log

Base 10 logarithm

English manual coverage begins with PostgreSQL 7.1. Source history and runtime observations have their own recorded version boundaries.

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group: math
group label: 数学函数和操作符
lang: en
layout: table-new
pages: functions-math.html
prose only: false

Definition PG 18

Base 10 logarithm

Signatures and overloads

log ( numeric ) → numeric → numeric

Base 10 logarithm

log ( double precision ) → double precision → double precision

Base 10 logarithm

log ( b numeric, x numeric ) → numeric → numeric

Logarithm of x to base b

Compare versions

Complete source facts

documentation revision

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Source references

Original manual reference

Full definition and evidence JSON

Definition sources

center · PostgreSQL 18 · wiki-repair-20261023:2919afa74bd962f924e44fa4af1c80dafe4c39a1ca38c6a717fbe96f6c6ca93c

Text language: en · wiki-repair-20261023:2919afa74bd962f924e44fa4af1c80dafe4c39a1ca38c6a717fbe96f6c6ca93c