Calculating votes - PHP and MySQL voting system [closed]

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Closed 8 years ago.

how can I create a script to calculate the voting results for each option knowing that sometimes a question can have up to 4 options?

Answer 1

Assuming that your tables are respectively named table1, table2 and table3, one can do:

SELECT   Question_ID, Option_ID, SUM(Vote)
FROM     table1 LEFT JOIN table2 USING (Option_ID)
GROUP BY Question_ID, Option_ID