我遇到下面的过程有问题,因为每当我传递月份和年份的日期时,IF条件会循环显示在我的表中的记录数 - 只存在两行 - 并且它还显示了两种可能性。我还把结果包括在内以表明我的意思!
PRODUCT_NUM ORDER_NUM QUANTITY PRICE MONTHLY_DATE
-------------- ----------- ------------- ------------ -------------
12345 106 3 19.99 21-DEC-15
67894 107 1 19.99 21-DEC-15
CREATE OR REPLACE PROCEDURE Proce_Name (Pram_Date DATE )
AS
BGIN
FOR Y IN
(SELECT SUM(PRICE) AS TOTAL_AMOUNT, SUM(NVL(QUANTITY,0) * NVL (
(PRICE,0)) AS TOTAL, MONTHLY_DATE
FROM PRODUCTS
GROUP BY MONTHLY_DATE
ORDER BY MONTHLY_DATE DESC) LOOP
IF TO_CHAR( Y.MONTHLY_DATE, 'mm-yyyy')= TO_CHAR(Pram_Date,'mm-yyyy') THEN
DBMS_OUTPUT.PUT_LINE('TOTAL AMOUNT: '|| ' '|| Y.TOTAL_AMOUNT);
DBMS_OUTPUT.PUT_LINE('');
DBMS_OUTPUT.PUT_LINE('TOTAL: '|| ' '|| Y.TOTAL);
ELSE
DBMS_OUTPUT.PUT_LINE('No Data for this month');
END IF;
END LOOP;
END Proce_name;
调用块:
DECLARE
MONTHLY_D DATE := TO_DATE('01-2012','mm-yyyy');
BEGIN
Proce_Name(MONTHLY_D);
END;
/
这是我传递的日期与表格中的记录匹配的时间:
No Data for this month
TOTAL AMOUNT: 4
TOTAL: 99.96
当我传递表格中不存在的日期时的结果:
No Data for this month
No Data for this month
如何更改我的程序以准确检查上述日期格式?
答案 0 :(得分:0)
我有以下更新程序
CREATE OR REPLACE PROCEDURE get_sales_report(c_date date) AS
l_amount number(18, 2);
l_total number(18, 2);
BEGIN
begin
SELECT SUM(PRICE), SUM(NVL(QUANTITY, 0) * NVL(PRICE, 0))
into l_amount, l_total
FROM product
where TO_CHAR(MONTHLY_DATE, 'mm-yyyy') = to_char(c_date, 'mm-yyyy')
GROUP BY TO_CHAR(MONTHLY_DATE, 'mm-yyyy')
ORDER BY TO_CHAR(MONTHLY_DATE, 'mm-yyyy') DESC;
DBMS_OUTPUT.PUT_LINE('TOTAL AMOUNT: ' || ' ' || l_amount);
DBMS_OUTPUT.PUT_LINE('');
DBMS_OUTPUT.PUT_LINE('TOTAL: ' || ' ' || l_total);
exception
when no_data_found then
DBMS_OUTPUT.PUT_LINE('No Data for this month');
END; -- end of exception
-- add your code here
-- add your code here
-- add your code here
end;
还为dbms_output回显文本调用以下命令。
set serveroutput on size 30000;
将您的程序称为
declare
c_date2 DATE := TO_DATE('12-2015','mm-yyyy');
begin
get_sales_report(c_date2);
end;
答案 1 :(得分:0)
以下是代码,您也可以考虑异常处理: 很少有观察,你认为prem_date是自己的char而不是传递日期。此外,如果数据集很大并且monthly_date已编制索引,则应避免在monthly_date上应用to_char条件。
CREATE OR REPLACE PROCEDURE Proce_Name (Pram_Date DATE )
AS
l_total_amount float;
l_total float;
BEGIN
SELECT SUM(PRICE) AS TOTAL_AMOUNT,
SUM(NVL(QUANTITY,0) * NVL(PRICE,0)) AS TOTAL
INTO l_total_amount, l_total
FROM PRODUCTS
WHERE to_char(monthly_date, 'mm-yyyy') = to_char(pram_date, 'mm-yyyy');
if(l_total_amount is not null) then
DBMS_OUTPUT.PUT_LINE('TOTAL AMOUNT: '|| ' '|| L_TOTAL_AMOUNT);
DBMS_OUTPUT.PUT_LINE('');
DBMS_OUTPUT.PUT_LINE('TOTAL: '|| ' '|| L_TOTAL);
else
DBMS_OUTPUT.PUT_LINE('No Data for this month');
end if;
END Proce_name;
/
答案 2 :(得分:0)
日期是固定大小的类型。因此,如果要按整月分组,则必须将日期列查询为char。这意味着,您应该使用TO_CHAR而不是TO_DATE。
这是(更简单)的方法(我的更改是小写的) -
CREATE OR REPLACE PROCEDURE Proce_Name (Pram_Date date) AS
l_month char(7);
l_total_amount number;
l_total number;
BEGIN
SELECT to_char(monthly_date,'mm-yyyy') as month,
SUM(PRICE) AS TOTAL_AMOUNT,
SUM(NVL(QUANTITY,0)*NVL(PRICE,0)) AS TOTAL
INTO l_month, l_total_amount, l_total
FROM PRODUCTS
where to_char(monthly_date,'mm-yyyy')=to_char(Pram_Date, 'mm-yyyy')
GROUP BY to_char(monthly_date,'mm-yyyy');
if l_month is not null then
DBMS_OUTPUT.PUT_LINE('TOTAL AMOUNT: '|| ' '|| Y.TOTAL_AMOUNT);
DBMS_OUTPUT.PUT_LINE('');
DBMS_OUTPUT.PUT_LINE('TOTAL: '|| ' '|| Y.TOTAL);
else
DBMS_OUTPUT.PUT_LINE('No Data for this month');
end if;
END Proce_name;
/
以下是一些测试代码 - http://sqlfiddle.com/#!4/b1068/2