sql - 列上的数据透视表deptno和行上的计数和薪水？

Question

谁能纠正我在旋转行和列时做错了什么？

--Trying to count no. of employees in each dept and pivoting it as deptno on columns and counts of no. of employees
-- rows

SELECT 10, 20, 30
FROM emp
PIVOT
(
count(deptno)
FOR empno IN ([10],[20],[30])
)
as pt

--Trying to sum of salary in each dept and pivoting it as deptno on columns and sum of salary of rows but same repeating nature
-- rows

SELECT 10, 20, 30
FROM emp
PIVOT
(
deptno(deptno)
FOR deptno IN ([10],[20],[30])
)
as pt

Answer 1

试试这个——

DECLARE @temp TABLE (deptno INT)

INSERT INTO @temp (deptno)
VALUES (10),(20),(20), (40),(30)

SELECT [10], [20], [30]
FROM @temp
PIVOT
(
    COUNT(deptno)
    FOR deptno IN ([10], [20], [30])
) pt