Add Basic Aggregation Sql queries

Author: alexprut

README.md

@@ -1,7 +1,7 @@
 <div align="center">
 <img src="https://github.com/alexprut/HackerRank/raw/master/hackerrank-logo.png" width="450" height="auto"/>
 
-[![Solutions](https://img.shields.io/badge/solutions-428-green.svg?style=flat-square)](https://github.com/alexprut/HackerRank#table-of-contents)
+[![Solutions](https://img.shields.io/badge/solutions-434-green.svg?style=flat-square)](https://github.com/alexprut/HackerRank#table-of-contents)
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 [![MIT](https://img.shields.io/dub/l/vibe-d.svg?style=flat-square)](https://github.com/alexprut/HackerRank/blob/master/LICENSE)
@@ -537,6 +537,10 @@ platform tests of a given problem.
 |Basic Select|[Higher Than 75 Marks](https://www.hackerrank.com/challenges/more-than-75-marks)|Easy|15|[Solution.txt](Sql/Basic%20Select/Higher%20Than%2075%20Marks/Solution.txt)|
 |Basic Select|[Employee Names](https://www.hackerrank.com/challenges/name-of-employees)|Easy|10|[Solution.txt](Sql/Basic%20Select/Employee%20Names/Solution.txt)|
 |Basic Select|[Employee Salaries](https://www.hackerrank.com/challenges/salary-of-employees)|Easy|10|[Solution.txt](Sql/Basic%20Select/Employee%20Salaries/Solution.txt)|
+|Aggregation|[Revising Aggregations - The Sum Function](https://www.hackerrank.com/challenges/revising-aggregations-sum)|Easy|10|[Solution.txt](Sql/Aggregation/Revising%20Aggregations%20-%20The%20Sum%20Function/Solution.txt)|
+|Aggregation|[Revising Aggregations - Averages](https://www.hackerrank.com/challenges/revising-aggregations-the-average-function)|Easy|10|[Solution.txt](Sql/Aggregation/Revising%20Aggregations%20-%20Averages/Solution.txt)|
+|Aggregation|[Average Population](https://www.hackerrank.com/challenges/average-population)|Easy|10|[Solution.txt](Sql/Aggregation/Average%20Population/Solution.txt)|
+|Aggregation|[Japan Population](https://www.hackerrank.com/challenges/japan-population)|Easy|10|[Solution.txt](Sql/Aggregation/Japan%20Population/Solution.txt)|
 
 License
 =======

Sql/Aggregation/Average Population/Solution.txt

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+SELECT ROUND(AVG(POPULATION), 0) FROM CITY

Sql/Aggregation/Japan Population/Solution.txt

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+SELECT SUM(POPULATION) FROM CITY WHERE COUNTRYCODE = 'JPN'

Sql/Aggregation/Revising Aggregations - Averages/Solution.txt

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+SELECT AVG(POPULATION) FROM CITY WHERE DISTRICT = 'California'

Sql/Aggregation/Revising Aggregations - The Sum Function/Solution.txt

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+SELECT SUM(POPULATION) FROM CITY WHERE DISTRICT = 'California'

script.js

@@ -11,7 +11,7 @@ function getList(domain, subDomain) {
     var score = item.find(".max-score").text().replace("Max Score: ", "");
     var link = "https://www.hackerrank.com" + item.attr("href");
     console.log(
-      "|" +subDomain+ "|[" +title+ "](" +link+ ")|" +difficulty+ "|" +score+ "|[Solution.java](" +domain+ "/" +subDomain+ "/" +title+ "/Solution.java)|"
+      "|" +subDomain+ "|[" +title+ "](" +link+ ")|" +difficulty+ "|" +score+ "|[Solution.java](" +domain.replace(/ /g,"%20") + "/" +subDomain.replace(/ /g,"%20")+ "/" +title.replace(/ /g,"%20")+ "/Solution.java)|"
     )
   })
 }