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https://issues.apache.org/jira/browse/CASSANDRA-18068?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17682967#comment-17682967
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Andres de la Peña commented on CASSANDRA-18068:
-----------------------------------------------
The patch uses this syntax to remove the mask of a column:
{code:java}
ALTER TABLE table_name ALTER column_name WITHOUT MASK;
{code}
That's the syntax that is described [in the
CEP|https://cwiki.apache.org/confluence/display/CASSANDRA/CEP-20%3A+Dynamic+Data+Masking#CEP20:DynamicDataMasking-Maskedtablecolumns].
However, I wonder if we could use this alternative syntax::
{code:java}
ALTER TABLE table_name ALTER column_name DROP MASKED;
{code}
That would save us the introduction of two new keywords ({{{}WITHOUT{}}} and
{{{}MASK{}}}). What do you think?
> Allow to attach native masking functions to table columns
> ---------------------------------------------------------
>
> Key: CASSANDRA-18068
> URL: https://issues.apache.org/jira/browse/CASSANDRA-18068
> Project: Cassandra
> Issue Type: New Feature
> Components: Feature/Dynamic Data Masking
> Reporter: Andres de la Peña
> Assignee: Andres de la Peña
> Priority: Normal
> Time Spent: 10m
> Remaining Estimate: 0h
>
> Allow to attach the native masking functions added by CASSANDRA-17941 to
> table columns, as defined by
> [CEP-20|https://cwiki.apache.org/confluence/display/CASSANDRA/CEP-20%3A+Dynamic+Data+Masking].
>
> {{CREATE TABLE}} statements would look like:
> {code}
> > CREATE TABLE patients (
> id timeuuid PRIMARY KEY,
> name text MASKED WITH partial(2, 1),
> birth date MASKED WITH default()
> );
> > INSERT INTO patients(id, name, birth) VALUES (now(), 'alice', '1982-12-21);
>
> > SELECT name, birth FROM patients;
>
> name | birth
> ---------+------------
> alXXXXe | 1900-01-01
> {code}
> {{ALTER TABLE}} statements would look like:
> {code}
> > ALTER TABLE patients ALTER name MASKED WITH partial(2, 1);
> > ALTER TABLE patients ALTER name WITHOUT MASK;
> {code}
> It won't be possible to use masked columns in the WHERE and IF clauses of
> SELECT and UPDATE statements.
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