BIT_SHIFT_RIGHT

Description

Performs a right shift bitwise operation, which moves all bits of a binary number to the right by a specified number of positions. This operation is commonly used for handling binary data or for efficient mathematical calculations (such as division).

Logical right shift of -1 by one position results in BIGINT_MAX (9223372036854775807).

Right shifting a number by a negative value always results in 0.

Syntax

BIT_SHIFT_RIGHT(<x>, <bits>)

Parameters

• <x>: The number to be shifted.
• <bits>: The number of positions to shift right. It is an integer that determines how many positions <x> will be shifted.

Return Value

Returns an integer representing the result after the right shift operation.

Examples

1. Example 1

   select BIT_SHIFT_RIGHT(1024,3), BIT_SHIFT_RIGHT(-1,1), BIT_SHIFT_RIGHT(100, -1);

   +-------------------------+-----------------------+--------------------------+
   | BIT_SHIFT_RIGHT(1024,3) | BIT_SHIFT_RIGHT(-1,1) | BIT_SHIFT_RIGHT(100, -1) |
   +-------------------------+-----------------------+--------------------------+
   |                     128 |   9223372036854775807 |                        0 |
   +-------------------------+-----------------------+--------------------------+
2. NULL argument

   select BIT_SHIFT_RIGHT(1024, NULL), BIT_SHIFT_RIGHT(NULL, 3), BIT_SHIFT_RIGHT(NULL, NULL);

   +-----------------------------+--------------------------+-----------------------------+
   | BIT_SHIFT_RIGHT(1024, NULL) | BIT_SHIFT_RIGHT(NULL, 3) | BIT_SHIFT_RIGHT(NULL, NULL) |
   +-----------------------------+--------------------------+-----------------------------+
   |                        NULL |                     NULL |                        NULL |
   +-----------------------------+--------------------------+-----------------------------+