How can I get second highest salary?

Sort Employee as per descending order of salary.
Take first N records using rownum. So in this step Nth record here is Nth highest salary.
Now sort this temporary result in ascending order. Thus Nth highest salary is now first record.
Get first record from this temporary result.

How do I reach the second highest salary?

We can nest the above query to find the second largest salary. select *from employee group by salary order by salary desc limit 1,1; There are other ways : SELECT name, MAX(salary) AS salary FROM employee WHERE salary IN (SELECT salary FROM employee MINUS SELECT MAX(salary) FROM employee);

How can I get second highest salary in SQL?

The SQL query to calculate second highest salary in database table name as Emp

SQL> select min(salary) from.
(select distinct salary from emp order by salary desc)
where rownum < 3;
In order to calculate the second highest salary use rownum < 3.
In order to calculate the third highest salary use rownum < 4.

The SQL query to calculate second highest salary in database table name as Emp

SQL> select min(salary) from.
(select distinct salary from emp order by salary desc)
where rownum < 3;
In order to calculate the second highest salary use rownum < 3.
In order to calculate the third highest salary use rownum < 4.

How can I get 3 highest salary?

Here is a way to do this task using dense_rank() function. Query : select * from( select ename, sal, dense_rank() over(order by sal desc)r from Employee) where r=&n; To find to the 2nd highest sal set n = 2 To find 3rd highest sal set n = 3 and so on.

How can we calculate second height salary from table?

How To Find Second Highest Salary Using a Sub-Query

SELECT TOP 1 SALARY.
FROM (
SELECT DISTINCT TOP 2 SALARY.
FROM tbl_Employees.
ORDER BY SALARY DESC.
) RESULT.
ORDER BY SALARY.

How To Find Second Highest Salary Using a Sub-Query

SELECT TOP 1 SALARY.
FROM (
SELECT DISTINCT TOP 2 SALARY.
FROM tbl_Employees.
ORDER BY SALARY DESC.
) RESULT.
ORDER BY SALARY.

Where can I find employee Manager in SQL?

To find out managers, we create two instances of Employee table e1 and e2 and compare e1. ManagerId = e2.Id to find all managers, the next condition is just to compare their salaries. This shows the power of Self Join.

How do you write a group by query?

Syntax: SELECT column1, function_name(column2) FROM table_name WHERE condition GROUP BY column1, column2 HAVING condition ORDER BY column1, column2; function_name: Name of the function used for example, SUM() , AVG(). table_name: Name of the table. condition: Condition used.

How does limit in SQL work?

The SQL LIMIT clause constrains the number of rows returned by a SELECT statement. For Microsoft databases like SQL Server or MSAccess, you can use the SELECT TOP statement to limit your results, which is Microsoft’s proprietary equivalent to the SELECT LIMIT statement.

How do you find the nth value in SQL?

Using this function we can find the nth highest value using the following query.

DECLARE @nthHighest INT = 2. …
DECLARE @nthHighest INT = 2.
;WITH CTE(EmpId,Empcode,Name,Salary,EmpRank)
SELECT EmpId,Empcode,Name,Salary,
DENSE_RANK() OVER(ORDER BY Salary DESC) AS EmpRank.
SELECT * FROM CTE WHERE EmpRank = @nthHighest.

Using this function we can find the nth highest value using the following query.

DECLARE @nthHighest INT = 2. …
DECLARE @nthHighest INT = 2.
;WITH CTE(EmpId,Empcode,Name,Salary,EmpRank)
SELECT EmpId,Empcode,Name,Salary,
DENSE_RANK() OVER(ORDER BY Salary DESC) AS EmpRank.
SELECT * FROM CTE WHERE EmpRank = @nthHighest.

How create self join in SQL?

SELF JOIN syntax

To perform a SELF JOIN in SQL, the LEFT or INNER JOIN is usually used. SELECT column_names FROM Table1 t1 [INNER | LEFT] JOIN Table1 t2 ON join_predicate; Note: t1 and t2 are different table aliases for the same table. You can also create the SELF JOIN with the help of the WHERE clause.

How delete a column in SQL?

Right-click the column you want to delete and choose Delete Column from the shortcut menu. If the column participates in a relationship (FOREIGN KEY or PRIMARY KEY), a message prompts you to confirm the deletion of the selected columns and their relationships. Choose Yes.

How use self join in Oracle?

To join a table itself means that each row of the table is combined with itself and with every other row of the table. The table appears twice in the FROM clause and is followed by table aliases that qualify column names in the join condition. The self join can be viewed as a join of two copies of the same table.

What is a cursor in SQL?

A cursor holds the rows (one or more) returned by a SQL statement. The set of rows the cursor holds is referred to as the active set. You can name a cursor so that it could be referred to in a program to fetch and process the rows returned by the SQL statement, one at a time.

How do I create a subquery in SQL?

SQL – Sub Queries

Subqueries must be enclosed within parentheses.
A subquery can have only one column in the SELECT clause, unless multiple columns are in the main query for the subquery to compare its selected columns.
An ORDER BY command cannot be used in a subquery, although the main query can use an ORDER BY.

SQL – Sub Queries

Subqueries must be enclosed within parentheses.
A subquery can have only one column in the SELECT clause, unless multiple columns are in the main query for the subquery to compare its selected columns.
An ORDER BY command cannot be used in a subquery, although the main query can use an ORDER BY.

What is SQL Indexing?

A SQL index is used to retrieve data from a database very fast. Indexing a table or view is, without a doubt, one of the best ways to improve the performance of queries and applications. A SQL index is a quick lookup table for finding records users need to search frequently.

What is normalization in SQL?

Normalization is the process of organizing data in a database. This includes creating tables and establishing relationships between those tables according to rules designed both to protect the data and to make the database more flexible by eliminating redundancy and inconsistent dependency.

How do you create a view?

To create a view, a user must have the appropriate system privilege according to the specific implementation. CREATE VIEW view_name AS SELECT column1, column2….. FROM table_name WHERE [condition]; You can include multiple tables in your SELECT statement in a similar way as you use them in a normal SQL SELECT query.

How do I create a new database in MySQL?

Open the MySQL Workbench as an administrator (Right-click, Run as Admin). Click on File>Create Schema to create the database schema. Enter a name for the schema and click Apply. In the Apply SQL Script to Database window, click Apply to run the SQL command that creates the schema.

What is a Cartesian join SQL?

CARTESIAN JOIN: The CARTESIAN JOIN is also known as CROSS JOIN. In a CARTESIAN JOIN there is a join for each row of one table to every row of another table. This usually happens when the matching column or WHERE condition is not specified.

What is cross join in SQL?

In SQL, the CROSS JOIN is used to combine each row of the first table with each row of the second table. It is also known as the Cartesian join since it returns the Cartesian product of the sets of rows from the joined tables.

How do I run a cursor in Oracle?

How to use Explicit Cursor?

DECLARE the cursor in the Declaration section.
OPEN the cursor in the Execution Section.
FETCH the data from the cursor into PL/SQL variables or records in the Execution Section.
CLOSE the cursor in the Execution Section before you end the PL/SQL Block.