Menu Close

Can we use Max with Count?

Admin

Can we use Max with Count?

And the short answer to the above question is, no. You can’t. It is not possible to nest aggregate functions.

What is Max Oracle?

The Oracle MAX() function is an aggregate function that returns the maximum value of a set. The following illustrates the syntax of MAX() function: MAX( expression ); Similar to the MIN() function, the DISTINCT and ALL clauses are irrelevant to the MAX() function.

How do you count in Oracle?

Oracle COUNT() function syntax The Oracle COUNT() function is an aggregate function that returns the number of items in a group. COUNT(*) function returns the number of items in a group, including NULL and duplicate values. COUNT(DISTINCT expression) function returns the number of unique and non-null items in a group.

Can we use max with * in SQL?

Try using this SQL SELECT statement: SELECT * FROM employees WHERE department_id=30 AND salary = (SELECT MAX(salary) FROM employees WHERE department_id=30); This will return the employee information for only the employee in department 30 that has the highest salary.

How do you find the maximum number of tables?

To get one row with the highest count, you can use ORDER BY ct LIMIT 1 : SELECT c. yr, count(*) AS ct FROM actor a JOIN casting c ON c. actorid = a.id WHERE a.name = ‘John Travolta’ GROUP BY c.

How do I use Max in SQL Developer?

Is Max an aggregate function?

SQL Server MAX() function is an aggregate function that returns the maximum value in a set. The MAX() function accepts an expression that can be a column or a valid expression. Similar to the MIN() function, the MAX() function ignores NULL values and considers all values in the calculation.

How do you SELECT the top 5 maximum value in SQL?

The SQL SELECT TOP Clause

  1. SQL Server / MS Access Syntax: SELECT TOP number|percent column_name(s) FROM table_name.
  2. MySQL Syntax: SELECT column_name(s) FROM table_name.
  3. Oracle 12 Syntax: SELECT column_name(s) FROM table_name.
  4. Older Oracle Syntax: SELECT column_name(s)
  5. Older Oracle Syntax (with ORDER BY): SELECT *

How do you find the nth highest value in SQL?

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

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

Can you explain to me on Max () function in SQL with an example?

The SQL Max function returns the maximum value of the expression you provide to it. It’s good for finding the highest or maximum value in a column. It can work with numbers or dates. It’s a standard SQL function so it works in major databases such as Oracle, SQL Server, MySQL, and PostgreSQL.