log(b, x): Returns the base b logarithm of x : log « Math Functions « PostgreSQL

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PostgreSQL » Math Functions » log   log(b, x): Returns the base b logarithm of x postgres=# postgres=# -- log(b, x): Returns the base b logarithm of x postgres=# select log(exp(1.0), 10.0) AS natural_log;     natural_log --------------------  2.3025850929940457 (1 row) postgres=#                     Related examples in the same category 1.  log(b numeric, x numeric) logarithm to base b 2.  log(dp or numeric) base 10 logarithm 3.  log(x): Returns the base 10 logarithm of x 4.  log(10, 12.0) AS log_12, log(3, 12.0) AS "log 12, base 3";

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