PostgreSQL/Math Functions/exp
exp(dp or numeric) exponential
<source lang="sql">
postgres=# -- exp(dp or numeric) exponential postgres=# postgres=# select exp(1.0);
exp
2.7182818284590452
(1 row) postgres=#
</source>
exp(x): Returns the e constant (2.71828...), to the power of x
<source lang="sql">
postgres=# postgres=# -- exp(x): Returns the e constant (2.71828...), to the power of x postgres=# SELECT exp(0.0) AS one, postgres-# exp(1.0) AS e, postgres-# exp(2.0) AS "e squared";
one | e | e squared
+--------------------+--------------------
1.0000000000000000 | 2.7182818284590452 | 7.3890560989306502
(1 row) postgres=#
</source>