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How is the location of the app stored?

Source: Internet
Author: User
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Is that the idea? ：
Because the user location is not fixed, how is the location of the app stored?
"Baidu Takeout" has a "I near the merchant" function;
Is the user's latitude and longitude updated in the database every time the user logs in?
And then I started to calculate the distance when I asked for the merchant list?

Reply content:

Is that the idea? ：
Because the user location is not fixed, how is the location of the app stored?
"Baidu Takeout" has a "I near the merchant" function;
Is the user's latitude and longitude updated in the database every time the user logs in?
And then I started to calculate the distance when I asked for the merchant list?

MSSQL has geography.
MySQL has spatial Data Types

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