MySQL查詢+ ASP的if else end如果

Question

例子：

Sql = "Select * From tablo Where Baslik = "&strBaslik&" And Ozellik IN ("&strOzellik&") Order By Id Desc" 

我想：

Sql = "Select * From tablo Where Baslik = "&strBaslik&" **IF Not "&strOzellik&" = Then** And Ozellik IN ("&strOzellik&") **End IF** Order By Id Desc" 

我該怎麼辦呢？

謝謝。

Answer 1

有幾種方法來解決這個問題，其中之一是連接的sSql查詢：

<% 
sSql = "Select * From tablo Where Baslik = '"& strBaslik & "' " 
If Not strOzellik = "???" Then 
    sSql = sSql & " And Ozellik IN ('" & strOzellik & "')" 
End If 
sSql = sSql & " Order By Id Desc" 
%> 

請注意，我還添加了周圍的情況下，你的SQL參數單引號的投入實際上是字符串。雖然，這種方式並不安全，因爲SQL注入，你可能想看看parameterized queries。