Categories:

Bitwise Expression Functions

# BITAND¶

Returns the bitwise AND of two numeric expressions.

Aliases:

BIT_AND

BITAND_AGG

## Syntax¶

BITAND( <expr1> , <expr2> )


## Arguments¶

expr1

This expression must evaluate to a data type that can be cast to INTEGER.

expr2

This expression must evaluate to a data type that can be cast to INTEGER.

## Returns¶

Returns an integer that represents the bitwise AND of the input expressions.

## Usage Notes¶

• If the data type of either argument is numeric but not INTEGER (e.g. FLOAT, DECIMAL, etc.), then the argument will be cast to INTEGER.

• If the data type of either argument is a string (e.g. VARCHAR), then the argument will be cast to INTEGER if possible. For example, the string ‘12.3’ will be cast to 12. If the value cannot be cast to INTEGER, then the value will be treated as NULL.

• If either value is NULL, the result is NULL.

## Examples¶

This example shows how to use BITAND(), BITOR(), and BITXOR():

Create a simple table and data:

CREATE TABLE bits (ID INTEGER, bit1 INTEGER, bit2 INTEGER);

INSERT INTO bits (ID, bit1, bit2) VALUES
(   11,    1,     1),    -- Bits are all the same.
(   24,    2,     4),    -- Bits are all different.
(   42,    4,     2),    -- Bits are all different.
( 1624,   16,    24),    -- Bits overlap.
(65504,    0, 65504),    -- Lots of bits (all but the low 6 bits)
(    0, NULL,  NULL)     -- No bits
;


Execute the query:

SELECT bit1, bit2, BITAND(bit1, bit2), BITOR(bit1, bit2), BITXOR(bit1, BIT2)
FROM bits
ORDER BY bit1;


Output:

+------+-------+--------------------+-------------------+--------------------+
| BIT1 |  BIT2 | BITAND(BIT1, BIT2) | BITOR(BIT1, BIT2) | BITXOR(BIT1, BIT2) |
|------+-------+--------------------+-------------------+--------------------|
|    0 | 65504 |                  0 |             65504 |              65504 |
|    1 |     1 |                  1 |                 1 |                  0 |
|    2 |     4 |                  0 |                 6 |                  6 |
|    4 |     2 |                  0 |                 6 |                  6 |
|   16 |    24 |                 16 |                24 |                  8 |
| NULL |  NULL |               NULL |              NULL |               NULL |
+------+-------+--------------------+-------------------+--------------------+