Function select_by_column_in 

pub fn select_by_column_in(
    entity: &ResolvedEntity,
    column_name: &str,
    values: &[Value],
    schema_override: Option<&str>,
    dialect: &dyn Dialect,
) -> QueryBuf

SELECT * FROM entity WHERE column IN ($1, $2, …) ORDER BY pk. Used for batch-fetching related rows (to_many or to_one by key).