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MYSQL getting poll results table


How to output MySQL query results in CSV format?Should I use the datetime or timestamp data type in MySQL?Rewrite Subquery(not in) as JoinHow to get a list of MySQL user accountsWant to learn to improve slow mysql querymysql join: what is faster?MySQL does joining on MUL keys impact performance?MySQL tricky triple joinHow can I get the attributes from a mysql table by specific column?desc table in mysql say Null is No but default is NULL?













1















I have 2 tables, one with poll answers and one with votes:



DESC polls;

Field Type Null Key Default Extra
id int(11) NO PRI NULL auto_increment
pollId int(11) NO MUL NULL
answer varchar(150) YES NULL

DESC votes;
Field Type Null Key Default Extra
id int(11) NO PRI NULL auto_increment
pollId int(11) NO MUL NULL
answerId int(11) NO MUL NULL
userId int(11) NO MUL NULL


I am trying to get following results with all answers and votes:



pollId answerId numberOfVotes
1 1 20
1 2 10
1 3 0


I tried right joins of votes to answers, but it does not work:



SELECT answers.id, COUNT(votes.answerId) FROM answers JOIN votes ON votes.pollId = answers.pollId GROUP BY votes.pollId;









share|improve this question


























    1















    I have 2 tables, one with poll answers and one with votes:



    DESC polls;

    Field Type Null Key Default Extra
    id int(11) NO PRI NULL auto_increment
    pollId int(11) NO MUL NULL
    answer varchar(150) YES NULL

    DESC votes;
    Field Type Null Key Default Extra
    id int(11) NO PRI NULL auto_increment
    pollId int(11) NO MUL NULL
    answerId int(11) NO MUL NULL
    userId int(11) NO MUL NULL


    I am trying to get following results with all answers and votes:



    pollId answerId numberOfVotes
    1 1 20
    1 2 10
    1 3 0


    I tried right joins of votes to answers, but it does not work:



    SELECT answers.id, COUNT(votes.answerId) FROM answers JOIN votes ON votes.pollId = answers.pollId GROUP BY votes.pollId;









    share|improve this question
























      1












      1








      1








      I have 2 tables, one with poll answers and one with votes:



      DESC polls;

      Field Type Null Key Default Extra
      id int(11) NO PRI NULL auto_increment
      pollId int(11) NO MUL NULL
      answer varchar(150) YES NULL

      DESC votes;
      Field Type Null Key Default Extra
      id int(11) NO PRI NULL auto_increment
      pollId int(11) NO MUL NULL
      answerId int(11) NO MUL NULL
      userId int(11) NO MUL NULL


      I am trying to get following results with all answers and votes:



      pollId answerId numberOfVotes
      1 1 20
      1 2 10
      1 3 0


      I tried right joins of votes to answers, but it does not work:



      SELECT answers.id, COUNT(votes.answerId) FROM answers JOIN votes ON votes.pollId = answers.pollId GROUP BY votes.pollId;









      share|improve this question














      I have 2 tables, one with poll answers and one with votes:



      DESC polls;

      Field Type Null Key Default Extra
      id int(11) NO PRI NULL auto_increment
      pollId int(11) NO MUL NULL
      answer varchar(150) YES NULL

      DESC votes;
      Field Type Null Key Default Extra
      id int(11) NO PRI NULL auto_increment
      pollId int(11) NO MUL NULL
      answerId int(11) NO MUL NULL
      userId int(11) NO MUL NULL


      I am trying to get following results with all answers and votes:



      pollId answerId numberOfVotes
      1 1 20
      1 2 10
      1 3 0


      I tried right joins of votes to answers, but it does not work:



      SELECT answers.id, COUNT(votes.answerId) FROM answers JOIN votes ON votes.pollId = answers.pollId GROUP BY votes.pollId;






      mysql






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Mar 8 at 4:43









      Nodir NasirovNodir Nasirov

      384113




      384113






















          1 Answer
          1






          active

          oldest

          votes


















          1














          use left join



          DEMO



          SELECT polls.pollId,polls.id,COUNT(userid) as counts
          FROM polls left JOIN votes ON votes.pollId = polls.pollId and
          polls.id=votes.answerId
          GROUP BY polls.pollId,polls.id order by polls.id


          OUTPUT:



          pollId id counts
          14 17 0
          14 18 2
          14 19 0
          14 20 0





          share|improve this answer

























          • I tried this, it gives me incorrect result where it says that answers with 0 votes have votes.

            – Nodir Nasirov
            Mar 8 at 4:47












          • can u add some sample data then it'll be easy to get it @NodirNasirov

            – fa06
            Mar 8 at 4:48











          • select * from answers; id pollId answer 17 14 black 18 14 brown 19 14 white 20 14 bold select * from votes; id pollId answerId userId 5 14 18 3 6 14 18 2

            – Nodir Nasirov
            Mar 8 at 4:53












          • @NodirNasirov, and from this rows what is your expected output?

            – fa06
            Mar 8 at 4:56











          • answerId countVotes 17 0 18 2 19 0 20 0

            – Nodir Nasirov
            Mar 8 at 4:58










          Your Answer






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          1 Answer
          1






          active

          oldest

          votes








          1 Answer
          1






          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes









          1














          use left join



          DEMO



          SELECT polls.pollId,polls.id,COUNT(userid) as counts
          FROM polls left JOIN votes ON votes.pollId = polls.pollId and
          polls.id=votes.answerId
          GROUP BY polls.pollId,polls.id order by polls.id


          OUTPUT:



          pollId id counts
          14 17 0
          14 18 2
          14 19 0
          14 20 0





          share|improve this answer

























          • I tried this, it gives me incorrect result where it says that answers with 0 votes have votes.

