Usage of all any in mysql

The ALL and ANY operators in MySQL are used to compare whether a collection meets a specific condition. ALL checks whether all elements are satisfied, while ANY only requires one element to be satisfied.

ALL and ANY in MySQL

ALL and ANY are set operators in MySQL, used for comparison Whether two or more sets meet certain conditions.

ALL

The ALL operator checks whether all elements in a given collection satisfy the results returned by a subquery. The syntax is as follows:

<code class="sql">SELECT * FROM table1
WHERE condition ALL (SELECT condition FROM table2);</code>

If the subquery returns true for every record in table1, then the record is returned. In other words, true is returned if all elements satisfy the subquery condition.

Example:

<code class="sql">SELECT * FROM students
WHERE city ALL (SELECT city FROM states WHERE country = 'USA');</code>

This will return records for all students residing in all states in the United States.

ANY

The ANY operator checks whether any element in a given collection satisfies the results returned by a subquery. The syntax is as follows:

<code class="sql">SELECT * FROM table1
WHERE condition ANY (SELECT condition FROM table2);</code>

If the subquery returns true for at least one record in table1, return that record. In other words, true is returned if any element satisfies the subquery condition.

Example:

<code class="sql">SELECT * FROM employees
WHERE salary ANY (SELECT salary FROM managers WHERE department = 'Sales');</code>

This will return all employee records whose salary is the same as any sales department manager's salary.

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