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主頁 > 知識庫 > 一個改進的ASP生成SQL命令字符串類的代碼[已測]

一個改進的ASP生成SQL命令字符串類的代碼[已測]

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復制代碼 代碼如下:

%
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
'修改的返回字符串值的函數
'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
'返回SQL語句
Public Function ReturnSQL1()
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
%>
調用例子:
%
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 ", "#"now"#"
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
%>
%
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 ", "#"now"#"
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
%>
%
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 ", "#"now"#"
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
%>

標簽:來賓 迪慶 滁州 甘南 唐山 淮北 揭陽 南寧

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