numeric() — PostgreSQL JSON function

numeric(): convert money to numeric. PostgreSQL json functions — signature, volatility, version applicability and an illustrative example.

The Sev-1 Admin
The Sev-1 Admin  ·  2 min read

Summary

numeric is a PostgreSQL built-in function in the JSON Functions group. PostgreSQL’s system catalog (pg_proc) describes it as: “convert money to numeric”.

Signature

numeric has 8 documented overloaded forms:

numeric(money) → numeric
numeric(numeric, integer) → numeric
numeric(integer) → numeric
numeric(real) → numeric
numeric(double precision) → numeric
numeric(bigint) → numeric
numeric(smallint) → numeric
numeric(jsonb) → numeric

Argument and return types are taken from the pg_proc catalog; internal type names are shown using their readable SQL spellings (for example int4 is shown as integer). (Derived from the catalog — see the linked reference for the canonical documentation.)

Classification

  • Category: JSON Functions
  • Kind: Function
  • Volatility: STABLE — Marked STABLE — within a single statement it returns a consistent result for the same arguments, but the result can change between statements.
  • Returns: numeric

Example

Illustrative form (replace placeholder values with your own data):

SELECT numeric(NULL::money);

The example above is illustrative and is meant to show calling syntax only; consult the linked PostgreSQL documentation for exact semantics, edge cases and accepted argument combinations.

Version applicability

numeric is present across the surveyed releases (PostgreSQL 15, 16, 17, 18, 19). On older major versions, behaviour may differ in detail — always check the documentation for the version you run.

Related & references

Reference: PostgreSQL documentation — JSON Functions.