Posts by Blavk • 13 points

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  Q: How to count the amount of distinct occurrences in a BD and return

  I have 3 tables in a library database. One is the member table, with the age of that member and one PRIMARY KEY. The second table, book, has a PRIMARY KEY isbn and the rest of the attributes authors…

  sql database postgresql query group-by

  asked 3 years, 5 months ago Blavk 13