having sql code example
Example 1: having vs where sql
The difference between the having and
where clause in SQL is that the where
clause cannot be used with aggregates(max, min,count,avg,sum)
, but the having clause can.
Example 2: 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 3: SQL only show where count is great than 1
SELECT COUNT( * )
FROM agents
HAVING COUNT(*)>1;
Example 4: 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 5: 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 6: mysql HAVING
SELECT colonne1, SUM(colonne2)
FROM nom_table
GROUP BY colonne1
HAVING fonction(colonne2) operateur valeur