            – Nodir Nasirov
            Mar 8 at 4:47












          • can u add some sample data then it'll be easy to get it @NodirNasirov

            – fa06
            Mar 8 at 4:48











          • select * from answers; id pollId answer 17 14 black 18 14 brown 19 14 white 20 14 bold select * from votes; id pollId answerId userId 5 14 18 3 6 14 18 2

            – Nodir Nasirov
            Mar 8 at 4:53












          • @NodirNasirov, and from this rows what is your expected output?

            – fa06
            Mar 8 at 4:56











          • answerId countVotes 17 0 18 2 19 0 20 0

            – Nodir Nasirov
            Mar 8 at 4:58















          1














          use left join



          DEMO



          SELECT polls.pollId,polls.id,COUNT(userid) as counts
          FROM polls left JOIN votes ON votes.pollId = polls.pollId and
          polls.id=votes.answerId
          GROUP BY polls.pollId,polls.id order by polls.id


          OUTPUT:



          pollId id counts
          14 17 0
          14 18 2
          14 19 0
          14 20 0





          share|improve this answer

























          • I tried this, it gives me incorrect result where it says that answers with 0 votes have votes.

            – Nodir Nasirov
            Mar 8 at 4:47












          • can u add some sample data then it'll be easy to get it @NodirNasirov

            – fa06
            Mar 8 at 4:48











          • select * from answers; id pollId answer 17 14 black 18 14 brown 19 14 white 20 14 bold select * from votes; id pollId answerId userId 5 14 18 3 6 14 18 2

            – Nodir Nasirov
            Mar 8 at 4:53












          • @NodirNasirov, and from this rows what is your expected output?

            – fa06
            Mar 8 at 4:56











          • answerId countVotes 17 0 18 2 19 0 20 0

            – Nodir Nasirov
            Mar 8 at 4:58













          1












          1








          1







          use left join



          DEMO



          SELECT polls.pollId,polls.id,COUNT(userid) as counts
          FROM polls left JOIN votes ON votes.pollId = polls.pollId and
          polls.id=votes.answerId
          GROUP BY polls.pollId,polls.id order by polls.id


          OUTPUT:



          pollId id counts
          14 17 0
          14 18 2
          14 19 0
          14 20 0





          share|improve this answer















          use left join



          DEMO



          SELECT polls.pollId,polls.id,COUNT(userid) as counts
          FROM polls left JOIN votes ON votes.pollId = polls.pollId and
          polls.id=votes.answerId
          GROUP BY polls.pollId,polls.id order by polls.id


          OUTPUT:



          pollId id counts
          14 17 0
          14 18 2
          14 19 0
          14 20 0






          share|improve this answer














          share|improve this answer



          share|improve this answer








          edited Mar 8 at 5:05

























          answered Mar 8 at 4:45









          fa06fa06

          17.5k21018




          17.5k21018












          • I tried this, it gives me incorrect result where it says that answers with 0 votes have votes.

            – Nodir Nasirov
            Mar 8 at 4:47












          • can u add some sample data then it'll be easy to get it @NodirNasirov

            – fa06
            Mar 8 at 4:48











          • select * from answers; id pollId answer 17 14 black 18 14 brown 19 14 white 20 14 bold select * from votes; id pollId answerId userId 5 14 18 3 6 14 18 2

            – Nodir Nasirov
            Mar 8 at 4:53












          • @NodirNasirov, and from this rows what is your expected output?

            – fa06
            Mar 8 at 4:56











          • answerId countVotes 17 0 18 2 19 0 20 0

            – Nodir Nasirov
            Mar 8 at 4:58

















          • I tried this, it gives me incorrect result where it says that answers with 0 votes have votes.

            – Nodir Nasirov
            Mar 8 at 4:47












          • can u add some sample data then it'll be easy to get it @NodirNasirov

            – fa06
            Mar 8 at 4:48











          • select * from answers; id pollId answer 17 14 black 18 14 brown 19 14 white 20 14 bold select * from votes; id pollId answerId userId 5 14 18 3 6 14 18 2

            – Nodir Nasirov
            Mar 8 at 4:53












          • @NodirNasirov, and from this rows what is your expected output?

            – fa06
            Mar 8 at 4:56











          • answerId countVotes 17 0 18 2 19 0 20 0

            – Nodir Nasirov
            Mar 8 at 4:58
















          I tried this, it gives me incorrect result where it says that answers with 0 votes have votes.

          – Nodir Nasirov
          Mar 8 at 4:47






          I tried this, it gives me incorrect result where it says that answers with 0 votes have votes.

          – Nodir Nasirov
          Mar 8 at 4:47














          can u add some sample data then it'll be easy to get it @NodirNasirov

          – fa06
          Mar 8 at 4:48





          can u add some sample data then it'll be easy to get it @NodirNasirov

          – fa06
          Mar 8 at 4:48













          select * from answers; id pollId answer 17 14 black 18 14 brown 19 14 white 20 14 bold select * from votes; id pollId answerId userId 5 14 18 3 6 14 18 2

          – Nodir Nasirov
          Mar 8 at 4:53






          select * from answers; id pollId answer 17 14 black 18 14 brown 19 14 white 20 14 bold select * from votes; id pollId answerId userId 5 14 18 3 6 14 18 2

          – Nodir Nasirov
          Mar 8 at 4:53














          @NodirNasirov, and from this rows what is your expected output?

          – fa06
          Mar 8 at 4:56





          @NodirNasirov, and from this rows what is your expected output?

          – fa06
          Mar 8 at 4:56













          answerId countVotes 17 0 18 2 19 0 20 0

          – Nodir Nasirov
          Mar 8 at 4:58





          answerId countVotes 17 0 18 2 19 0 20 0

          – Nodir Nasirov
          Mar 8 at 4:58



















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