Execution example::

  plugin_register functions/vector
  # [[0, 1337566253.89858, 0.000355720520019531], true]
  logical_count \
    --logical_table Entries \
    --shard_key created_at \
    --columns[vector].stage initial \
    --columns[vector].flags COLUMN_VECTOR \
    --columns[vector].type UInt32 \
    --columns[vector].value 'vector_new(1, 2, 3)' \
    --filter 'vector_size(vector) > 2'
  # [[0, 1337566253.89858, 0.000355720520019531], 5]
