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The SQL COUNT () Function. The COUNT() function returns the number of rows that matches a specified criterion. Example Get your own SQL Server. Find the total number of rows in the Products table: SELECT COUNT(*) FROM Products; Try it Yourself » Syntax. SELECT COUNT(column_name) FROM table_name. WHERE condition; . Demo Database.
The COUNT() function in SQL is used to get the number of rows with the SELECT statement. In this tutorial, you will learn about the SQL COUNT() function with the help of examples.
The SQL COUNT function is an aggregate function that returns the number of rows returned by a query. You can use the COUNT function in the SELECT statement to get the number of employees, the number of employees in each department, the number of employees who hold a specific job, etc. The following illustrates the syntax of the SQL COUNT function:
Oct 21, 2021 · The COUNT() function is one of the most useful aggregate functions in SQL. Counting the total number of orders by a customer in the last few days, the number of unique visitors who bought a museum ticket, or the number of employees in a department, can all be done using the COUNT() function.
Mar 16, 2023 · The SQL COUNT() function returns the number of rows returned by a query. In practice, the COUNT() function can help you calculate the number of films in a database, the number of films in a specific genre, the number of films per director, etc. If you're new to aggregate functions, I recommend our SQL Basics course.
The COUNT () function is an aggregate function that is used to find the number of values in the specified column excluding NULL values. It can be applied on numeric, character, or date values. Syntax: SELECT COUNT([ALL | DISTINCT] expression | column_name) FROM table_name. [WHERE condition] [GROUP BY] ;
COUNT(ALL <expression>) evaluates expression for each row in a group, and returns the number of nonnull values. COUNT(DISTINCT *expression*) evaluates expression for each row in a group, and returns the number of unique, nonnull values. COUNT is a deterministic function when used without the OVER and ORDER BY clauses.
The COUNT function syntax is as follows: SELECT COUNT(column_name) FROM table_name. WHERE condition; In this syntax, column_name specifies the name of the column for which you want to count the rows, and table_name specifies the name of the table that contains the data.
The COUNT(DISTINCT column) syntax allows us to count the number of unique values in a column. For example, each product has an associated brand in the products table. We can count the number of unique products and brands in the table.
SQL Server COUNT() is an aggregate function that returns the number of items in a set. The following shows the syntax of the COUNT() function: COUNT([ALL | DISTINCT ] expression) Code language: SQL (Structured Query Language) (sql) In this syntax: ALL instructs the COUNT() function to apply to all values. ALL is the default.
