ASP构造大数据量的分页SQL语句

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

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<%

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'分页sql语句生成代码

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

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Dim StrTemp,StrSql,StrOrder

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'根据排序方式生成相关代码

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If OrderType = 0 Then

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

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

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Else

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

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

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End If

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'若是第1页则无须复杂的语句

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If PageIndex = 1 Then

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StrTemp = ""

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If StrWhere <> "" Then

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Strtmp = " Where " & StrWhere

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End If

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

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Else '若不是第1页，构造sql语句

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

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

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If StrWhere <> "" Then

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StrSql = StrSql & " Where " & StrWhere

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End If

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

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If StrWhere <> "" Then

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StrSql = StrSql & " And " & StrWhere

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End If

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StrSql = StrSql & StrOrder

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End If

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GetPageSql = StrSql '返回sql语句

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End Function

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

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%>

 

 

 

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