[MDEV-34189] Unexpected error on `WHERE inet6col` - Jira

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This script:

CREATE OR REPLACE TABLE t1 (a INET6);

INSERT INTO t1 VALUES ('::'),('::1');

SELECT * FROM t1 WHERE a IS TRUE;

produces the following output:

+------+

| a    |

+------+

| ::1  |

+------+

Looks good so far.

Now if I run:

SELECT * FROM t1 WHERE a;

it returns an unexpected error:

ERROR 4078 (HY000): Illegal parameter data types inet6 and bigint for operation '<>'

The problem is that the condition:

WHERE column

gets rewritten by the parser into:

WHERE column<>0

which is not applicable in case of INET6.

It should probably be rewritten to:

WHERE column IS TRUE

relates to

MDEV-33999 Unexpected result when casting decimal in WHERE clause

MDEV-34114 Incorrect Query Result when Adding Columns

MDEV-34123 CONCAT Function Returns Unexpected Empty Set in Query

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