_analyze_tables_: _analyze_tables_, num_null

This data as json

table	column	total_rows	num_null	num_blank	num_distinct	most_common	least_common
_analyze_tables_	num_null	350	0	0	53	[[0, 279], [1, 5], [1275, 4], [1120, 4], [560, 2], [431, 2], [14, 2], [13, 2], [10, 2], [8, 2]]	[[1108, 1], [1214, 1], [1229, 1], [1244, 1], [1266, 1], [1278, 1], [1290, 1], [2293, 1], [2872, 1], [9947, 1]]