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  1. esmedia

    excluding rows

    sorry - it should read: ... 2) already answered by a certain user
  2. esmedia

    excluding rows

    hi all, i came up with this problem: i have 3 tables: create table questions (id ...); create table users (id ...); create table answers (question_id ..., user_id ...); answers contains all users' answers given to the questions (questions can be answered more than once by different users). i...

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