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num_nulls

Returns the number of null arguments.

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

Reading PG 18·Select a recorded version

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Comparison Functions And Operators
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functions-comparison.html
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Definition PG 18

Returns the number of null arguments.

Signatures and overloads

num_nulls ( VARIADIC "any" ) → integer → integer
Returns the number of null arguments.

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Source references

Full definition and evidence JSON

Definition sources

center · PostgreSQL 18 · wiki-repair-20261023:63300fe62fc0f54ae49bd2a205bfb433c531ef5eb5864c6beed3faaac27bac23

Text language: en · wiki-repair-20261023:63300fe62fc0f54ae49bd2a205bfb433c531ef5eb5864c6beed3faaac27bac23