发布于 2015-09-14 14:58:16 | 142 次阅读 | 评论: 0 | 来源: 网络整理
Syntax: {field: {$gte: value} }
$gte selects the documents where the value of the field is greater than or equal to (i.e. >=) a specified value (e.g. value.)
Consider the following example:
db.inventory.find( { qty: { $gte: 20 } } )
This query would select all documents in inventory where the qty field value is greater than or equal to 20.
Consider the following example which uses the $gte operator with a field from an embedded document:
db.inventory.update( { "carrier.fee": { $gte: 2 } }, { $set: { price: 9.99 } } )
This update() operation will set the value of the price field that contain the embedded document carrier whose``fee`` field value is greater than or equal to 2.