SQL Quiz #4 정보
SQL Quiz #4본문
CREATE TABLE code_t (
S integer,
E integer,
V1 integer,
V2 float);
INSERT INTO code_t (s, e, v1, v2) values (0, 100, 410, 60.7);
INSERT INTO code_t (s, e, v1, v2) values (100, 200, 910, 125.9);
INSERT INTO code_t (s, e, v1, v2) values (200, 300, 1600, 187.9);
INSERT INTO code_t (s, e, v1, v2) values (300, 400, 3850, 280.6);
INSERT INTO code_t (s, e, v1, v2) values (400, 500, 7300, 417.7);
INSERT INTO code_t (s, e, v1, v2) values (500, 9999, 12940, 709.5);
CREATE TABLE use_t (
id integer,
KWH Integer
);
INSERT INTO use_t (id, kwh) values (1, 90);
INSERT INTO use_t (id, kwh) values (2, 120);
INSERT INTO use_t (id, kwh) values (3, 240);
INSERT INTO use_t (id, kwh) values (4, 360);
INSERT INTO use_t (id, kwh) values (5, 480);
INSERT INTO use_t (id, kwh) values (6, 600);
select * from code_t;
select * from use_t;
시작 끝 기본요금 전력요금
각 아이디별 전력요금은
1. 90Kwh는 410+60.7*90 = 5870
2. 120Kwh는 910 + 60.7*100 + 125.9*20 =9498 인데 10원 아래는 버림 그래서 9490
3. 240kwh, 27770
4. 360kwh, 58130
5. 480kwh, 106220
6. 600kwh, 191170
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