Microsoft Access SQL嵌套的select语句

Question

如何为访问sql中的select statments形成的表提供临时名称？ 我有这个：

SELECT PUNONJES.[ID_P], PUNONJES.[Emer]
FROM PUNONJES, PUSHIM
WHERE PUNONJES.[ID_P] = PUSHIM.[#ID_P] 
  AND PUSHIM.[Kohezgjatja] > (SELECT AVG(PUSHIM.[Kohezgjatja]) FROM PUSHIM)

我想将上面的选择存储在临时表中，然后让我们说temp，然后在temp表上使用下面的另一个选择，依此类推。怎么做？

Answer 1

单用户情况的一般概要可能是 -

' determine if temp table exists
If DCount("*", "MSYSOBJECTS", "Type = 1 and Name = 'temp'") = 0 Then
    ' temp table does not exist, create it with columns [ID_P] and [Emer]
    ....
EndIf


' empty the table of any prior records
...
"DELETE * From temp;"



' now use your prior sql, wrapped with Insert
INSERT INTO temp
SELECT PUNONJES.[ID_P], PUNONJES.[Emer]
FROM PUNONJES, PUSHIM
WHERE PUNONJES.[ID_P] = PUSHIM.[#ID_P] 
  AND PUSHIM.[Kohezgjatja] > (SELECT AVG(PUSHIM.[Kohezgjatja]) FROM PUSHIM)

对于多用户情况，您需要在行前面加上UserID或一些uniquifier，然后更改Delete和Insert以使用它。