MongoDB Add a geo-index

1, synchronization of site information to MONGO (support MySQL, SQL Server data synchronization)

2. Right-click on the document under the Collections folder and select Add Index in the menu.

3. Then the data query {"Mloc": {$near: [23.1455757718471,113.529789947662], $maxDistance: 1000}}

Analytical:

Mloc is a document field and is a collection. The latitude and longitude of sitting punctuation needs to be stored in a collection array.

$maxDistance is the search distance.

The $near is to search the nearest coordinate reference point nearby.

MongoDB Add a geo-index