在SQL中填充动态列

Question

我有下面的sql表tbl_deptExpenses，我想将部门填充为Column：

表结构：

DeptId   Department  Expenses
1        IT           1000
2       Accounting    2000
3       Catering      400

我要实现的是查询以返回下表-部门值已更改为“字段”：

IT     Accounting   Catering
1000    2000         400

我尝试了以下方法，但似乎不起作用：

     SELECT    [d.department] = d.department,  
     [Expenses] = d.expenses
 from tbl_deptExpenses d

Answer 1

您可以尝试对整个表进行数据透视查询：

SELECT
    MAX(CASE WHEN Department = 'IT' THEN Expenses END) AS IT,
    MAX(CASE WHEN Department = 'Accounting' THEN Expenses END) AS Accounting,
    MAX(CASE WHEN Department = 'Catering' THEN Expenses END) AS Catering
FROM tbl_deptExpenses;

Demo