MYSQL query change column value based on the other column value











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I have a MySQL query .I want to set column hours=0 when the sub task is 'PTO'.I tried below query but it is not working as expected. 



 select distinct t.hours, t.subtask,

        CASE sub task

         WHEN 'PTO' THEN t.hours=0

        ELSE t.hours

        END as subtask

    from task t





mysql







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    up vote
    1
    down vote

    favorite












    I have a MySQL query .I want to set column hours=0 when the sub task is 'PTO'.I tried below query but it is not working as expected. 



     select distinct t.hours, t.subtask,
    
        CASE sub task
    
         WHEN 'PTO' THEN t.hours=0
    
        ELSE t.hours
    
        END as subtask
    
    from task t





    mysql







    share|improve this question


























      up vote
      1
      down vote

      favorite









      up vote
      1
      down vote

      favorite











      I have a MySQL query .I want to set column hours=0 when the sub task is 'PTO'.I tried below query but it is not working as expected. 



       select distinct t.hours, t.subtask,
      
        CASE sub task
      
         WHEN 'PTO' THEN t.hours=0
      
        ELSE t.hours
      
        END as subtask
      
    from task t





      mysql







      share|improve this question















      I have a MySQL query .I want to set column hours=0 when the sub task is 'PTO'.I tried below query but it is not working as expected. 



       select distinct t.hours, t.subtask,
      
        CASE sub task
      
         WHEN 'PTO' THEN t.hours=0
      
        ELSE t.hours
      
        END as subtask
      
    from task t





      mysql




      mysql






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited Nov 22 at 6:27









      CS_noob

      3951211




      3951211










      asked Nov 22 at 6:16









      sandeep.mishra

      34221131




      34221131
























          1 Answer
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          1
          down vote



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          You can try below



          select distinct t.hours, t.subtask, 
          
CASE t.subtask WHEN 'PTO' THEN 0 ELSE t.hours END as updated_subtask 
          
from task t





          share|improve this answer





















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            1 Answer
            1






            active

            oldest

            votes








            1 Answer
            1






            active

            oldest

            votes









            active

            oldest

            votes






            active

            oldest

            votes








            up vote
            1
            down vote



            accepted










            You can try below



            select distinct t.hours, t.subtask, 
            
CASE t.subtask WHEN 'PTO' THEN 0 ELSE t.hours END as updated_subtask 
            
from task t





            share|improve this answer

























              up vote
              1
              down vote



              accepted










              You can try below



              select distinct t.hours, t.subtask, 
              
CASE t.subtask WHEN 'PTO' THEN 0 ELSE t.hours END as updated_subtask 
              
from task t





              share|improve this answer























                up vote
                1
                down vote



                accepted







                up vote
                1
                down vote



                accepted






                You can try below



                select distinct t.hours, t.subtask, 
                
CASE t.subtask WHEN 'PTO' THEN 0 ELSE t.hours END as updated_subtask 
                
from task t





                share|improve this answer












                You can try below



                select distinct t.hours, t.subtask, 
                
CASE t.subtask WHEN 'PTO' THEN 0 ELSE t.hours END as updated_subtask 
                
from task t






                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered Nov 22 at 6:19









                fa06

                10.1k1917




                10.1k1917






























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