所以我创建了一些游标来存储正在加载到表中的数据。数据正在一次加载一个,我需要对整个数据集进行验证,而不仅仅是单个记录。所以会有这样的数据(但同样只会加载个人而不是整体)
form_no | type
---------------
5155-55 | -1
5155-55 | -1
5155-55 | 2
5155-55 | 1
|
4568-98 | -1
4568-98 | -1
4568-98 | -1
4568-98 | 2
4568-98 | 1
3302-48 | 1
3302-45 | 2
3302-45 | -1
然后,游标将获取总和或每种类型,然后将其与不同的form_no配对。然后在底部检查以确保每个form_no总是有1和-1(即form_no 5155-55至少有一个类型1和一个类型-1)
DECLARE
error VARCHAR2(1) := 'N';
CURSOR XXX IS
SELECT form_no, sum(type) as sum_type_neg
FROM my_table
WHERE type = -1
GROUP BY form_no;
CURSOR YYY IS
SELECT form_no, sum(type) as sum_type_pos
FROM my_table
WHERE type = 1
GROUP BY form_no;
CURSOR ZZZ(xx_form_no VARCHAR2, yy_form_no VARCHAR2) IS
SELECT form_no
FROM my_table
WHERE form_no = xx_form_no
AND form_no = vv_form_no
GROUP BY form_no;
x_form XXX%ROWTYPE;
y_form YYY%ROWTYPE;
ZZZRow ZZZ%ROWTYPE;
BEGIN
OPEN XXX;
LOOP
FETCH XXX
INTO x_form;
EXIT WHEN XXX%NOTFOUND;
OPEN YYY;
LOOP
FETCH YYY
INTO y_form;
EXIT WHEN YYY%NOTFOUND;
OPEN ZZZ(x_form.form_no, y_form.form_no);
LOOP
FETCH ZZZ
INTO ZZZRow;
EXIT WHEN ZZZ%NOTFOUND;
dbms_output.put_line('Distinct: ' || x_form.form_no);
dbms_output.put_line('SUM x: ' || x_form.sum_type_neg);
dbms_output.put_line('SUM y: ' || y_form.sum_type_pos);
dbms_output.put_line('----------------------------');
END LOOP;
CLOSE ZZZ;
END LOOP;
CLOSE YYY;
END LOOP;
CLOSE XXX;
IF x_form.sum_type_neg = O or y_form.sum_type_pos = 0 THEN
v_error_in_process := 'Y';
dbms_output.put_line('ERROR MESSAGE');
ELSE
dbms_output.put_line('GREATE JOB');
END IF;
END;
输出就像这样
Distinct : 5155-55
SUM x: -2
SUM y: 1
----------------------------
Distinct: 4568-98
SUM x: -3
SUM y: 1
----------------------------
Distinct: 3302-48
SUM x: -1
SUM y: 1
----------------------------
GREAT JOB!
除非form_no没有-1或1,否则它的效果很好
输入示例:
form_no | type
---------------
5155-55 | -1
5155-55 | -1
5155-55 | 2
5155-55 | 1
|
4568-98 | -1
4568-98 | -1
4568-98 | -1
4568-98 | 2
4568-98 | 1
3302-48 | 1
3302-48 | 2
请注意,form_no 3302-48没有-1。那么输出就像这样
Distinct: 5155-55
SUM x: -2
SUM y: 1
----------------------------
Distinct: 4568-98
SUM x: -3
SUM y: 1
----------------------------
GREAT JOB!
除了我希望它像这样
Distinct: 5155-55
SUM x: -2
SUM y: 1
----------------------------
Distinct: 4568-98
SUM x: -3
SUM y: 1
----------------------------
Distinct: 3302-48
SUM x: 0
SUM y: 1
----------------------------
ERROR MESSAGE
有谁能告诉我如何去做这件事。我不确定游标是否可以接受空值(即当没有1或-1时,则没有任何内容可以加载到游标中)。
答案 0 :(得分:2)
实际上不需要PL / SQL处理,只需使用SQL即可实现所需的结果:
SQL> select col
2 , val
3 from ( select form_no as "Distinct:"
4 , to_char(sum(case when type1 = -1 then type1 else 0 end)) as sumx
5 , to_char(sum(case when type1 = 1 then type1 else 0 end)) as sumy
6 from t1
7 group by form_no
8 )
9 unpivot(
10 val for col in ("Distinct:", sumx, sumy)
11 )
12 ;
结果:
COL VAL
--------- ----------
Distinct: 5155-55
SUMX -2
SUMY 1
Distinct: 4568-98
SUMX -3
SUMY 1
Distinct: 3302-48
SUMX 0
SUMY 1
9 rows selected
请注意。 {11}版本引入了Unpivot
运算符,并在上述查询中用于数据格式化。如果您的Oracle版本高于11g,您可以根据需要使用PL / SQL进行子查询(内联视图)和格式输出。