怎么提高SQL查询速度(我是用ODBC)连接远程数据库
我们这里用ASP程序编程,用ODBC数据源连接远程数据库,从其数据库里取值,再进行判断,如我们数据库内有远程连接数据库中的记录,就不增加,如果没有就增加进我方数据库.但此时出现ODBC连接超时问题,我用了Server.ScriptTimeOut=360000这个语句也不起作用,远程查询一个表数据,这个表内数据有6万条.
请各位大侠同仁帮帮我

------解决方案--------------------
建议使用以下这个在存储过程（用于分页记录）
CREATE PROCEDURE SelectPageBySingleTable

@tblName varchar(255), -- 表名
@strGetFields varchar(1000) = ' ', -- 需要返回的列
@fldName varchar(255)= ' ', -- 排序的字段名
@PageSize int = 10, -- 页尺寸
@PageIndex int = 1, -- 页码
@doCount bit = 0, -- 返回记录总数, 非 0 值则返回
@OrderType bit = 0, -- 设置排序类型, 非 0 值则降序
@strWhere varchar(1500) = ' ' -- 查询条件 (注意: 不要加 where)

AS

declare @strSQL varchar(5000) -- 主语句
declare @strTmp varchar(110) -- 临时变量
declare @strOrder varchar(400) -- 排序类型


if @doCount != 0 begin

if @strWhere != ' '
set @strSQL = "select count(*) as Total from [ " + @tblName + "] where "+@strWhere
else
set @strSQL = "select count(*) as Total from [ " + @tblName + "] "

end else begin

if @OrderType != 0 begin
set @strTmp = " <(select min "
set @strOrder = " order by [ " + @fldName + "] desc "
--如果@OrderType不是0，就执行降序，这句很重要！
end else begin
set @strTmp = "> (select max "
set @strOrder = " order by [ " + @fldName + "] asc "
end

if @PageIndex = 1 begin
if @strWhere != ' '
set @strSQL = "select top " + str(@PageSize) + " "+@strGetFields+ " from [ " + @tblName + "] where " + @strWhere + " " + @strOrder

else
set @strSQL = "select top " + str(@PageSize) + " "+@strGetFields+ " from [ "+ @tblName + "] "+ @strOrder
--如果是第一页就执行以上代码，这样会加快执行速度
end else begin
--以下代码赋予了@strSQL以真正执行的SQL代码

set @strSQL = "select top " + str(@PageSize) + " "+@strGetFields+ " from [ "
+ @tblName + "] where [ " + @fldName + "] " + @strTmp + "([ "+ @fldName + "]) from (select top " + str((@PageIndex-1)*@PageSize) + " [ "+ @fldName + "] from [ " + @tblName + "] " + @strOrder + ") as tblTmp) "+ @strOrder

if @strWhere != ' '

set @strSQL = "select top " + str(@PageSize) + " "+@strGetFields+ " from [ "
+ @tblName + "] where [ " + @fldName + "] " + @strTmp + "([ "
+ @fldName + "]) from (select top " + str((@PageIndex-1)*@PageSize) + " [ "
+ @fldName + "] from [ " + @tblName + "] where " + @strWhere + " "
+ @strOrder + ") as tblTmp) and " + @strWhere + " " + @strOrder

end
end
print @strSQL
exec (@strSQL)
GO