Merge pull request #356 from degr8sid-code/degr8sid-code-sql-rank-rownumber

SQL-72: compare sql rank rownumber

Author: ykxvqze

sql-queries-11/understanding-rank-rownumber/diff-rank-rownumber.sql

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+SELECT id, name, gpa, RANK() OVER (ORDER BY gpa DESC) AS Rank, ROW_NUMBER() OVER (ORDER BY gpa DESC) AS RowNum FROM Student;

sql-queries-11/understanding-rank-rownumber/rank.sql

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+SELECT id, name, gpa, RANK() OVER (ORDER BY gpa DESC) AS Rank FROM Student;

sql-queries-11/understanding-rank-rownumber/row-number.sql

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+SELECT student_id, course_id, semester, year, ROW_NUMBER() OVER (PARTITION BY student_id ORDER BY year, semester, course_id) AS RowNum FROM Registration;