Table of contents README Template db_fiddle_public_urls 1.1 Basics 176 Second Highest Salary 1.2 Simple Join 176 Second Highest Salary 1.3 Simple Subquery 176 Second Highest Salary 1.4 Case When or IFF 176 Second Highest Salary 1.5 Window Function 176 Second Highest Salary 177 Nth Hightest Salary 178 Test Question 2.1 Advanced Join 176 Second Highest Salary 2.2 Advanced Subquery 176 Second Highest Salary 2.3 Recursive CTE 176 Second Highest Salary 3.1 Offset Fetch 176 Second Highest Salary 3.2 Pivot or Unpivot 176 Second Highest Salary 3.3 Variable 176 Second Highest Salary 3.4 SQL Command 176 Second Highest Salary 4.1 每日一题 176 Second Highest Salary