pkolaczk commented on code in PR #2556:
URL: https://github.com/apache/cassandra/pull/2556#discussion_r1370129124
##########
src/java/org/apache/cassandra/cql3/restrictions/ClusteringColumnRestrictions.java:
##########
@@ -92,61 +92,46 @@ public ClusteringColumnRestrictions mergeWith(Restriction
restriction, @Nullable
return new ClusteringColumnRestrictions(this.comparator,
newRestrictionSet, allowFiltering);
}
- private boolean hasMultiColumnSlice()
- {
- for (SingleRestriction restriction : restrictions)
- {
- if (restriction.isMultiColumn() && restriction.isSlice())
- return true;
- }
- return false;
- }
-
public NavigableSet<Clustering<?>> valuesAsClustering(QueryOptions
options, ClientState state) throws InvalidRequestException
{
- MultiCBuilder builder = MultiCBuilder.create(comparator, hasIN());
+ MultiCBuilder builder = MultiCBuilder.create(comparator);
for (SingleRestriction r : restrictions)
{
r.appendTo(builder, options);
if (hasIN() && Guardrails.inSelectCartesianProduct.enabled(state))
Review Comment:
`NOT IN` creates slice restrictions not `IN` resrictions. Slice restrictions
on different columns cannot be combined with a cartesian multiplication. There
is only one slice restriction allowed, and the slice restriction must be
present on the last restricted clustering column.
I.e you cannot do this:
`SELECT * FROM x WHERE clustering_col_1 NOT IN (...) AND clustering_column_2
NOT IN (...)`
`NOT IN` behaves a lot more like `<, > etc` in this regard.
However, now I noticed that `IN` can be combined with one `NOT IN`, so `NOT
IN` could blow up the build size here because `NOT IN` can specify multiple
values. I think it is an omission then and we need to include `NOT IN` in
thecheck.
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