# BIT\_AND

Performs an AND operation on each bit between expressions.

Since `BIT_AND` is an aggregate function, it can be used with the `GROUP BY` clause.

May be used as a window function.

## Syntax

## Aggregate Function

```sql
BIT_AND (<expr1>, <expr2>)
```

## Window Function

```sql
BIT_AND (col | expr) OVER (
    [PARTITION BY (col | expr), ...] 
    [ORDER BY (col | expr), ...]

```

## Arguments

* expression: expressions must be integer data types.

## Return Type

Returns the same value as the argument data type. This will result in a one if the first and second bits are both one. Otherwise, the result will return a zero.

## Examples

## Aggregate Function

```sql
CREATE TABLE ba_numeric_sample (group_name varchar(10), ltr_val int);
INSERT INTO ba_numeric_sample VALUES
 ('alpha', 111), ('beta', 110), ('gamma', 000), ('delta', 001);


```

```sql
SELECT group_name, BIT_AND(000) FROM ba_numeric_sample GROUP BY group_name;

```

```output

+-------------------------+
|group_name | BIT_AND(000)|
+-------------------------+
|alpha      | 0           |
+-----------|-------------+
|beta       | 0           |
+-----------|-------------+
|gamma      | 0           |
+-----------|-------------+
|delta      | 0           |
+-----------|-------------+
```

## Window Function

```sql
CREATE TABLE player_scores(player_name VARCHAR(50), player_id VARCHAR(10), 
    1st_qtr_score DECIMAL(5,2), 2nd_qtr_score DECIMAL(5,2), 
    3rd_qtr_score DECIMAL(5,2), 4th_qtr_score DECIMAL(5,2), 
    yearly_total AS 1st_qtr_score + 2nd_qtr_score + 3rd_qtr_score + 4th_qtr_score PERSISTED DECIMAL(5,2));

INSERT INTO player_scores VALUES
    ('Steve', '119','22.50','72.00', '63.00', '45.00'),
    ('Jack', '432', '90.10', '78.00','88.20', '92.20'),
    ('Jim', '779','75.00', '68.90','55.70', '72.00'), 
    ('Eve', '189','91.50', '88.10', '95.00', '94.50'),
    ('Shelia','338', '75.60', '72.00', '81.10', '78.40'),
    ('June', '521', '81.00', '87.30','76.80','82.20'),
    ('Martin', '674','98.80', '95.10', '88.00', '96.40');
```

```sql
SELECT player_name, 1st_qtr_score, 2nd_qtr_score,
bit_and (3rd_qtr_score) OVER (ORDER BY 2nd_qtr_score)
FROM player_scores
ORDER BY player_name;


```

```output

+-------------+---------------+---------------+-------------------------------+
| player_name | 1st_qtr_score | 2nd_qtr_score | bit_and (3rd_qtr_score)       |
|             |               |               | OVER (ORDER BY 2nd_qtr_score) |
+-------------+---------------+---------------+-------------------------------+
| Eve         |         91.50 |         88.10 |                             0 |
| Jack        |         90.10 |         78.00 |                            16 |
| Jim         |         75.00 |         68.90 |                            56 |
| June        |         81.00 |         87.30 |                             0 |
| Martin      |         98.80 |         95.10 |                             0 |
| Shelia      |         75.60 |         72.00 |                            16 |
| Steve       |         22.50 |         72.00 |                            16 |
+-------------+---------------+---------------+-------------------------------+

```

***

Modified at: March 8, 2024

Source: [/db/v9.1/reference/sql-reference/aggregate-functions/bit-and/](https://docs.singlestore.com/db/v9.1/reference/sql-reference/aggregate-functions/bit-and/)

(An index of the documentation is available at /llms.txt)