Row-level Security Error

[jtyow]

I followed the documentation on row-level security but running the following DDL statements grants access to both column_value_1 and column_value_2 to user_1. this shouldn't happen. what am I doing wrong?

CREATE ROW ACCESS POLICY policy_1

ON `project.dataset.table_1`

GRANT TO ('user:user_1@google.com')

FILTER USING (column IN ('column_value_1'));

CREATE ROW ACCESS POLICY policy_2

ON `project.dataset.table_1`

GRANT TO ('user:user_2@google.com')

FILTER USING (column IN ('column_value_2'));