Generate a Random Integer Within a Range
Jim_Knicely
- Select Field - Administrator
The RANDOMINT functions returns one of the n integers from 0 through n – 1.
If you need to generated a random integer that falls within a range of integers between X and Y, inclusive, use this simple formula:
FLOOR(RANDOM() * (Y - X + 1) + X)
Example:
dbadmin=> SELECT FLOOR(RANDOM() * (20 - 10 + 1) + 10) AS random_integer_between_10_and_20,
dbadmin-> FLOOR(RANDOM() * (100 - 50 + 1) + 50) AS random_integer_between_50_and_100,
dbadmin-> FLOOR(RANDOM() * (1000 – 100 + 1) + 100) AS random_integer_between_100_and_1000;
random_integer_between_10_and_20 | random_integer_between_50_and_100 | random_integer_between_100_and_1000
---------------------------------+-----------------------------------+-------------------------------------
17 | 95 | 920
(1 row)
Helpful Links:
https://www.vertica.com/docs/9.2.x/HTML/Content/Authoring/SQLReferenceManual/Functions/Mathematical/RANDOM.htm
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