是否可以在MySQL表上執行內聯GROUP BY？

Question

是否可以在單個原子查詢中執行以下行？

CREATE TABLE tmp AS 
(
    SELECT fooId, SUM(amount) AS amount 
    FROM foo 
    GROUP BY fooId 
); 
TRUNCATE TABLE foo; 
INSERT INTO foo (SELECT fooId, amount FROM tmp); 
DROP TABLE tmp; 

Answer 1

我想你想更新表中的總數？嘗試

REPLACE INTO foo (fooID, amount) 
SELECT fooID, sum(Amount) FROM foo