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https://github.com/ConnectedHumber/Air-Quality-Web
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Upgrade ST_DISTANCE() to ST_DISTANCE_SPHERE(), but there's a permissions issue.
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3 changed files with 6 additions and 3 deletions
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@ -5,6 +5,9 @@ This is the changelog for the air quality web interface and its associated HTTP
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- `[Code]` refers to internal changes to the code that have no direct impact on the web interface or the HTTP API, but are significant enough to warrant note.
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- `[Docs]` refers to changes to the [documentation](https://aq.connectedhumber.org/__nightdocs/00-Welcome.html).
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## v0.12-dev
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- [API] Improve accuracy of `distance_calc` for the `list-devices-near` action by using _Haversine's Formula_.
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## v0.11.1 - 22nd June 2019
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- Drastically improve the performance of the backend SQL queries that power the heatmap and device graphs by over 35x in some cases!
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- For users of the HTTP API, said queries are `fetch-data` and `device-data`.
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@ -125,10 +125,10 @@ class MariaDBDeviceRepository implements IDeviceRepository {
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{$s("table_name")}.{$s("column_device_name")} AS name,
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{$s("table_name")}.{$s("column_lat")} AS latitude,
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{$s("table_name")}.{$s("column_long")} AS longitude,
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ST_DISTANCE(POINT(:latitude, :longitude), {$s("table_name")}.{$s("column_point")}) AS distance_calc
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ST_DISTANCE_SPHERE(POINT(:latitude, :longitude), {$s("table_name")}.{$s("column_point")}) AS distance_calc
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FROM {$s("table_name")}
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WHERE {$s("table_name")}.{$s("column_point")} IS NOT NULL
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ORDER BY ST_DISTANCE(POINT(:latitude_again, :longitude_again), {$s("table_name")}.{$s("column_point")})
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ORDER BY ST_DISTANCE_SPHERE(POINT(:latitude_again, :longitude_again), {$s("table_name")}.{$s("column_point")})
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LIMIT :count;", [
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"latitude" => $lat,
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"longitude" => $long,
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2
version
2
version
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@ -1 +1 @@
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v0.11.1
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v0.12-dev
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