROM `table_7_utf8_undef` USE INDEX (`col_char(20)_key_signed`, `col_char(20)_key_signed`)) AS `t5`) AS `t6`);

+------------------------------+

| f1                           |

+------------------------------+

| -402427712485213100000000000 |

+------------------------------+

(SELECT DISTINCT (BINARY _UTF8MB4'can''t'+`f15`*-`f15`) AS `f1` FROM (SELECT `col_varchar(20)_key_signed` AS `f16`,`col_bigint_undef_signed` AS `f14`,`col_varchar(20)_key_signed` 

AS `f17` FROM `table_7_utf8_undef`) AS `t4` NATURAL JOIN (SELECT 

DISTINCT (`f20` DIV _UTF8MB4'l') AS `f13`,

(`f19`-`f21`%`f20`) AS `f18`,(DATE_ADD(_UTF8MB4'2006-06-01', INTERVAL 1 MINUTE)) AS `f15` FROM (SELECT `col_float_key_unsigned` AS `f19`,`col_decimal(40, 20)_key_unsigned` AS `f20`,`col_bigint_key_signed` AS `f21` FROM `table_7_utf8_undef` USE INDEX (`col_char(20)_key_signed`, `col_char(20)_key_signed`)) AS `t5`) AS `t6`);

+----------+

| f1       |

+----------+

| -4024036 |

+----------+