在SQL中,可以通过使用JOIN操作和WHERE子句来比较两张表的差异。以下是一种常见的方法:
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;
通过以上方法,可以找出两张表之间的差异并进行比较。
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