quote_nullable

Returns the given string suitably quoted to be used as a string literal in an SQL statement string; or, if the argument is null, returns NULL. Embedded single-quotes and backslashes are properly doubled. See also Example 41.1.

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group: string
group label: 字符串函数和操作符
lang: en
layout: table-new
pages: functions-string.html
prose only: false

Definition PG 18

Returns the given string suitably quoted to be used as a string literal in an SQL statement string; or, if the argument is null, returns NULL. Embedded single-quotes and backslashes are properly doubled. See also Example 41.1.

Signatures and overloads

quote_nullable ( text ) → text → text

quote_nullable ( anyelement ) → text → text

Converts the given value to text and then quotes it as a literal; or, if the argument is null, returns NULL. Embedded single-quotes and backslashes are properly doubled.

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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:dc13bd7800d6ec00a6365dedb114bab1273fcc9f4487a783968084ef04c4ac39

Text language: en · wiki-repair-20261023:dc13bd7800d6ec00a6365dedb114bab1273fcc9f4487a783968084ef04c4ac39