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CREATE TABLE internet(pur_date date, im VARCHAR(100),skd int,price int); INSERT INTO internet(pur_date,im,skd,price) VALUES('2021-02-02','ZOOSHOP',1,5000), ('2021-02-04','ZOOSHOP',1,5000), ('2021-02-05','ZOOSHOP',2,3700), ('2021-02-08','ZOOSHOP',2,3700), ('2021-02-09','ZOOSHOP',3,1500), ('2021-02-13','PROMARKET',1,5000), ('2021-02-14','PROMARKET',4,2200); SELECT (SELECT SUM(price) FROM internet WHERE pur_date <= T1.pur_date) COSTS FROM INTERNET T1 ORDER BY im, pur_date OFFSET 1 ROWS FETCH NEXT 1 ROWS ONLY;

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