Add: reformat

Author: Openset

problems/big-countries/big_countries.sql

@@ -1,11 +1,11 @@
 # Write your MySQL query statement below
 
 SELECT
-	`name`,
-	`population`,
-	`area`
+  `name`,
+  `population`,
+  `area`
 FROM
-	`World`
+  `World`
 WHERE
-	`area` > 3000000
-	OR `population` > 25000000;
+  `area` > 3000000
+  OR `population` > 25000000;

problems/duplicate-emails/duplicate_emails.sql

@@ -1,10 +1,10 @@
 # Write your MySQL query statement below
 
 SELECT
-	Email
+  Email
 FROM
-	Person
+  Person
 GROUP BY
-	Email
+  Email
 HAVING
-	count( 1 ) > 1;
+  count(1) > 1;

problems/swap-salary/swap_salary.sql

@@ -1,8 +1,10 @@
 # Write your MySQL query statement below
 
+# Method 1
 UPDATE salary
 SET sex = IF(sex = 'm', 'f', 'm');
 
+# Method 2
 UPDATE salary
 SET sex = CASE sex
           WHEN 'm'