In SQL, ANY and ALL are operators used to compare a value with a set of values returned by a subquery. They enable more flexible filtering of query results by comparing the main query’s value with the values produced by the subquery.
SQL Any and All Syntax
SQL
x
1
SELECT column_name(s)2
FROM table_name3
WHERE column_name comparison_operator ANY (subquery);4
5
SELECT column_name(s)6
FROM table_name7
WHERE column_name comparison_operator ALL (subquery);
SQL All With Select Syntax
SQL
1
1
SELECT column_name2
FROM table_name3
WHERE column_name comparison_operator ALL (SELECT column_name FROM another_table);SQL All With WHERE and HAVING Syntax
SQL
1
1
SELECT column_name2
FROM table_name3
WHERE column_name > ALL (SELECT column_name FROM another_table);4
5
SELECT column_name, COUNT(*)6
FROM table_name7
GROUP BY column_name8
HAVING COUNT(*) > ALL (SELECT COUNT(*) FROM another_table);SQL All Doctors with All Appointments After a Certain Date Example
This query checks if all appointments for a doctor occur after the given date. The subquery retrieves doctor_id with future appointments, and the ALL operator ensures that all appointments for each doctor are after that date.
SQL
1
1
SELECT d.first_name, d.last_name2
FROM Doctors d3
WHERE d.doctor_id = ALL (4
SELECT a.doctor_id5
FROM Appointments a6
WHERE a.appointment_date > '2024-01-01'7
);SQL Any and All Visual Diagram
SQL Any and All Labs
