MySQL实训_03

 

 

--  CREATE DATABASE DB1;
--  USE DB1;
--  
--  create table a1(LOAN_NO INT,
--                 ID_NO INT,
--                 ACTV_DT DATE);
-- 
-- 
-- create table a2(LOAN_NO INT,
--                 OD_DAYS INT);
--     
-- create table a3(ID_NO INT,
--                 LIM INT,
--                 OUTSTANDING INT);
-- 
--  insert into a1 values(1000114260,1,'2011-06-07'),
-- 					  (1000143723,2,'2011-09-21'),
--                       (1000162024,3,'2011-12-09'),
--                       (1000174934,4,'2012-03-23'),
--                       (1000182256,5,'2012-05-15');
--                       
--  insert into a2 values(1000114260,90),
--                       (1000174934,16),
--                       (1000182256,0),
-- 					  (1000143723,45),
--                       (1000162024,3);
-- 
-- insert into a3 values( 5,30000,25110),
--                      (2,40000,40000),
--                      (2,60000,56000),
--                      (2,45000,45000),
--                      (1,15000,6378),
--                      (1,80000,60395),
--                      (3,60000,57773),
--                      (4,30000,28656),
--                      (4,30000,10000);
--                      
select a1.LOAN_NO,a1.ID_NO,ACTV_DT,OD_DAYS,
       IF(OD_DAYS=0,'CURRENT',IF(OD_DAYS>=90,'CHRGO','MIDDLE')) AS TYPE,
       SUM(LIM),sum(OUTSTANDING) FROM a1 left join a2 on a1.LOAN_NO = a2.LOAN_NO
	   left join a3 on a1.ID_NO = a3.ID_NO
       GROUP BY a1.LOAN_NO;