feat: update sql solution to lc problems: No.0596

No.0596.Classes More Than 5 Students

Author: YangFong

solution/0500-0599/0596.Classes More Than 5 Students/README.md

@@ -67,15 +67,15 @@ Courses table:
 
 ### **SQL**
 
-```
-select
-    c.class
-from
-    (select distinct courses.student, courses.class from courses) c
-group by
-    c.class
-having
-    count(c.class)>=5
+```sql
+SELECT
+	class 
+FROM
+	courses 
+GROUP BY
+	class 
+HAVING
+	COUNT( class ) >= 5
 ```
 
 <!-- tabs:end -->

solution/0500-0599/0596.Classes More Than 5 Students/README_EN.md

@@ -63,15 +63,15 @@ Courses table:
 
 ### **SQL**
 
-```
-select
-    c.class
-from
-    (select distinct courses.student, courses.class from courses) c
-group by
-    c.class
-having
-    count(c.class)>=5
+```sql
+SELECT
+	class 
+FROM
+	courses 
+GROUP BY
+	class 
+HAVING
+	COUNT( class ) >= 5
 ```
 
 <!-- tabs:end -->

solution/0500-0599/0596.Classes More Than 5 Students/Solution.sql

@@ -1,8 +1,8 @@
-select
-    c.class
-from
-    (select distinct courses.student, courses.class from courses) c
-group by
-    c.class
-having
-    count(c.class)>=5
+SELECT
+	class 
+FROM
+	courses 
+GROUP BY
+	class 
+HAVING
+	COUNT( class ) >= 5