多維度下進行行列轉換，下面的行列轉換時根據客戶，所屬銀行機構進行的行列轉換。

-----------------建表 CREATE TABLE CUST_BANK_INFO (CUST_ID VARCHAR(10),CUST_NAME VARCHAR(100),BANK_NO VARCHAR(100),BANK VARCHAR(100),MONEY_TYPE_NO VARCHAR(100),MONEY_TYPE VARCHAR(100),MONEY INT );INSERT INTO CUST_BANK_INFO VALUES('C001','允賢','B01','中國銀行','MT01','理財',10000); INSERT INTO CUST_BANK_INFO VALUES('C002','李四','B01','中國銀行','MT02','貸款',20390); INSERT INTO CUST_BANK_INFO VALUES('C003','王五','B01','中國銀行','MT03','存款',29301); INSERT INTO CUST_BANK_INFO VALUES('C004','陳六','B01','中國銀行','MT04','教育儲蓄',10000); INSERT INTO CUST_BANK_INFO VALUES('C001','允賢','B02','中國銀行','MT01','理財',20000); INSERT INTO CUST_BANK_INFO VALUES('C005','JACK','B02','工商銀行','MT05','理財',10001); INSERT INTO CUST_BANK_INFO VALUES('C006','王三','B02','工商銀行','MT06','貸款',10002); INSERT INTO CUST_BANK_INFO VALUES('C007','劉六','B02','工商銀行','MT07','存款',10003); INSERT INTO CUST_BANK_INFO VALUES('C008','鄭七','B02','工商銀行','MT08','教育儲蓄',10004);
SELECT * FROM CUST_BANK_INFO 查詢結果如下：

--DELETE FROM CUST_BANK_INFO DROP TABLE Mapping; CREATE TABLE Mapping (CN_NAME VARCHAR(100),Code_L VARCHAR(10),Code_N VARCHAR(10) ) INSERT INTO Mapping values('理財','MT01','BANK_01'); INSERT INTO Mapping values('理財','MT05','BANK_01'); INSERT INTO Mapping values('貸款','MT02','BANK_02'); INSERT INTO Mapping values('貸款','MT06','BANK_02'); INSERT INTO Mapping values('存款','MT03','BANK_03'); INSERT INTO Mapping values('存款','MT07','BANK_03'); INSERT INTO Mapping values('教育儲蓄','MT04','BANK_04'); INSERT INTO Mapping values('教育儲蓄','MT08','BANK_04');SELECT CUST_ID,CUST_NAME,BANK_NO,BANK, max(CASE WHEN B.Code_N='BANK_01' THEN MONEY ELSE '0' END) AS 理財, max(CASE WHEN B.Code_N='BANK_02' THEN MONEY ELSE '0' END) AS 貸款, max(CASE WHEN B.Code_N='BANK_03' THEN MONEY ELSE '0' END) AS 存款, max(CASE WHEN B.Code_N='BANK_04' THEN MONEY ELSE '0' END) AS 教育儲蓄 FROM CUST_BANK_INFO A LEFT JOIN MAPPING B ON A.MONEY_TYPE_NO=B.Code_L group by CUST_ID,CUST_NAME,BANK,BANK_NO

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查詢結果如下：

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轉載于:https://www.cnblogs.com/OliverQin/p/5344659.html

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