I'm trying to make a survey like a referundum to know if my neighboors in my small building are for or against a colectif compost to reduce the organics wastes.

For this tool vote I'm using PHP and SQL, my database is build like this:

DBNAME=collectifCompost Table=voteCompost

column1=id PRIMARY AI



To build a chart with statistics vote results (% of YES, NO, BLANK..) I want to make a query on my database to count the number of YES NO AND BLANK but I don't know how. Can you help me please?

If you need more information about my code ask me everything.



select   vote, count(*)
from     voteCompost
group by vote;

Now you get the number of rows per vote value.

  • 1
    This will not count the number of null values. – a_horse_with_no_name Nov 17 '15 at 12:31
  • select vote, count("I have to putt a value YES,NO, BLANK here?") from voteCompost group by vote; – Julihan Nov 17 '15 at 12:35
  • Thank you for your help a_horse_with_no_name but I think with PHP I will make a short calcul to return the numbers of blank vote. I hope... – Julihan Nov 17 '15 at 12:37
  • @a_horse_with_no_name I changed the count(vote) into count(*). Now the NULL values are counted. The OP did not mention that vote could be NULL. – Marco Nov 17 '15 at 12:47
  • $reponse = $bdd->query('SELECT COUNT(vote) AS totalYes from compost WHERE vote="yes"'); and the same request for each choice(yes,no,blank). Thank you for your help! – Julihan Nov 19 '15 at 22:25

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