random

Returns a random value in the range 0.0 <= x < 1.0

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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

Returns a random value in the range 0.0 <= x < 1.0

Signatures and overloads

random ( ) → double precision → double precision

Returns a random value in the range 0.0 <= x < 1.0

random ( min integer, max integer ) → integer → integer

Returns a random value in the range min <= x <= max. For type numeric, the result will have the same number of fractional decimal digits as min or max, whichever has more.

random ( min bigint, max bigint ) → bigint → bigint

Returns a random value in the range min <= x <= max. For type numeric, the result will have the same number of fractional decimal digits as min or max, whichever has more.

random ( min numeric, max numeric ) → numeric → numeric

Returns a random value in the range min <= x <= max. For type numeric, the result will have the same number of fractional decimal digits as min or max, whichever has more.

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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-20261023:59f3b3cc24dde80f0a270f080583796b866c6b835076aae56f3a3034506246e8

Text language: en · wiki-repair-20261023:59f3b3cc24dde80f0a270f080583796b866c6b835076aae56f3a3034506246e8