runtime error: index out of range [8] with length 8

[ChenPeng2013]

Bug Report

Please answer these questions before submitting your issue. Thanks!

1. Minimal reproduce step (Required)

use test;
drop table if exists table_30_utf8_4;
drop table if exists t;
create table t(a int);
insert into t values(1);
create table table_30_utf8_4 (
`pk` int primary key,
`col_int_key_unsigned` int unsigned ,
`col_int_key_signed` int,
`col_float_key_signed` float  ,
`col_float_key_unsigned` float unsigned
) character set utf8 
partition by hash(pk)
partitions 4;

insert ignore into table_30_utf8_4 values (0,91, 10, 14,19.0495);
alter table table_30_utf8_4 add column a int as (col_int_key_signed * 2);


SELECT count(1) AS val FROM table_30_utf8_4 WHERE table_30_utf8_4.col_int_key_unsigned!=table_30_utf8_4.a OR (SELECT count(1) AS val FROM t WHERE table_30_utf8_4.col_float_key_signed!=table_30_utf8_4.col_float_key_unsigned )!=7984764426240273913;

2. What did you expect to see? (Required)

mysql> SELECT count(1) AS val FROM table_30_utf8_4 WHERE table_30_utf8_4.col_int_key_unsigned!=table_30_utf8_4.a OR (SELECT count(1) AS val FROM t WHERE table_30_utf8_4.col_float_key_signed!=table_30_utf8_4.col_float_key_unsigned )!=7984764426240273913;
+-----+
| val |
+-----+
|   1 |
+-----+
1 row in set (0.00 sec)

3. What did you see instead (Required)

mysql> SELECT count(1) AS val FROM table_30_utf8_4 WHERE table_30_utf8_4.col_int_key_unsigned!=table_30_utf8_4.a OR (SELECT count(1) AS val FROM t WHERE table_30_utf8_4.col_float_key_signed!=table_30_utf8_4.col_float_key_unsigned )!=7984764426240273913;
ERROR 1105 (HY000): runtime error: index out of range [5] with length 5

4. What is your TiDB version? (Required)

master and release-4.0

[ichn-hu]

/assign @ichn-hu

[wshwsh12]

/assign @wshwsh12

[ichn-hu]

/unassign @ichn-hu

[ichn-hu]

/assign @wjhuang2016

[ti-srebot]

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