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9433108158
The CQL protocol and specification call for lists with NULLs in some places. For example, the statement: ```cql UPDATE tab SET x = 3 IF y IN (1, 2, NULL) WHERE pk = 4 ``` has a list `(1, 2, NULL)` that contains NULL. Although the syntax is tuple-like, the value is a list; consider the same statement as a prepared statement: ```cql UPDATE tab SET x = :x IF y IN :y_values WHERE pk = :pk ``` `:y_values` must have a list type, since the number of elements is unknown. Currently, this is done with special paths inside LWT that bypass normal evaluation, but if we want to unify those paths, we must allow NULLs in lists (except in storage). This series does that. Closes #12411 * github.com:scylladb/scylladb: test: materialized view: add test exercising synthetic empty-type columns cql3: expr: relax evaluate_list() to allow allow NULL elements types: allow lists with NULL test: relax NULL check test predicate cql3, types: validate listlike collections (sets, lists) for storage types: make empty type deserialize to non-null value