适用对象：
MongoDB vCore
运算符 $lte 用于匹配字段值小于或等于指定值的文档。 运算符 $lte 基于数字、日期或其他可比较字段筛选文档。
语法
使用运算符的 $lte 语法为：
{
"field": { "$lte": value }
}
参数
| 参数 | DESCRIPTION |
|---|---|
field |
要比较的字段 |
value |
要与之比较的值 |
例子
请查看 StoreData 数据库中 stores 集合的这个示例文档。
{
"_id": "0fcc0bf0-ed18-4ab8-b558-9848e18058f4",
"name": "First Up Consultants | Beverage Shop - Satterfieldmouth",
"location": {
"lat": -89.2384,
"lon": -46.4012
},
"staff": {
"totalStaff": {
"fullTime": 8,
"partTime": 20
}
},
"sales": {
"totalSales": 75670,
"salesByCategory": [
{
"categoryName": "Wine Accessories",
"totalSales": 34440
},
{
"categoryName": "Bitters",
"totalSales": 39496
},
{
"categoryName": "Rum",
"totalSales": 1734
}
]
},
"promotionEvents": [
{
"eventName": "Unbeatable Bargain Bash",
"promotionalDates": {
"startDate": {
"Year": 2024,
"Month": 6,
"Day": 23
},
"endDate": {
"Year": 2024,
"Month": 7,
"Day": 2
}
},
"discounts": [
{
"categoryName": "Whiskey",
"discountPercentage": 7
},
{
"categoryName": "Bitters",
"discountPercentage": 15
},
{
"categoryName": "Brandy",
"discountPercentage": 8
},
{
"categoryName": "Sports Drinks",
"discountPercentage": 22
},
{
"categoryName": "Vodka",
"discountPercentage": 19
}
]
},
{
"eventName": "Steal of a Deal Days",
"promotionalDates": {
"startDate": {
"Year": 2024,
"Month": 9,
"Day": 21
},
"endDate": {
"Year": 2024,
"Month": 9,
"Day": 29
}
},
"discounts": [
{
"categoryName": "Organic Wine",
"discountPercentage": 19
},
{
"categoryName": "White Wine",
"discountPercentage": 20
},
{
"categoryName": "Sparkling Wine",
"discountPercentage": 19
},
{
"categoryName": "Whiskey",
"discountPercentage": 17
},
{
"categoryName": "Vodka",
"discountPercentage": 23
}
]
}
]
}
示例 1：检索总销售额小于或等于 $35,000 的所有商店
db.stores.find({ "sales.totalSales": { "$lte": 35000 } }, {"_id": 1}, {"limit": 1})
这会返回以下结果：
{
"_id": "e6895a31-a5cd-4103-8889-3b95a864e5a6"
}
示例 2：查找具有 12 名或更少全职员工的商店
db.stores.find({ "staff.totalStaff.fullTime": { "$lte": 12 } }, {"name": 1, "staff.totalStaff.fullTime": 1}, {"limit": 1})
这会返回以下结果：
{
"_id": "e6895a31-a5cd-4103-8889-3b95a864e5a6",
"name": "VanArsdel, Ltd. | Picture Frame Store - Port Clevelandton",
"staff": { "totalStaff": { "fullTime": 6 } }
}