使用pivot转换空值

Question

我试图在我的脚本中转换NULL值我也在使用PIVOT函数。这是我的脚本，我尝试将NULL转换为＆＃34; 0＆＃34;

声明@custnum nvarchar（7）=＆＃39; 1124＆＃39; 声明@yr smallint = 2016

SELECT 'Customer Orders Returned' as Description, *
FROM (
SELECT left(datename(month,r.rma_date),3) AS RetMonth, 
ISNULL(COUNT(r.rma_num),0) as OrdersReturned
FROM dbo.rma r
WHERE r.cust_num = @custnum AND YEAR(r.rma_date) = @yr
GROUP BY left(datename(month,r.rma_date),3),r.rma_num
)
AS R

PIVOT
(
SUM(OrdersReturned)
FOR RetMonth
IN (Jan,Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec)
)AS pvt

我的结果：

非常感谢任何有助于解决我的问题的建议。

谢谢！

Answer 1

使用ISNULL（）函数

Select ISNULL(columnname,0) from tablename