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你好，如果格式都如你贴图的一样的话可以用这种最笨的方式全一个个化成数值型，然后相加取值。
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select CHECK_NORM,
(to_number(substr(CHECK_INFO, 1, 4)) +
to_number(substr(CHECK_INFO, 6, 4)) +
to_number(substr(CHECK_INFO, 11, 4)) +
to_number(substr(CHECK_INFO, 16, 4)) +
to_number(substr(CHECK_INFO, 21, 4)) +
to_number(substr(CHECK_INFO, 26, 4)) +
to_number(substr(CHECK_INFO, 31, 4)) +
to_number(substr(CHECK_INFO, 36, 4)) +
to_number(substr(CHECK_INFO, 41, 4)) +
to_number(substr(CHECK_INFO, 46, 4))) / 10
from 表名;
如果格式不统一，建议如2楼的，把字符型中的‘/’全部替换成‘+’，然后拼接出来一个sql，执行处理。
望采纳，谢谢。
可以参考如下：
CREATE TABLE TEMP_AVG_SCORE
(T_DATA DATE,
T_NAME VARCHAR2(10),
T_SCORE NUMBER(10)
) ;
INSERT INTO TEMP_AVG_SCORE VALUES (TO_DATE('2015-01-01','YYYY-MM-DD'),'A',30) ;
INSERT INTO TEMP_AVG_SCORE VALUES (TO_DATE('2015-01-10','YYYY-MM-DD'),'A',40) ;
INSERT INTO TEMP_AVG_SCORE VALUES (TO_DATE('2015-01-15','YYYY-MM-DD'),'A',35) ;
INSERT INTO TEMP_AVG_SCORE VALUES (TO_DATE('2015-02-01','YYYY-MM-DD'),'B',120) ;
INSERT INTO TEMP_AVG_SCORE VALUES (TO_DATE('2015-02-10','YYYY-MM-DD'),'B',130) ;
INSERT INTO TEMP_AVG_SCORE VALUES (TO_DATE('2015-02-15','YYYY-MM-DD'),'B',150) ;
INSERT INTO TEMP_AVG_SCORE VALUES (TO_DATE('2015-02-20','YYYY-MM-DD'),'B',140) ;
COMMIT;
SELECT T.T_NAME 人员,
AVG(CASE
WHEN TO_CHAR(T.T_DATA, 'MM') = '01' AND T.NUM = 3 THEN
CASE
WHEN RN = 1 THEN
T.T_SCORE * 120 / 100
WHEN RN = 2 THEN
T.T_SCORE * 100 / 100
ELSE
T.T_SCORE * 80 / 100
END
WHEN TO_CHAR(T.T_DATA, 'MM') = '01' AND T.NUM = 4 THEN
CASE
WHEN RN = 1 THEN
T.T_SCORE * 120 / 100
WHEN RN = 2 THEN
T.T_SCORE * 110 / 100
WHEN RN = 3 THEN
T.T_SCORE * 90 / 100
ELSE
T.T_SCORE * 80 / 100
END
ELSE 0
END) 一月份,
AVG(CASE
WHEN TO_CHAR(T.T_DATA, 'MM') = '02' AND T.NUM = 3 THEN
CASE
WHEN RN = 1 THEN
T.T_SCORE * 120 / 100
WHEN RN = 2 THEN
T.T_SCORE * 100 / 100
ELSE
T.T_SCORE * 80 / 100
END
WHEN TO_CHAR(T.T_DATA, 'MM') = '02' AND T.NUM = 4 THEN
CASE
WHEN RN = 1 THEN
T.T_SCORE * 120 / 100
WHEN RN = 2 THEN
T.T_SCORE * 110 / 100
WHEN RN = 3 THEN
T.T_SCORE * 90 / 100
ELSE
T.T_SCORE * 80 / 100
END
ELSE
END) 二月
FROM (SELECT A.T_DATA,
A.T_NAME,
A.T_SCORE,
ROW_NUMBER() OVER(PARTITION BY A.T_NAME ORDER BY A.T_DATA DESC) RN,
B.NUM
FROM temp_avg_score A
LEFT JOIN (SELECT T_NAME, COUNT(1) NUM
FROM temp_avg_score
GROUP BY T_NAME) B ON A.T_NAME = B.T_NAME) T
GROUP BY T.T_NAME;
select MG_ID,trunc(TIME,'dd') statDay,avg(FEED_IN_POWER) feedAvg from tableName group by MG_ID,trunc(TIME,'dd')