gus_demo : friendship_map : column analysis
columnforeign refsprimary refsminvalmaxvalmedianmeanstand devnonnullsno nullsminsizemaxsizetypedefacto type
befriender_id6876.8000.7485111int(11)int(1)
befriendee_id7998.2000.7485111int(11)int(1)

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