EC
HV002
PostgreSQLERRORNotableForeign Data Wrapper ErrorHIGH confidence

FDW dynamic parameter value needed

What this means

SQLSTATE HV002 is raised when a foreign data wrapper requires a dynamic parameter value that was not provided — for example, a required FDW option that was omitted from the CREATE SERVER or CREATE FOREIGN TABLE definition.

Why it happens
  1. 1A required FDW option (e.g., host, dbname, table_name) is missing from the foreign server or foreign table definition
How to reproduce

Missing required FDW option.

trigger — this will error
trigger — this will error
CREATE SERVER remote_pg FOREIGN DATA WRAPPER postgres_fdw;
-- missing host and dbname options

expected output

ERROR:  required option "host" is missing

Fix

Provide all required options in the FDW object definition

WHEN When creating a foreign server or foreign table.

Provide all required options in the FDW object definition
CREATE SERVER remote_pg
  FOREIGN DATA WRAPPER postgres_fdw
  OPTIONS (host 'remote.host', dbname 'remotedb', port '5432');

Why this works

Consult the FDW documentation for the required options and include them all in the CREATE SERVER or CREATE FOREIGN TABLE statement.

Sources
Official documentation ↗

Class HV — Foreign Data Wrapper Error

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