当要显示的列的筛选条件不同时，怎么写sql

提示：使用case when

例：

SELECT MIN(province_id) provinceNumber, MIN(province_name) provinceName,
               COUNT(project_id)                                                       a,
               SUM(this_issue_money)                                                   b,
               SUM(CASE
                       WHEN is_not_exit = true THEN
                           1
                   END)                                                                c,
               SUM(this_issue_money)                                                   d,
               SUM(CASE WHEN is_not_exit = true AND enterprise_type_id = 1 THEN 1 END) e,
               SUM(CASE
                       WHEN
                           enterprise_type_id = 1 THEN this_issue_money END)           f,
               SUM(CASE WHEN is_not_exit = true AND enterprise_type_id = 2 THEN 1 END) g,
               SUM(CASE
                       WHEN
                           enterprise_type_id = 2 THEN this_issue_money END)           h,
               SUM(CASE WHEN is_not_exit = true AND enterprise_type_id = 2 THEN 1 END) i,
               SUM(CASE
                       WHEN
                           enterprise_type_id = 2 THEN this_issue_money END)           j
        FROM k

标签：CASE,END,SUM,WHEN,筛选,sql,当要,type,id
来源： https://www.cnblogs.com/woyujiezhen/p/13698947.html