sql 把科室编码里包括B的字符全换成C字符

create table defecttype(defecttype1 nvarchar(20)，defecttype2 nvarchar(20)，defecttype3 nvarchar(20)，defecttype4 nvarchar(20)，defecttype5 nvarchar(20)，defecttype6 nvarchar(20) ) insert into defecttype values('True'，'False'，'True'，null，null，null) select a，b，c，d，e，f，(a+b+c+d+e+f) g from (select case defecttype1 when 'True' then '中' else '' end as a ， case defecttype2 when 'True' then '国' else '' end as b ， case defecttype3 when 'True' then '五' else '' end as c ， case defecttype4 when 'True' then '十' else '' end as d ， case defecttype5 when 'True' then '六' else '' end as e ， case defecttype6 when 'True' then '民' else '' end as f from defecttype ) Z