default	data_01917	d1_idx	minmax	d1	1
default	data_01917	d1_null_idx	minmax	assumeNotNull(d1_null)	1
default	data_01917_2	memory	set	frequency * length(name)	5
default	data_01917_2	sample_index1	minmax	length(name), name	4
default	data_01917_2	sample_index2	ngrambf_v1	lower(name), name	4
2
3
d1_idx
d1_null_idx
sample_index1