Error code
PostgreSQL 42883
POSTGRESQL42883
Database Error Code· An error code returned by a database server such as PostgreSQL or MySQL.
What it means
undefined_function — no function matches the call signature.
How to fix it
- Confirm the function exists with \df <name> in psql.
- Cast arguments to the expected types explicitly in the call.
- Install or create the function and ensure the schema is in the search_path.
Not affiliated with PostgreSQL. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.
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