比较来自2个表SQL的数据

Question

帮助我成为新手。我正在尝试提取可能在一个表中但不在另一个表中的数据。

这将返回相同信息的多行。

SELECT DISTINCT *
FROM Schools, Schools_Current
WHERE ([Schools].[School_ID]<>[Schools_Current].[School_ID]);

Answer 1

你可以试试这个：

SELECT DISTINCT * 
FROM Schools_Current
WHERE School_ID NOT IN (
  SELECT School_ID
  FROM Schools
)