now

Current date and time (start of current transaction); see Section 9.9.5

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

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group: datetime
group label: 时间/日期函数和操作符
lang: en
layout: table-new
pages: functions-datetime.html
prose only: false

Definition PG 18

Current date and time (start of current transaction); see Section 9.9.5

Signatures and overloads

now ( ) → timestamp with time zone → timestamp with time zone

Current date and time (start of current transaction); see Section 9.9.5

now()

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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:f71e9cd4e7c91a820487b6a956f79618dd3ae45b71277403459b676369595f43

Text language: en · wiki-repair-20261023:f71e9cd4e7c91a820487b6a956f79618dd3ae45b71277403459b676369595f43