分页情况

标签：数据库分页语句

<%

DBHelper db = DBHelper.getInstance();

Long sid=Common.getLong(SessionTools.currentWebsite(request).get("id"));

Map obj = new HashMap();

//获取当前页

String catId = Common.getString(request,"catId",true);

Map newObj = new HashMap();

if(catId==null||"".equals(catId)){

newObj = db.map("SELECT TOP 1 cat.id id,data.field3 field3 FROM wcm_cms_news_cat cat INNER JOIN wcm_common_universal_data data on  cat.id=data.data_id WHERE cat.sid =? AND cat.is_show = 1 ORDER BY cat.orderno ASC, cat.id DESC",new Object[]{sid});

}else{

newObj = db.map("SELECT cat.id id, data.field3 field3 FROM wcm_cms_news_cat cat INNER JOIN wcm_common_universal_data data ON cat.id = data.data_id WHERE cat.id=? AND cat.is_show = 1",new Object[]{catId});

}

if(newObj!=null){

String field3=Common.getString(newObj.get("field3")); //举办时间

obj.put("y1",field3.substring(0,1));

obj.put("y2",field3.substring(1,2));

obj.put("y3",field3.substring(2,3));

obj.put("y4",field3.substring(3,4));

obj.put("y5",field3.substring(5));

String newId = Common.getString(newObj.get("id")); 

catId = newId;

obj.put("newObj",newObj);

}

//取上一年

Map preObj = db.map("WITH temp AS(SELECT row_number()OVER(ORDER BY orderno asc,id DESC)row_number,* FROM wcm_cms_news_cat WHERE is_show = 1 AND sid =?)SELECT * FROM temp WHERE row_number =( SELECT row_number - 1 FROM temp WHERE id =?)",new Object[]{sid,catId});

if(preObj!=null){

obj.put("preObj",preObj);

}

//下一年

Map nextObj = db.map("WITH temp AS(SELECT row_number()OVER(ORDER BY orderno asc,id DESC)row_number,* FROM wcm_cms_news_cat WHERE is_show = 1 AND sid =?)SELECT * FROM temp WHERE row_number =( SELECT row_number + 1 FROM temp WHERE id =?)",new Object[]{sid,catId});

if(nextObj!=null){

obj.put("nextObj",nextObj);

}

jspContext.setAttribute("obj",obj);

%>

分页情况

标签：数据库分页语句

原文地址：http://8648389.blog.51cto.com/8638389/1641524