Get the Polygon of any City and store it in MySql

How to get polygon of any city or state in the world and save it in MySql table

1- Enter this url and search for any city https://nominatim.openstreetmap.org

2- Click on "details" button on the left side of your screen

3- Scroll down and look for relation number (looks like this ==> 3242293)

4- Now, Open this url and paste the relation number http://polygons.openstreetmap.fr/index.py

5- Choose GeoJSON format

Inserting a polygon to MySql

1- Prepare the polygon, Use the following format

{
  “type” : “Polygon”,
  “coordinates” [[
    [xx ,xx],
    [xx ,xx],
    ...
    ..
  ]]
}

*Note: I use jaysoon app in macOS to read and modify JSON easily. Download jayson: https://itunes.apple.com/us/app/jayson-visual-json-editor/id1189824719?mt=12

2- Store JSON inside a text column.

3- Assuming your column is called bounds and table is cities,You can read it as follows: