PostgreSQL Error Reference

Every error, explained

SQLSTATE codes, condition names, root causes, diagnostic queries, and recovery steps — structured for engineers running PostgreSQL in production.

1115 errors documentedFree diagnostics on every pageAll PG versions covered

Showing 888 of 1115 errors

42P16 ERROR

cannot rename inherited constraint “…” — 42P16

invalid_table_definition

PostgreSQL error "cannot rename inherited constraint "…"" (SQLSTATE 42P16, invalid_table_definition): what it means, common causes, and how to fix it.

Syntax Error or Access Rule Violation
42P16 ERROR

inherited constraint “…” must be renamed in child tables too — 42P16

invalid_table_definition

PostgreSQL error "inherited constraint "…" must be renamed in child tables too" (SQLSTATE 42P16, invalid_table_definition): what it means, common causes, and how to fix it.

Syntax Error or Access Rule Violation
42P16 ERROR

column “…” cannot be declared SETOF — 42P16

invalid_table_definition

PostgreSQL error "column "…" cannot be declared SETOF" (SQLSTATE 42P16, invalid_table_definition): what it means, common causes, and how to fix it.

Syntax Error or Access Rule Violation
42P16 ERROR

cannot rename inherited column “…” — 42P16

invalid_table_definition

PostgreSQL error "cannot rename inherited column "…"" (SQLSTATE 42P16, invalid_table_definition): what it means, common causes, and how to fix it.

Syntax Error or Access Rule Violation
42P16 ERROR

inherited column “…” must be renamed in child tables too — 42P16

invalid_table_definition

PostgreSQL error "inherited column "…" must be renamed in child tables too" (SQLSTATE 42P16, invalid_table_definition): what it means, common causes, and how to fix it.

Syntax Error or Access Rule Violation
42P16 ERROR

ON COMMIT can only be used on temporary tables — 42P16

invalid_table_definition

PostgreSQL error "ON COMMIT can only be used on temporary tables" (SQLSTATE 42P16, invalid_table_definition): what it means, common causes, and how to fix it.

Syntax Error or Access Rule Violation
42P17 ERROR

Invalid Object Definition — SQLSTATE 42P17

invalid_object_definition

SQLSTATE 42P17 (invalid_object_definition): The SQL is malformed or references a missing object or privilege.

Syntax Error or Access Rule Violation
42P17 ERROR

functions in index expression must be marked IMMUTABLE — 42P17

invalid_object_definition

PostgreSQL error "functions in index expression must be marked IMMUTABLE" (SQLSTATE 42P17): what it means, common causes, and how to fix it.

Syntax Error or Access Rule Violation
42P17 ERROR

encoding conversion function … returned incorrect result for empty… — 42P17

invalid_object_definition

PostgreSQL error "encoding conversion function … returned incorrect result for empty input" (SQLSTATE 42P17, invalid_object_definition): what it means, common causes, and how to fix it.

Syntax Error or Access Rule Violation
42P17 ERROR

support function number n is invalid for access method … — 42P17

invalid_object_definition

PostgreSQL error "support function number n is invalid for access method …" (SQLSTATE 42P17, invalid_object_definition): what it means, common causes, and how to fix it.

Syntax Error or Access Rule Violation
42P17 ERROR

encoding conversion function … must return type … — 42P17

invalid_object_definition

PostgreSQL error "encoding conversion function … must return type …" (SQLSTATE 42P17, invalid_object_definition): what it means, common causes, and how to fix it.

Syntax Error or Access Rule Violation
42P17 ERROR

encoding conversion to or from “SQL_ASCII” is not supported — 42P17

invalid_object_definition

PostgreSQL error "encoding conversion to or from "SQL_ASCII" is not supported" (SQLSTATE 42P17, invalid_object_definition): what it means, common causes, and how to fix it.

Syntax Error or Access Rule Violation
42P17 ERROR

invalid opclass definition — 42P17

invalid_object_definition

PostgreSQL error "invalid opclass definition" (SQLSTATE 42P17, invalid_object_definition): what it means, common causes, and how to fix it.

Syntax Error or Access Rule Violation
42P17 ERROR

parameter “…” must be specified — 42P17

invalid_object_definition

PostgreSQL error "parameter "…" must be specified" (SQLSTATE 42P17, invalid_object_definition): what it means, common causes, and how to fix it.

Syntax Error or Access Rule Violation
42P17 ERROR

unrecognized collation provider: … — 42P17

invalid_object_definition

PostgreSQL error "unrecognized collation provider: …" (SQLSTATE 42P17, invalid_object_definition): what it means, common causes, and how to fix it.

Syntax Error or Access Rule Violation
42P17 ERROR

cannot split partition “…” only to add a DEFAULT partition — 42P17

invalid_object_definition

PostgreSQL error "cannot split partition "…" only to add a DEFAULT partition" (SQLSTATE 42P17, invalid_object_definition): what it means, common causes, and how to fix it.

Syntax Error or Access Rule Violation
42P17 ERROR

collation “default” cannot be copied — 42P17

invalid_object_definition

PostgreSQL error "collation "default" cannot be copied" (SQLSTATE 42P17, invalid_object_definition): what it means, common causes, and how to fix it.

Syntax Error or Access Rule Violation
42P17 ERROR

cannot split to partition “…” together with partition “…” — 42P17

invalid_object_definition

PostgreSQL error "cannot split to partition "…" together with partition "…"" (SQLSTATE 42P17, invalid_object_definition): what it means, common causes, and how to fix it.

Syntax Error or Access Rule Violation
42P17 ERROR

“…” is not partitioned — 42P17

invalid_object_definition

PostgreSQL error ""…" is not partitioned" (SQLSTATE 42P17, invalid_object_definition): what it means, common causes, and how to fix it.

Syntax Error or Access Rule Violation
42P17 ERROR

cannot merge partition “…” together with partition “…” — 42P17

invalid_object_definition

PostgreSQL error "cannot merge partition "…" together with partition "…"" (SQLSTATE 42P17, invalid_object_definition): what it means, common causes, and how to fix it.

Syntax Error or Access Rule Violation
42P17 ERROR

cannot drop all the publications from a subscription — 42P17

invalid_object_definition

PostgreSQL error "cannot drop all the publications from a subscription" (SQLSTATE 42P17, invalid_object_definition): what it means, common causes, and how to fix it.

Syntax Error or Access Rule Violation
42P17 ERROR

publication “…” is not in subscription “…” — 42P17

invalid_object_definition

PostgreSQL error "publication "…" is not in subscription "…"" (SQLSTATE 42P17, invalid_object_definition): what it means, common causes, and how to fix it.

Syntax Error or Access Rule Violation
42P17 ERROR

operator class “…” of access method … is missing support function n… — 42P17

invalid_object_definition

PostgreSQL error "operator class "…" of access method … is missing support function n for type …" (SQLSTATE 42P17, invalid_object_definition): what it means, common causes, and how to fix it.

Syntax Error or Access Rule Violation
42P17 ERROR

no pg_constraint entry for trigger “…” on table “…” — 42P17

invalid_object_definition

PostgreSQL error "no pg_constraint entry for trigger "…" on table "…"" (SQLSTATE 42P17, invalid_object_definition): what it means, common causes, and how to fix it.

Syntax Error or Access Rule Violation