在網路上找資料發現的,但是調試的時候發現有一些問題,
改了一下,還有一定的問題,但可以做一般使用了。
沒有考慮資料類型的問題,還有SQL Server 和access的差別,以後有時間再改進吧,不知道效率怎麼樣。
如果有朋友改進,也麻煩寄一份給我。
<%
'產生SQL字串的類別。
'原作:無名氏
'改進:aloxy
'E-mail:[email protected]
'OICQ:331622229
class SQLString
'************************************
'變數定義
'************************************
'sTableName ---- 表名
'iSQLType ----SQL語句類型:0-增加,1-更新,2-刪除,3-查詢
'sWhere ---- 條件
'sOrder ---- 排序方式
'sSQL ----值
Private sTableName,iSQLType,sWhere,sOrder,sSQL
'******************************** ****
'類別初始化/結束
'************************************
Private Sub Class_Initialize()
sTableName=""
iSQLType=0
sWhere=""
sOrder=""
sSQL=""
End Sub
Private Sub Class_Terminate()
End Sub
'******************************************
'屬性
'************************************
'設定表名的屬性
Public Property Let TableName(value)
sTableName=value
End Property
'設定條件
Public Property Let Where(value)
sWhere=value
End Property
'設定排序方式
Public Property Let Order(value)
sOrder=value
End Property
'設定查詢語句的類型
Public property Let SQLType(value)
iSQLType=value
select case iSQLType
case 0
sSQL="insert into #0 (#1) values (#2)"
case 1
sSQL="update #0 set #1=#2"
case 2
sSQL="delete from #0 "
case 3
sSQL="select #1 from #0 "
end select
End Property
'************************************
'函數
'************************************
'增加欄位(欄位名稱,欄位值)
Public Sub AddField(sFieldName,sValue)
select case iSQLType
case 0
sSQL=replace(sSQL,"#1",sFieldName & ",#1")
sSQL=replace(sSQL,"#2","'" & sValue & "',#2")
case 1
sSQL=replace(sSQL,"#1",sFieldName)
sSQL=replace(sSQL,"#2","'" & sValue & "',#1=#2")
case 3
sSQL=replace(sSQL,"#1",sFieldName & ",#1")
End Select
End Sub
'傳回SQL語句
Public Function ReturnSQL()
sSQL=replace(sSQL,"#0",sTableName)
select case iSQLType
case 0
sSQL=replace(sSQL,",#1","")
sSQL=replace(sSQL,",#2","")
case 1
sSQL=replace(sSQL,",#1=#2","")
case 3
sSQL=replace(sSQL,",#1","")
end Select
if sWhere<>"" and iSQLType<>0 then
sSQL=sSQL & " where " & sWhere
end if
if sOrder<>"" and iSQLType<>0 then
sSQL=sSQL & " order by " & sOrder
end if
ReturnSQL=sSQL
End Function
'清空語句
Public Sub Clear()
sTableName=""
iSQLType=0
sWhere=""
sOrder=""
sSQL=""
End Sub
End class
%>
<%
'下面是呼叫的例子,資料型別的問題請繼續修改上面的類別裡的定義,如果有問題可以問我
set a =new SQLString '建立類別對象
a.TableName=" message " '設定表名為message
'a.where=" issend =9"
'a.order=" issend desc"
a.SQLType=0 '設定查詢類型為增加記錄
a.AddField " incept", "2"
a.AddField " sender ", " 3 "
a.AddField " title ", " 4 "
a.AddField " sender ", "5 "
a.AddField " content ", " 6 "
a.AddField " sendtime ", "7"
a.AddField " flag", 8
a.AddField " issend ", 9
Response.Write a.ReturnSQl
set a=nothing
%>