纵表转横表sql

纵表结构: 

     fname       ftype             fvalue 


     小明           zaocan         10 

      小明         zhongcan     20 

      小明        wancan          5 




转换后的表结构: 

     fname       zaocan_value          zhongcan_value       wancan_value 


      小明           10                                20                              5             


纵表转横表sql如下: 

select Fname, sum(case Ftype when 'zaocan' then Fvalue else 0 end) as zaocan_value, 

sum(case Ftype when 'zhongcan' then Fvalue else 0 end) as zhongcan_value, 

sum(case Ftype when 'wancan' then Fvalue else 0 end) as wancan_value from case_table group by Fname