如何在oracle中找到2个逗号分隔的列之间不匹配的字符串

Question

如何在oracle中2个逗号分隔的列之间查找不匹配的字符串

字符串1：Apple，Banana 字符串2：香蕉，橙色

我需要得到苹果

Answer 1

SELECT RESULT, RESULT FROM (
SELECT LISTAGG(DATA,',')  WITHIN GROUP (ORDER BY DATA)RESULT FROM  (
SELECT REGEXP_SUBSTR ('APPLE,BANANA','[^' || ',' || ']+',1,LEVEL)DATA FROM DUAL
CONNECT BY LEVEL <= LENGTH ('APPLE,BANANA') - LENGTH (REPLACE ('APPLE,BANANA', ',')) + 1
MINUS
SELECT REGEXP_SUBSTR ('BANANA,ORANGE','[^' || ',' || ']+',1,LEVEL)DATA FROM DUAL
CONNECT BY LEVEL <= LENGTH ('BANANA,ORANGE') - LENGTH (REPLACE ('BANANA,ORANGE', ',')) + 1))

RESULT                         RESULT                        
------------------------------ ------------------------------
APPLE                          APPLE