In MySQL, ANY and ALL are used in conjunction with comparison operators to perform comparisons between a value and a set of values.
These are typically used in subqueries.
The ANY operator returns true if the comparison is true for at least one of the values in the set.
SELECT column1 FROM table1 WHERE column1 < ANY (SELECT column2 FROM table2);
The ALL operator returns true if the comparison is true for all values in the set.
SELECT column1 FROM table1 WHERE column1 < ALL (SELECT column2 FROM table2);
It's important to note that using ANY and ALL often involves subqueries and comparisons, and the exact behaviour can depend on the specific context in which they are used.
The use of these operators can be helpful in scenarios where we want to compare a single value with a set of values obtained from a subquery.
ANY: True if the comparison is true for at least one value in the set.
ALL: True if the comparison is true for all values in the set.