Question

是否可以在Access查询中应用以下条件？

联盟查询未提供全部三个条件

LName, FName 
Where (TourID=14XXX and Status=0) AND 
      (TourID=16XXX and Status=1) AND 
      (TourID=20XXX and Status=1)

仅返回所有三个条件都为真的结果

Answer 1

使用OR代替AND

select LName, FName from tablename
Where (TourID=14XXX and Status=0) OR
      (TourID=16XXX and Status=1) OR
      (TourID=20XXX and Status=1)

Answer 2

我认为您想要汇总：

SELECT LName, FName 
FROM t
WHERE (TourID=14XXX and Status=0) OR 
      (TourID=16XXX and Status=1) OR 
      (TourID=20XXX and Status=1)
GROUP BY LName, FName 
HAVING COUNT(*) = 3;

COUNT(*)假定原始表中没有重复的游览。

SELECT LName, FName 
FROM t
WHERE (TourID=14XXX and Status=0) OR 
      (TourID=16XXX and Status=1) OR 
      (TourID=20XXX and Status=1)
GROUP BY LName, FName 
HAVING SUM(IIF(TourID=14XXX AND Status=0, 1, 0)) > 0 AND
       SUM(IIF(TourID=16XXX and Status=1, 1, 0)) > 0 AND
       SUM(IIF(TourID=20XXX and Status=1, 1, 0)) > 0;

多个SQL查询条件

2 个答案: