有个需求要把三个不同表的同一维度的指标取出来。
create table a_test(time varchar,kpi1 int);
INSERT into a_test values('20180315',1);
create table b_test(time varchar,kpi2 int,kpi3 int,kpi4 int);
INSERT into b_test values('20180315',2,3,4);
INSERT into b_test values('20180316',5,6,7);
create table c_test(time varchar,kpi5 int);
INSERT into c_test values('20180315',8);
INSERT into c_test values('20180317',18);
a_test:
b_test:
c_test:
合成d总指标表:
简单连表,希望大家批评指正