mongodb命令---花样查询语句

闲言少叙

查出价格低于200的商品信息----包含商品名称，货物编号，价格，添加信息等

db.goods.find(
{"shop_price":{$lt:200}},
{"shop_price":1,"goods_name":1,"goods_id":1,"add_time":1}
)

 商品分类不为3的商品

db.goods.find(

{"cat_id":{$ne:3}},

{"shop_price":1,"goods_name":1,"goods_id":1,"cat_id":1}

)

价格低于或等于400的商品

db.goods.find(
{"shop_price":{$lte:400}},
{"goods_name":1,"goods_id":1,"shop_price":1,"cat_id":1}
）

 查处价格大于等于100，小于等于500的商品

db.goods.find(
{$and:
 [{"shop_price":{$lte:500}},{"shop_price":{$gte:100}}]   
},
{"goods_name":1,"goods_id":1,"shop_price":1,"cat_id":1}
)

查询不属于栏目3和栏目11的产品用$and

db.goods.find(
{$and:
    [{cat_id:{$ne:3}},{cat_id:{$ne:11}}]
},
{"goods_name":1,"goods_id":1,"shop_price":1,"cat_id":1}
)

查询不属于栏目3和栏目11的产品用$nin

db.goods.find(
{"cat_id":{$nin:[3,11]}},
{"goods_name":1,"goods_id":1,"shop_price":1,"cat_id":1}
)

查询不属于栏目3和栏目11的产品用$nor

db.goods.find(
{$nor:[{cat_id:3},{cat_id:11}]},
{"goods_name":1,"goods_id":1,"shop_price":1,"cat_id":1}
)

取出大于100小于300的商品或者小于5000，大于4000的商品

db.goods.find(
{$or:[
{$and:[{"shop_price":{$lte:300}},{"shop_price":{$gte:100}},]},
{$and:[{"shop_price":{$lt:5000}},{"shop_price":{$gt:4000}},]}
]},
{"goods_name":1,"goods_id":1,"shop_price":1,"cat_id":1}
) 

取出商品编号对5求余等于1的记录

db.goods.find(
{cat_id:{$mod:[5,1]}},
{"goods_name":1,"goods_id":1,"shop_price":1,"cat_id":1}
)

取出分类为3或11的商品

db.goods.find(
{"cat_id":{$in:[3,11]}},
{"goods_name":1,"goods_id":1,"shop_price":1,"cat_id":1}
)