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# BOOL_OR

## Overview

The `BOOL_OR()` function calculates all the boolean values in the aggregated group, which will have these results:

* `false` if all the values are `false` for every row.
* `true` if at least one row in the group is true.

The input and the return type must be in `BOOL`.

<Info>`NULL` values are not aggregated, so it will return `NULL` if there are zero input rows.</Info>

## Examples

In this example, we will use a payment\*\* \*\*table that stores details of the orders, whether the order has been paid or unpaid by the customer:

```sql theme={null}
CREATE TABLE payment (
    orderid int,
    custname text,
    orderproduct text,
    ordertotal real,
    paid boolean
);
INSERT INTO payment (orderid, custname, orderproduct, ordertotal, paid)
VALUES 
(9557411, 'Maya', 'Jeans', 10.5, false),
(9557421, 'Aaron', 'T-Shirt', 9.2, false),
(9557451, 'Alex', 'Hat', 10.8, false),
(9557311, 'Will', 'Hat', 8.5, true),
(9557321, 'Will', 'T-Shirt', 12.15, false),
(9557351, 'Maya', 'T-Shirt', 9.5, true),
(9557221, 'Maya', 'Jeans', 11.02, false),
(9557251, 'Alex', 'Jeans', 11.09, false),
(9557231, 'Aaron', 'Hat', 14.56, false),
(9557281, 'Aaron', 'Hat', 12.15, false),
(9557291, 'Will', 'T-Shirt', 13.1, false);
```

```sql theme={null}
SELECT * FROM payment;
```

The above query will show the following table:

```sql theme={null}
+----------+-----------+---------------+-------------+--------+
| orderid  | custname  | orderproduct  | ordertotal  | paid   |
+----------+-----------+---------------+-------------+--------+
| 9557411  | Maya      | Jeans         | 10.5        | f      |
| 9557421  | Aaron     | T-Shirt       | 9.2         | f      |
| 9557451  | Alex      | Hat           | 10.8        | f      |
| 9557311  | Will      | Hat           | 8.5         | t      |
| 9557321  | Will      | T-Shirt       | 12.15       | f      |
| 9557351  | Maya      | T-Shirt       | 9.5         | t      |
| 9557221  | Maya      | Jeans         | 11.02       | f      |
| 9557251  | Alex      | Jeans         | 11.09       | f      |
| 9557231  | Aaron     | Hat           | 14.56       | f      |
| 9557281  | Aaron     | Hat           | 12.15       | f      |
| 9557291  | Will      | T-Shirt       | 13.1        | f      |
+----------+-----------+---------------+-------------+--------+
```

### Case #1: `BOOL_OR` with a true result

We will find out if all customers have paid for their orders using the query below:

```sql theme={null}
SELECT BOOL_OR(paid) AS "final_result" FROM payment;
```

If there is at least one `TRUE` value, the overall result will be `TRUE`. The final output shows that some order has been paid regardless of the other unpaid orders.

```sql theme={null}
+--------------+
| final_result |
+--------------+
| t            |
+--------------+
```

### Case #2: `BOOL_OR` with a false result

We will find out if Aaron has paid for his orders using the query below:

```sql theme={null}
SELECT BOOL_OR(paid) AS aaron_paid
FROM payment
WHERE custname ='Aaron';
```

If all values are `FALSE`, then the overall result will be `FALSE`. The final output shows that Aaron hasn’t paid for all his orders.

```sql theme={null}
+-------------+
| aaron_paid  |
+-------------+
| f           |
+-------------+
```