madurapa / sri-lanka-provinces-districts-cities

Download Sri Lanka Provinces Districts Cities Postal Codes Database

Sri Lanka Provinces Districts Cities Database

About

This is a MySQL version of Sri Lankan Provinces => Districts => Cities, and related data. Each city has longitude, latitude, and postal code (postcode) other than its name.

Data Errors

If you discover wrong translations or any other issues, please use the issue tracker to mention or send a pull request with the changes.

There are three SQL files,

1. provinces.sql (Names of nine provinces)
2. districts.sql (All districts related to each province)
3. cities.sql (All cities related to each district)

Updates

• July 18, 2016 - Changed the structure of cities table ability to add sub-city names.
• April 25, 2022 - Completed translations in all three languages.

Statistics

• Provinces - 9
• Districts - 25
• Cities - 2154

Sample tables structure with data

Provinces

id	name_en	name_si	name_ta
1	Western	බස්නාහිර	மேல
2	Central	මධ්‍යම	மத்தி

Districts

id	province_id	name_en	name_si	name_ta
1	6	Ampara	අම්පාර	அம்பாறை
2	8	Anuradhapura	අනුරාධපුරය	அனுராதபுரம்

Cities

id	district_id	name_en	name_si	name_ta	sub_name_en	sub_name_si	sub_name_ta	postcode	latitude	longitude
338	5	Colombo 8	කොළඹ 8	கொழும்பு 8	Borella	බොරැල්ල	பொறளை	00800	6.914722	79.877778
376	5	Colombo 6	කොළඹ 6	கொழும்பு 6	Wellawatta	වැල්ලවත්ත	வெள்ளவத்தை	00600	6.874657	79.860483

Installation

To prevent unnecessary errors from occurring, start to import or execute provinces.sql, then districts.sql, and lastly cities.sql

Usage

Advantages of latitude and longitude

• Integrate with Google Maps or any map-related service to show the exact place of the city on the map.
• Find locations within a certain radius of a given latitude/longitude.

Find nearby locations using the Haversine formula

Here's the SQL statement that will find the closest locations within a radius of 25 kilometers to the 7.358849, 81.280133 coordinate. It calculates the distance based on the latitude/longitude of that row and the target latitude/longitude and then asks for only rows where the distance value is less than 25, ordering the whole query by distance.

SELECT id, name_en, name_si, name_ta, (6371 * ACOS(COS(RADIANS(7.358849)) * COS(RADIANS(latitude)) * COS(RADIANS(longitude) - RADIANS(81.280133)) + SIN(RADIANS(7.358849)) * SIN(RADIANS(latitude)))) AS distance
FROM cities
HAVING distance < 25
ORDER BY distance

The above assumes that you have distance in kilometers. If distance is in miles then replace 6371 with 3959.

References:

• https://en.wikipedia.org/wiki/Haversine_formula
• https://stackoverflow.com/questions/574691/mysql-great-circle-distance-haversine-formula

Note

• This free database does not guarantee the complete list of cities in Sri Lanka.
• Feel free to contribute to the project.

Translation status

Provinces

සිංහල	தமிழ
100%	100%

Districts

සිංහල	தமிழ
100%	100%

Cities

සිංහල	தமிழ
100%	100%