It seems we don't have a clear convention on how to name CQL native functions.
Most native functions are named all lower case, without underscore nor hyphen to separate words. That's the case, for example, of "intasblob" or "blobasint". We also have some functions using camel case, as in "castAsInt" or "castAsTimestamp". Note that the came cased names require quoting due to CQL's case insensitivity. Differently to CQL native functions, system keyspaces, tables and columns consistently use snake case. For example, we have "system_schema", "dropped_columns", "default_time_to_live". I think it would be good to adopt a convention on how to name CQL native functions, at least the new ones. IMO camel case would make sense because it plays well with CQL's case insensitivity, it makes long names easier to read and it's consistent with the names used for most other things. For example, in CASSANDRA-17811 I'm working on a set of functions to do within-collection operations, which would be named "map_keys", "map_values", "collection_min", "collection_max", "collection_sum", "collection_count", etc. Also, CEP-20 will add a set of functions that would be named "mask_null", "mask_default", "mask_replace", "mask_inner", "mask_outer", "mask_hash", etc. As for the already existing functions, we could either let them be or add snake case aliases for them, so for example we'd have both "castAsInt" and "cast_as_int", at least for a time. What do you think?
