Home > Article > Daily Programming > The difference between and and or in mysql
AND and OR in MySQL are logical operators used to combine conditional expressions. AND requires all conditions to be true, OR requires at least one condition to be true.
The difference between AND and OR in MySQL
Get straight to the point:
MySQL AND and OR are two logical operators used to combine multiple conditional expressions.
Detailed expansion:
AND operator
condition1 AND condition2 AND ...
OR operator
condition1 OR condition2 OR ...
Difference
Features | AND | OR |
---|---|---|
All conditions are met | At least one condition is met | |
condition2 | Result | |
true | true | |
false | false | |
true | true | |
false | false |
AND operator:
<code class="mysql">SELECT * FROM employees
WHERE salary > 50000
AND department = 'Sales';</code>
This will select all sales department employees with a salary greater than $50,000.
<code class="mysql">SELECT * FROM employees
WHERE job_title = 'Manager'
OR department = 'Engineering';</code>
This will select all employees who have a manager position or are part of the engineering department.
The above is the detailed content of The difference between and and or in mysql. For more information, please follow other related articles on the PHP Chinese website!