how to use having in sql code example
Example 1: what is having clause in sql
HAVING clause in SQL is used to
filter records in combination
with the GROUP BY clause. It is
different from WHERE, since
WHERE clause cannot filter
aggregated records. HAVING is a column
operation.
Select department_id, Min (Salary)
From Employees
Group By Department_id
Having MIN (salary) < 3500;
Example 2: having keyword sql
Having keyword basically similar to if condition
Only returns true conditions
SELECT FIRST_NAME , COUNT(*)
FROM EMPLOYEES
GROUP BY FIRST_NAME
HAVING COUNT(*) > 1
Example 3: sql count having
SELECT COUNT( * )
FROM agents
HAVING COUNT(*)>1;
Example 4: having clause in sql
HAVING clause in SQL is used to
filter records in combination
with the GROUP BY clause. It is
different from WHERE, since
WHERE clause cannot filter
aggregated records. HAVING is a column
operation.
Select department_id, Min (Salary)
From Employees
Group By Department_id
Having MIN (salary) < 3500;