# &&

## Syntax

```sql
AND, &&
```

## Description

Logical `AND`. Evaluates to `1` if all operands are non-zero and not `NULL`, to `0` if one or more operands are `0`, otherwise `NULL` is returned.

For this operator, [short-circuit evaluation](https://mariadb.com/docs/server/reference/sql-structure/operator-precedence#short-circuit-evaluation) can be used.

## Examples

```sql
SELECT 1 && 1;
+--------+
| 1 && 1 |
+--------+
|      1 |
+--------+

SELECT 1 && 0;
+--------+
| 1 && 0 |
+--------+
|      0 |
+--------+

SELECT 1 && NULL;
+-----------+
| 1 && NULL |
+-----------+
|      NULL |
+-----------+

SELECT 0 && NULL;
+-----------+
| 0 && NULL |
+-----------+
|         0 |
+-----------+

SELECT NULL && 0;
+-----------+
| NULL && 0 |
+-----------+
|         0 |
+-----------+
```

## See Also

* [Operator Precedence](https://mariadb.com/docs/server/reference/sql-structure/operators/operator-precedence)

<sub>*This page is licensed: GPLv2, originally from*</sub> [<sub>*fill\_help\_tables.sql*</sub>](https://github.com/MariaDB/server/blob/main/scripts/fill_help_tables.sql)

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