ERF
Run the Gaussian error function on an expression that evaluates to a floating-point number or a compatible data type.
ERF(number)
For example:
premdb=# select erf(0.123456789) from sys.const;
erf
-------------------
0.138601545055623
(1 row)
premdb=# select avg_att, erf(avg_att) from team order by 1 desc limit 3;
avg_att | erf
---------+-----
75.286 | 1
59.944 | 1
54.041 | 1
(3 rows)
Parent topic:Mathematical Functions