MongoDB中如何实现分页显示
MongoDB中数据的分页显示也是一种符合大数据要求的操作功能:
skip(n):表示跨越多少数据行;
limit( n):取出数据行数的限制。
示例:分页显示(第一页,skip(0),limit(5))
> db.emp.find().skip(0).limit(5)。 sort({"age":-1}).pretty();
{
"_id" : ObjectId("599108423268c8e84253be2c"),
"name" : "郑琪",< br/> "性别": "女",
"年龄": 50,
"sal": 4700,
"loc": "成都"
}
{
"_id" : ObjectId("599108423268c8e84253be28"),
"姓名" : "孙三",
"性别" : "男",
"年龄" : 40、
"sal" : 2000,
"loc" : "深圳"
}
{
"_id": ObjectId("599148bf0184ff511bf02b95"),
"姓名": "林E",
"性别": "男",
"年龄": 40 ,
SAL":8000,
LOC":"北京",
课程":[
"中文",
"政治"
“年龄”:70,
工作“:”工人“
},
{
"名字" : "林娥妈妈",
"年龄" : 68,
"工作" : "导演"
/>}
{
{
{
{
{
{
/> "_id" : ObjectId("599108433268c8e84253be2d"),
"姓名" : "混蛋",
"性别" : "男",
"年龄" : 35,
"sal" : 8000,
"loc" : "北京"
}
{
"_id" : ObjectId("599129a00184ff511bf02b87 "),
"姓名" : "刘A",
"性别" : "男",
"年龄" : 35,
/> "sal" : 8000,
"loc" : "北京",
"课程" : [
"语文",
"数学",
"英语",
"音乐",
"政治"
(5), limit(5))
> db.emp.find().skip(5).limit (5).sort({"age":-1}).pretty();
{
"_id": ObjectId("599129a00184ff511bf02b88"),
"name": "刘B",
"性别": "男",
"年龄": 35,
"sal": 8000,
"loc": "北京",
。 ObjectId("599129a00184ff511bf02b89"),
"姓名" : "刘C",
"性别" : "男",
"年龄" : 35,
"萨尔" : 8000,
"loc" : "北京g",
"课程" : [
bsp; "语文",
"数学",
"英语"
]
}
{
"_id" : ObjectId("599129a00184ff511bf02b8a ") ,
"姓名": "刘D",
"性别": "男",
"年龄": 35,
"sal": 8000,
"loc" : "北京",
"course" : [
"语文",
"数学",< br/> "政治"
]
}
{
"_id": ObjectId("599129a20234ff511bf02b8b"),
"name" : "刘娥",< br/> "性别" : "男",
"年龄" : 35,
"sal" : 8000,
"loc" : "北京", "政治"
" ]
}
{
"_id" : ObjectId("599148bd0184ff511bf02b93"),
"姓名" : "林 C",
"性别" : "男",
"年龄" : 35,
"sal" : 8000,
"loc" : "北京",
"课程" : [
"中文" ,
“数学”,
“英语”
"父母": [
" : 60,
"job" : "工人"
"name" : "林C的妈妈",
“年龄”:59,
"工作": ""员工"
。
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4. 编程技术 > MongoDB中如何实现分页显示