¿Qué devuelve Max en SQL?

What does Max in SQL return?

The MAX() function returns the largest value of the selected column.

To find the maximum value of a column, use the MAX() aggregate function; it takes a column name or an expression to find the maximum value. In our example, the subquery returns the highest number in the column grade (subquery: SELECT MAX(grade) FROM student ).

MAX ignores any null values. MAX returns NULL when there is no row to select.

The data stored in tables can be summarized using SQL Group Functions. The five group functions in SQL are- AVG, COUNT, MAX, MIN and SUM. All these functions return one numeric value that is why these are known as group or aggregate functions.

MAX() function with Having The SQL HAVING CLAUSE is reserved for aggregate function. The usage of WHERE clause along with SQL MAX() have also described in this page. The SQL IN OPERATOR which checks a value within a set of values and retrieve the rows from the table can also be used with MAX function.

MIN ignores any null values. With character data columns, MIN finds the value that is lowest in the sort sequence.

We can’t reference the result of an aggregate function (for example MAX () ) in a WHERE clause of the same SELECT. The normative pattern for solving this type of problem is to use an inline view, something like this: This is just one way to get the specified result.

MySQL supports the LIMIT clause to select a limited number of records, while Oracle uses FETCH FIRST n ROWS ONLY and ROWNUM. Below is a selection from the “Customers” table in the Northwind sample database: 120 Hanover Sq. The following SQL statement selects the first three records from the “Customers” table (for SQL Server/MS Access):

The usage of WHERE clause along with SQL MAX () have also described in this page. The SQL IN OPERATOR which checks a value within a set of values and retrieve the rows from the table can also be used with MAX function. To get data of ‘cust_city’, ‘cust_country’ and maximum ‘outstanding_amt’ from the customer table with following conditions –

Because you have listed one column in your SELECT statement that is not encapsulated in the MAX function, you must use a GROUP BY clause. The department field must, therefore, be listed in the GROUP BY section. Question: I’m trying to pull some info out of a table.