oracle sum(col1) over(partition by col2 order by col3):實現分組遞增彙總

應公司業務要求，需要對數據進行分組彙總做輔助列進行查詢

所以使用到了sum(col1) over(partition by col2 order by col3)函數，為了學習與提高在此進行記錄。

1、準備數據源

CREATE TABLE TEST01 (
  NAME  VARCHAR(20),
  DEP_NO VARCHAR(10),
  SALARY  NUMBER(20,2)            
);

2、插入數據

INSERT INTO TEST01(NAME,DEP_NO,SALARY) VALUES('張三','0010',12000);
INSERT INTO TEST01(NAME,DEP_NO,SALARY) VALUES('李四','0010',12500);
INSERT INTO TEST01(NAME,DEP_NO,SALARY) VALUES('王五','0020',13000);
INSERT INTO TEST01(NAME,DEP_NO,SALARY) VALUES('趙六','0020',11000);
INSERT INTO TEST01(NAME,DEP_NO,SALARY) VALUES('田七','0020',10000);
INSERT INTO TEST01(NAME,DEP_NO,SALARY) VALUES('如花','0030',8000);
INSERT INTO TEST01(NAME,DEP_NO,SALARY) VALUES('阿卡','0030',9000);
INSERT INTO TEST01(NAME,DEP_NO,SALARY) VALUES('似玉','0030',9500);
INSERT INTO TEST01(NAME,DEP_NO,SALARY) VALUES('撒人','0030',8800);
INSERT INTO TEST01(NAME,DEP_NO,SALARY) VALUES('三忍','0030',6000);
INSERT INTO TEST01(NAME,DEP_NO,SALARY) VALUES('三舞','0030',6600);

3、進行查詢

SELECT T.NAME
             ,T.SALARY
             ,T.DEP_NO
             ,SUM(T.SALARY) OVER(PARTITION BY T.DEP_NO ORDER BY T.NAME)
   FROM TEST01 T;

　　查詢結果如下圖：

這裡對DEP_NO進行分組，根據NAME進行排序，然後統計每組遞增彙總結果！