Question

我的查询位置有两个错误检查我的查询是对还是错我是Oracle新手，所以不要在意

这是SQL

SQL正在给出错误：ORA-00909: Invalid Number of Arguments

CREATE VIEW order_summery
AS
SELECT o.id,
    o.order_date,(cu.first_name||' '|| cu.last_name) as customer_name
    ,Sum(NVL(p.price,0)) as total_amount
    ,Sum(NVL(p.discount_amount,0)) as discount_amount
    ,NVL(Sum(NVL(p.price,0),0)) - NVL(Sum(NVL(p.discount_amount,0)),0) as final_amount
FROM tbl_order o
INNER JOIN tbl_customer cu on o.customer_id = cu.id
INNER JOIN tbl_order_item oi on o.id= oi.order_id
INNER JOIN tbl_product p on oi.product_id= p.id;

SQL Error: ORA-00936: missing expression
00936. 00000 -  "missing expression"

CREATE VIEW sales_report
AS
SELECT o.id,
    ,o.order_date
    ,(cu.first_name||' '|| cu.last_name) as customer_name,
    ,Sum(NVL(p.price,0)) as total_amount
    ,Sum(NVL(p.discount_amount,0)) as discount_amount
    ,NVL(Sum(NVL(p.price,0),0)) - NVL(Sum(NVL(p.discount_amount,0)),0) as final_amount
    ,CASE o.is_deliverd WHEN 'y' THEN 'Deliverd'  ELSE 'Not Deliverd' END as status    
FROM tbl_order o
INNER JOIN tbl_customer cu on o.customer_id = cu.id
INNER JOIN tbl_order_item oi on o.id= oi.order_id
INNER JOIN tbl_product p on oi.product_id= p.id;

Answer 1

您的问题在这里(Sum(NVL(p.price,0),0))另外，我猜您需要使用按功能分组，因为您有总和。而且不需要nvl。

CREATE VIEW order_summery
AS
SELECT o.id,
    o.order_date,(cu.first_name||' '|| cu.last_name) as customer_name
    ,Sum(NVL(p.price,0)) as total_amount
    ,Sum(NVL(p.discount_amount,0)) as discount_amount
    ,Sum(NVL(p.price,0)) - Sum(NVL(p.discount_amount,0)) as final_amount
FROM tbl_order o
INNER JOIN tbl_customer cu on o.customer_id = cu.id
INNER JOIN tbl_order_item oi on o.id= oi.order_id
INNER JOIN tbl_product p on oi.product_id= p.id
group by o.id, o.order_date ,cu.first_name,cu.last_name ;

对于第二个查询，删除ID后面的,

o.id,
    ,

Answer 2

修复final_amount参数（仅需要一个NVL函数）：

,Sum(NVL(p.price,0)) - Sum(NVL(p.discount_amount,0)) as final_amount

SQL正在给出错误：ORA-00909：无效的参数数量

2 个答案: