PL/Sql IF循环具有多个OR-IN';s
我有一个pl/sql循环,如下所示:PL/Sql IF循环具有多个OR-IN';s,sql,oracle,plsql,Sql,Oracle,Plsql,我有一个pl/sql循环,如下所示: IF A IN (1,2,3,4,5) OR B IN (1,2,3,4,5) OR C IN (1,2,3,4,5) THEN --Do Something-- ELSIF A IN (6,7) AND B IN (6,7) AND C IN (6,7) THEN --Do Something Else-- ELSE --Do Nothing-- END IF; 有没有更好的方法来编写上述循环 以上示例仅供参考。我的原始程序在IF循
IF A IN (1,2,3,4,5) OR B IN (1,2,3,4,5) OR C IN (1,2,3,4,5)
THEN
--Do Something--
ELSIF A IN (6,7) AND B IN (6,7) AND C IN (6,7)
THEN
--Do Something Else--
ELSE
--Do Nothing--
END IF;
有没有更好的方法来编写上述循环
以上示例仅供参考。我的原始程序在IF循环中包含了更多的条件
请帮助我优化它。我没有主意了
谢谢。试试
CASE
语句。它将比IF
语句更具可读性。
尝试
案例
语句。它将比IF
语句更具可读性。
创建一个(嵌套表)类型来保存值和测试条件,然后您可以使用操作来比较它们:
相当于(a MULTISET INTERSECT DISTINCT b)不是空的
语句;及或
相当于(除DISTINCT b外的多集)为空
语句和
CREATE OR REPLACE TYPE Number_Table_Type AS TABLE OF NUMBER
/
CREATE OR REPLACE FUNCTION Test_Multiple_Values (
A IN NUMBER,
B IN NUMBER,
C IN NUMBER,
D IN NUMBER,
E IN NUMBER,
F IN NUMBER,
G IN NUMBER,
H IN NUMBER
) RETURN NUMBER
AS
inputs Number_Table_Type := Number_Table_Type( A, B, C, D, E, F, G, H );
BEGIN
IF ( inputs MULTISET INTERSECT DISTINCT Number_Table_Type( 1, 2, 3, 4, 5 ) ) IS NOT EMPTY THEN
RETURN 1;
ELSIF ( inputs MULTISET EXCEPT DISTINCT Number_Table_Type( 6, 7 ) ) IS EMPTY THEN
RETURN 2;
ELSE
RETURN 3;
END IF;
END;
/
WITH inputs AS (
SELECT 1 AS A, 2 AS B, 3 AS C, 4 AS D, 5 AS E, 6 AS F, 7 AS G, 8 AS H FROM DUAL
UNION ALL
SELECT 6, 7, 6, 7, 6, 7, 6, 7 FROM DUAL
UNION ALL
SELECT 8, 9, 10, 11, 12, 13, 14, 15 FROM DUAL
)
SELECT A, B, C, D, E, F, G, H, Test_Multiple_Values( A, B, C, D, E, F, G, H ) FROM inputs
| A | B | C | D | E | F | G | H | TEST_MULTIPLE_VALUES(A,B,C,D,E,F,G,H) |
|---|---|----|----|----|----|----|----|---------------------------------------|
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 1 |
| 6 | 7 | 6 | 7 | 6 | 7 | 6 | 7 | 2 |
| 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 3 |
查询1:
CREATE OR REPLACE TYPE Number_Table_Type AS TABLE OF NUMBER
/
CREATE OR REPLACE FUNCTION Test_Multiple_Values (
A IN NUMBER,
B IN NUMBER,
C IN NUMBER,
D IN NUMBER,
E IN NUMBER,
F IN NUMBER,
G IN NUMBER,
H IN NUMBER
) RETURN NUMBER
AS
inputs Number_Table_Type := Number_Table_Type( A, B, C, D, E, F, G, H );
BEGIN
IF ( inputs MULTISET INTERSECT DISTINCT Number_Table_Type( 1, 2, 3, 4, 5 ) ) IS NOT EMPTY THEN
RETURN 1;
ELSIF ( inputs MULTISET EXCEPT DISTINCT Number_Table_Type( 6, 7 ) ) IS EMPTY THEN
RETURN 2;
ELSE
RETURN 3;
END IF;
END;
/
WITH inputs AS (
SELECT 1 AS A, 2 AS B, 3 AS C, 4 AS D, 5 AS E, 6 AS F, 7 AS G, 8 AS H FROM DUAL
UNION ALL
SELECT 6, 7, 6, 7, 6, 7, 6, 7 FROM DUAL
UNION ALL
SELECT 8, 9, 10, 11, 12, 13, 14, 15 FROM DUAL
)
SELECT A, B, C, D, E, F, G, H, Test_Multiple_Values( A, B, C, D, E, F, G, H ) FROM inputs
| A | B | C | D | E | F | G | H | TEST_MULTIPLE_VALUES(A,B,C,D,E,F,G,H) |
|---|---|----|----|----|----|----|----|---------------------------------------|
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 1 |
| 6 | 7 | 6 | 7 | 6 | 7 | 6 | 7 | 2 |
| 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 3 |
:
CREATE OR REPLACE TYPE Number_Table_Type AS TABLE OF NUMBER
/
CREATE OR REPLACE FUNCTION Test_Multiple_Values (
A IN NUMBER,
B IN NUMBER,
C IN NUMBER,
D IN NUMBER,
E IN NUMBER,
F IN NUMBER,
G IN NUMBER,
H IN NUMBER
) RETURN NUMBER
AS
inputs Number_Table_Type := Number_Table_Type( A, B, C, D, E, F, G, H );
BEGIN
IF ( inputs MULTISET INTERSECT DISTINCT Number_Table_Type( 1, 2, 3, 4, 5 ) ) IS NOT EMPTY THEN
RETURN 1;
ELSIF ( inputs MULTISET EXCEPT DISTINCT Number_Table_Type( 6, 7 ) ) IS EMPTY THEN
RETURN 2;
ELSE
RETURN 3;
END IF;
END;
/
WITH inputs AS (
SELECT 1 AS A, 2 AS B, 3 AS C, 4 AS D, 5 AS E, 6 AS F, 7 AS G, 8 AS H FROM DUAL
UNION ALL
SELECT 6, 7, 6, 7, 6, 7, 6, 7 FROM DUAL
UNION ALL
SELECT 8, 9, 10, 11, 12, 13, 14, 15 FROM DUAL
)
SELECT A, B, C, D, E, F, G, H, Test_Multiple_Values( A, B, C, D, E, F, G, H ) FROM inputs
| A | B | C | D | E | F | G | H | TEST_MULTIPLE_VALUES(A,B,C,D,E,F,G,H) |
|---|---|----|----|----|----|----|----|---------------------------------------|
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 1 |
| 6 | 7 | 6 | 7 | 6 | 7 | 6 | 7 | 2 |
| 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 3 |
创建(嵌套表)类型以保存值和测试条件,然后可以使用操作来比较它们:
相当于(a MULTISET INTERSECT DISTINCT b)不是空的
语句;及或
相当于(除DISTINCT b外的多集)为空
语句和
CREATE OR REPLACE TYPE Number_Table_Type AS TABLE OF NUMBER
/
CREATE OR REPLACE FUNCTION Test_Multiple_Values (
A IN NUMBER,
B IN NUMBER,
C IN NUMBER,
D IN NUMBER,
E IN NUMBER,
F IN NUMBER,
G IN NUMBER,
H IN NUMBER
) RETURN NUMBER
AS
inputs Number_Table_Type := Number_Table_Type( A, B, C, D, E, F, G, H );
BEGIN
IF ( inputs MULTISET INTERSECT DISTINCT Number_Table_Type( 1, 2, 3, 4, 5 ) ) IS NOT EMPTY THEN
RETURN 1;
ELSIF ( inputs MULTISET EXCEPT DISTINCT Number_Table_Type( 6, 7 ) ) IS EMPTY THEN
RETURN 2;
ELSE
RETURN 3;
END IF;
END;
/
WITH inputs AS (
SELECT 1 AS A, 2 AS B, 3 AS C, 4 AS D, 5 AS E, 6 AS F, 7 AS G, 8 AS H FROM DUAL
UNION ALL
SELECT 6, 7, 6, 7, 6, 7, 6, 7 FROM DUAL
UNION ALL
SELECT 8, 9, 10, 11, 12, 13, 14, 15 FROM DUAL
)
SELECT A, B, C, D, E, F, G, H, Test_Multiple_Values( A, B, C, D, E, F, G, H ) FROM inputs
| A | B | C | D | E | F | G | H | TEST_MULTIPLE_VALUES(A,B,C,D,E,F,G,H) |
|---|---|----|----|----|----|----|----|---------------------------------------|
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 1 |
| 6 | 7 | 6 | 7 | 6 | 7 | 6 | 7 | 2 |
| 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 3 |
查询1:
CREATE OR REPLACE TYPE Number_Table_Type AS TABLE OF NUMBER
/
CREATE OR REPLACE FUNCTION Test_Multiple_Values (
A IN NUMBER,
B IN NUMBER,
C IN NUMBER,
D IN NUMBER,
E IN NUMBER,
F IN NUMBER,
G IN NUMBER,
H IN NUMBER
) RETURN NUMBER
AS
inputs Number_Table_Type := Number_Table_Type( A, B, C, D, E, F, G, H );
BEGIN
IF ( inputs MULTISET INTERSECT DISTINCT Number_Table_Type( 1, 2, 3, 4, 5 ) ) IS NOT EMPTY THEN
RETURN 1;
ELSIF ( inputs MULTISET EXCEPT DISTINCT Number_Table_Type( 6, 7 ) ) IS EMPTY THEN
RETURN 2;
ELSE
RETURN 3;
END IF;
END;
/
WITH inputs AS (
SELECT 1 AS A, 2 AS B, 3 AS C, 4 AS D, 5 AS E, 6 AS F, 7 AS G, 8 AS H FROM DUAL
UNION ALL
SELECT 6, 7, 6, 7, 6, 7, 6, 7 FROM DUAL
UNION ALL
SELECT 8, 9, 10, 11, 12, 13, 14, 15 FROM DUAL
)
SELECT A, B, C, D, E, F, G, H, Test_Multiple_Values( A, B, C, D, E, F, G, H ) FROM inputs
| A | B | C | D | E | F | G | H | TEST_MULTIPLE_VALUES(A,B,C,D,E,F,G,H) |
|---|---|----|----|----|----|----|----|---------------------------------------|
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 1 |
| 6 | 7 | 6 | 7 | 6 | 7 | 6 | 7 | 2 |
| 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 3 |
:
CREATE OR REPLACE TYPE Number_Table_Type AS TABLE OF NUMBER
/
CREATE OR REPLACE FUNCTION Test_Multiple_Values (
A IN NUMBER,
B IN NUMBER,
C IN NUMBER,
D IN NUMBER,
E IN NUMBER,
F IN NUMBER,
G IN NUMBER,
H IN NUMBER
) RETURN NUMBER
AS
inputs Number_Table_Type := Number_Table_Type( A, B, C, D, E, F, G, H );
BEGIN
IF ( inputs MULTISET INTERSECT DISTINCT Number_Table_Type( 1, 2, 3, 4, 5 ) ) IS NOT EMPTY THEN
RETURN 1;
ELSIF ( inputs MULTISET EXCEPT DISTINCT Number_Table_Type( 6, 7 ) ) IS EMPTY THEN
RETURN 2;
ELSE
RETURN 3;
END IF;
END;
/
WITH inputs AS (
SELECT 1 AS A, 2 AS B, 3 AS C, 4 AS D, 5 AS E, 6 AS F, 7 AS G, 8 AS H FROM DUAL
UNION ALL
SELECT 6, 7, 6, 7, 6, 7, 6, 7 FROM DUAL
UNION ALL
SELECT 8, 9, 10, 11, 12, 13, 14, 15 FROM DUAL
)
SELECT A, B, C, D, E, F, G, H, Test_Multiple_Values( A, B, C, D, E, F, G, H ) FROM inputs
| A | B | C | D | E | F | G | H | TEST_MULTIPLE_VALUES(A,B,C,D,E,F,G,H) |
|---|---|----|----|----|----|----|----|---------------------------------------|
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 1 |
| 6 | 7 | 6 | 7 | 6 | 7 | 6 | 7 | 2 |
| 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 3 |
你说的“有更好的方法”是什么意思?你不喜欢这段代码的什么地方?我们没有关于你要完成什么的上下文。我有8个变量要与14个值进行比较。我只是想知道是否有更好的方法来编写它,因为我当前的循环看起来非常大和破旧。没有
if-loop
…你说“有更好的方法”是什么意思?你不喜欢这段代码的什么地方?我们没有关于你要完成什么的上下文。我有8个变量要与14个值进行比较。我只是想知道是否有更好的方法来编写它,因为我当前的循环看起来非常大和破旧。没有if-loop
。。。