sql = "select top 12 adlinkid ,LEFT(atitle, 15) AS atitle from t8_ad where asortname='打折'and abs='1'and adel='1' order by asdate desc";
DBClass.BindDataList(sql, DataList1);
sql = "select top 12 nlinkid ,LEFT(ntitle, 13) AS ntitle from t8_news order by ndate desc";
DBClass.BindDataList(sql, DataList2);
sql = "select top 12 adlinkid ,LEFT(atitle, 13) AS atitle,asortname from t8_ad where abs='1'and adel='1'and asortname!='打折' order by asdate desc";
DBClass.BindDataList(sql, DataList3);
sql = "select top 12 comid,left(ccname,13) as ccname from t8_company order by csdate desc ";
DBClass.BindDataList(sql, DataList4);

就是
T-SQL

是   

可能跟我解释一下，具体什么意思啊　！

这都需要解释啊？

学CS数据库编程建议去搞本SQL书看好先。这样才会更好，不然边学CS又被SQL的语法什么搞糊就会降低你学习的效率了。