SQL COUNT() Function Clause

SQL TUTORIALS-

SQL COUNT() Function Clause

Introduction-

-✅COUNT() function returns the number of rows that match a specified condition or are present in a column...

🔸 Example Table: Employees

✅ Example 1: Count All Rows.

SELECT COUNT(*) AS TotalOrders FROM Orders;

✅Result Show :-

TotalOrders → 3 |

✅ Example 2: Count Non-NULL in a Column.

SELECT COUNT(City) AS CitiesMentioned FROM Orders;

✅Result Show :-

CitiesMentioned → 3 |

✅ Example 3: Count Orders by City (Use with GROUP BY).

SELECT City, COUNT(*) AS OrdersCount
FROM Orders
GROUP BY City;

✅Result Show :-

🔸 Example Table: Employees

✅ Example 4: Count the number of employees in each department.

SELECT Department, COUNT(*) AS TotalEmployees
FROM Employees
GROUP BY Department;

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