2nd height salary sql code example

Example 1: sql select second max

Both options you find max as a subset and then exclude from main select
sql> SELECT MAX( col ) FROM table
 	WHERE col < ( SELECT MAX( col ) FROM table);
sql> SELECT MAX(col) FROM table 
WHERE col NOT IN (SELECT MAX(col) FROM table);

Example 2: 3rd height salary sql

SELECT MIN(EmpSalary) from ( 
	SELECT EmpSalary from Employee ORDER BY EmpSalary DESC LIMIT 3 
);

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