EC
01000
PostgreSQLWARNINGCriticalWarningHIGH confidence

warning

What this means

SQLSTATE 01000 is the generic warning code. Postgres emits it when a statement succeeds but the server wants to inform the client of a non-fatal condition that may indicate unexpected behaviour.

Why it happens
  1. 1A statement completed successfully but the server detected a non-fatal anomaly
  2. 2Custom application code raised a generic WARNING via RAISE WARNING
How to reproduce

Raising a generic warning from PL/pgSQL.

trigger — this will error
trigger — this will error
DO $ BEGIN
  RAISE WARNING 'Something looks off but continuing';
END $;

expected output

WARNING:  Something looks off but continuing

Fix

Inspect and handle the specific warning subcode

WHEN When a generic 01000 warning surfaces in application logs.

Why this works

Check SQLSTATE and the warning message text. If the warning is expected (e.g., truncation), document it. If it is unexpected, investigate the query or stored procedure emitting it.

What not to do

✕ Suppress all warnings globally

Warnings often signal data quality issues or deprecated usage that will become errors in a future version.

Sources
Official documentation ↗

Class 01 — Warning

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