訪問表達式

Question

我會收集我的IIF或表切換表達式作爲一個記錄（更超過40PCS）：

tbl_filter：

過濾

Description LIKE '*SCREW*',"Screw" 

Description LIKE '*SOCKET*',"SScrew" 

我怎樣使用這個表達式集合tbl_filter在查詢中的切換函數中？

類似這樣的：

SELECT Item, switch(Select * from tbl_Filter) AS Cathegory FROM tbl_Materials 

感謝您的幫助提前

Answer 1

我想你的意思是這樣的下面。

tbl_Filter

Contains Filter 
Screw  Screw 
Socket  Sscrew 

tbl_Main

Description 
Screws and sockets 
Screw 
Socket 

查詢SQL

SELECT tbl_Main.Description, tbl_Filter.Filter 
FROM tbl_Main, tbl_Filter 
WHERE tbl_Main.Description Like "*" & [Contains] & "*" 

結果

Description   Filter 
Screws and sockets Screw 
Screws and sockets Sscrew 
Screw    Screw 
Socket    Sscrew