網上找資料發現的,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,但是可以做一般使用了。
沒有考慮數據類型的問題,還有SQL Server 和Access的區別,以後有時間再改進吧,不知道效率怎麼樣。
如果有朋友改進,也麻煩給我發一份。
<%
'生成SQL字符串的類。
'原作:無名氏
'改進:aloxy
'E-mail:[email protected]
'OICQ:331622229
class SQLString
'************************************
'變量定義
'************************************
'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
'************************************
'設置表名的屬性
Public Property Let TableName(value)
sTableName=value
End Property
'設置條件
Public Property Let Where(value)
sWhere=value
End Property
'設置排序方式
Public Property Let Order(value)
sOrder=value
End Property
'設置查詢語句的類型
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
'************************************
'增加字段(字段名稱,字段值)
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
'返回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
%>
<%
'下面是調用的例子,數據類型的問題請繼續修改上面的類裡的定義,如果有問題可以問我
set a =new SQLString '創建類對象
a.TableName=" message " '設置表名為message
'a.where=" issend =9"
'a.order=" issend desc"
a.SQLType=0 '設置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
%>