jason white
jason white

Reputation: 711

MySQL Query ; Finding if two person sharing the same group

Let's say on the MySQL Table, userid=A and userid=B.

userid=A belongs to Group1, Group5, Group6, Group8

userid=B belongs to Group2, Group9, Group5, Group10.

What's MYSQL query statement of finding the two users's common group which is Group5 in this case.

The intersection query

Upvotes: 0

Views: 38

Answers (1)

Hass
Hass

Reputation: 1636

select * from group_table where group_id = id AND (userid = a or userid = b)

if the count is 2 then they're both members of the group.

Upvotes: 2

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