dcapwell commented on PR #2310:
URL: https://github.com/apache/cassandra/pull/2310#issuecomment-1572560326
> ... this fails the same way mine did when you try to compare to a bind
variable
>
> ```
> @Test
> public void selectFloatVectorFunctions()
> {
> createTable(KEYSPACE, "CREATE TABLE %s (pk int primary key, value
vector<float, 2>)");
>
> execute("INSERT INTO %s (pk, value) VALUES (0, ?)", vector(1f,
2f));
> execute("SELECT similarity_cosine(value, ?) FROM %s WHERe pk=0",
vector(1f, 2f));
> }
> ```
>
> ```
> org.apache.cassandra.exceptions.InvalidRequestException: Cannot infer type
of argument ? in call to function system.similarity_cosine(any, any): use type
casts to disambiguate
> ```
>
> commit on top of your branch at
https://github.com/jbellis/cassandra/tree/dc-vector
I think that's also the behavior for all functions that have multiple type
signatures... we don't know which one due to bind type not being known... so
the error I think is correct, you need `(vector<float, 2>) ?`. A float vector
of size 2 is different than the float vector of size 4 from a type point of
view, so we need that information in order to resolve functions...
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