Jan Ciolek f9b1fc0b69 cql: Forbid null in lists of IN values ...

We used to allow nulls in lists of IN values,
i.e. a query like this would be valid:
SELECT * FROM tab WHERE pk IN (1, null, 2);

This is an old feature that isn't really used
and is already forbidden in Cassandra.

Additionally the current implementation
doesn't allow for nulls inside the list
if it's sent as a bound value.
So something like:
SELECT * FROM tab WHERE pk IN ?;
would throw an error if ? was (1, null, 2).
This is inconsistent.

Allowing it made writing code cumbersome because
this was the only case where having a null
inside of a collection was allowed.
Because of it there needed to be
separate code paths to handle regular lists
and lists of NULL values.

Forbidding it makes the code nicer and consistent
at the cost of a feature that isn't really
important.

Signed-off-by: Jan Ciolek <jan.ciolek@scylladb.com>

2022-05-24 00:17:41 +02:00

..

expression.cc

cql: Forbid null in lists of IN values

2022-05-24 00:17:41 +02:00

expression.hh

cql: Forbid null in lists of IN values

2022-05-24 00:17:41 +02:00

prepare_expr.cc

cql: Forbid null in lists of IN values

2022-05-24 00:17:41 +02:00

to_restriction.cc

cql3: expr: expr::to_restriction: Handle token relations

2022-05-16 18:17:58 +02:00