>> (bitwise shift right)

Returns the bitwise shift right of a numeric expression

Syntax

expr >> n --> integer

expr ::= integer

n ::= integer

Arguments

Parameter Description
expr Integer expressions
n Number of bits to shift by

Returns

Returns an integer that is the input shifted right by n positions.

Notes

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

Examples

master=> SELECT 16 >> 1;
8

master=> SELECT 16 >> 2;
4

master=> select 1 >> 1;
0
master=> CREATE TABLE bit(b1 int, b2 int, b3 int);
executed

master=> INSERT INTO bit VALUES (1,2,3), (2, 4, 6), (4, 2, 6), (2, 8, 16), (null, null, 64), (5, 3, 1), (6, 1, 0);
executed

SELECT b1, b2, b3, b1 >> b2, b2 >> b3, b1 >> 1 FROM bit;
b1 | b2 | b3 | ?column? | ?column?0 | ?column?1
---+----+----+----------+-----------+----------
 1 |  2 |  3 |        0 |         0 |         0
 2 |  4 |  6 |        0 |         0 |         1
 4 |  2 |  6 |        1 |         0 |         2
 2 |  8 | 16 |        0 |         0 |         1
   |    | 64 |          |           |
 5 |  3 |  1 |        0 |         1 |         2
 6 |  1 |  0 |        3 |         1 |         3