在SQL中,可以通過(guò)使用JOIN操作和WHERE子句來(lái)比較兩張表的差異。以下是一種常見(jiàn)的方法:
SELECT table1.*
FROM table1
LEFT JOIN table2 ON table1.key = table2.key
WHERE table2.key IS NULL;
SELECT table2.*
FROM table1
RIGHT JOIN table2 ON table1.key = table2.key
WHERE table1.key IS NULL;
SELECT *
FROM table1
FULL JOIN table2 ON table1.key = table2.key
WHERE table1.key IS NULL OR table2.key IS NULL;
通過(guò)以上方法,可以找出兩張表之間的差異并進(jìn)行比較。