_analyze_tables_: issue_comments, author_association

This data as json

table column total_rows num_null num_blank num_distinct most_common least_common
issue_comments author_association 30000 0 0 4 
[
    [
        "MEMBER",
        19901
    ],
    [
        "CONTRIBUTOR",
        5080
    ],
    [
        "NONE",
        4539
    ],
    [
        "COLLABORATOR",
        480
    ]
]