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摘要： 返回一个值 create or replace FUNCTION GET_KEY_BY_QUERY ( AAA IN VARCHAR2 ) RETURN NUMBER IS ITEM_VALUE NUMBER; BEGIN SELECT 'TEST' INTO ITEM_VALUE FROM DUA 阅读全文

摘要： 使用REGEXP_SUBSTR SELECT REGEXP_SUBSTR(key, '[^,]+', 1, ROWNUM) AS VALUE FROM ( select '1,3,4,4' as key from dual ) CONNECT BY ROWNUM <= LENGTH(key) - L 阅读全文