查询下表中2020年choice_answer值为0，1，2，3，4，5分别对应的数据条数以及choice_answer总数据条数:

sql语句：

select count(case when choice_answer = 0 then 1 end) totallyDisagreeNum,
 　　　 count(case when choice_answer = 1 then 1 end) partialDisagreementNum,
       count(case when choice_answer = 3 then 1 end) indeterminateNum,
       count(case when choice_answer = 4 then 1 end) partiallyAgreeNum,
       count(case when choice_answer = 5 then 1 end) inFullAgreementNum,
       count(case when choice_answer = 2 then 1 end) uninvolvedNum,
       count(choice_answer) sumNum
from ls_manager_feedback_plan_example 
where create_time = 2020       

另灵活用法(网上看的，没有测试过):https://blog.csdn.net/KaiSarH/article/details/103275998