bit_shift_right
description
syntax
BIT_SHIFT_RIGHT(BIGINT x, TINYINT c)
Return result of logical right shift of BIGINT type x by c bits.
example
Normal case
select 1024 as x, number as c, bit_shift_right(1024, number) as bit_shift_right from numbers("number"="5")
--------------
+------+------+-----------------+
| x | c | bit_shift_right |
+------+------+-----------------+
| 1024 | 0 | 1024 |
| 1024 | 1 | 512 |
| 1024 | 2 | 256 |
| 1024 | 3 | 128 |
| 1024 | 4 | 64 |
+------+------+-----------------+
5 rows in set (0.03 sec)Logical right shift BIGINT -1 by 1 bits gets BIGINT_MAX
select bit_shift_right(-1, 1)
--------------
+------------------------+
| bit_shift_right(-1, 1) |
+------------------------+
| 9223372036854775807 |
+------------------------+Return zero if c is less than 0
select bit_shift_right(100, -1)
--------------
+--------------------------+
| bit_shift_right(100, -1) |
+--------------------------+
| 0 |
+--------------------------+
1 row in set (0.04 sec)keywords
BITSHIFT, BITSHIFTRIGHT