ASP构造大数据量的分页SQL语句

1<%@Language = "VBScript" Codepage = "936"%>

2<%

3'分页sql语句生成代码

4Function GetPageSql(TblName,FldName,PageSize,PageIndex,OrderType,StrWhere)

5 Dim StrTemp,StrSql,StrOrder

6 '根据排序方式生成相关代码

7 If OrderType = 0 Then

8 StrTemp = "> (Select Max([" & FldName & "])"

9 StrOrder = " Order By [" & FldName & "] Asc"

10 Else

11 StrTemp = "< (Select Min([" & FldName & "])"

12 StrOrder = " Order By [" & FldName & "] Desc"

13 End If

14

15 '若是第1页则无须复杂的语句

16 If PageIndex = 1 Then

17 StrTemp = ""

18 If StrWhere <> "" Then

19 Strtmp = " Where " & StrWhere

20 End If

21 StrSql = "Select Top " & PageSize & " * From [" & TblName & "]" & Strtmp & StrOrder

22 Else '若不是第1页，构造sql语句

23 StrSql = "Select Top " & PageSize & " * From [" & TblName & "] Where [" & FldName & "]" & StrTemp & _

24 " From (Select Top " & (PageIndex-1) * PageSize & " [" & FldName & "] From [" & TblName & "]"

25 If StrWhere <> "" Then

26 StrSql = StrSql & " Where " & StrWhere

27 End If

28 StrSql = StrSql & StrOrder & ") As Tbltemp)"

29 If StrWhere <> "" Then

30 StrSql = StrSql & " And " & StrWhere

31 End If

32 StrSql = StrSql & StrOrder

33 End If

34 GetPageSql = StrSql '返回sql语句

35End Function

36Response.Write(GetPageSql("Message","MessageID",10,1,0,""))

37%>