string_data_right_truncation String Data Right Truncation — SQLSTATE 01004

The server reports SQLSTATE 01004 (string_data_right_truncation), a condition in the Warning class.

• The error is written to the server log and returned to the client carrying SQLSTATE 01004.
• Any driver (libpq, JDBC, psycopg, npgsql, pgx) surfaces this code in its error object so you can branch on it programmatically.

Severity: WARNING  |  PostgreSQL versions: 12, 13, 14, 15, 16, 17

Reproduce with the exact statement and read the full message in the server log (raise log_min_messages / set log_min_error_statement for more context).

01004 belongs to Class 01 — Warning. In this class, the statement succeeded but the server attached a warning.

The first two characters (01) identify the error class, so application code can match the whole class via 01000 when the specific code is not needed.

Read the warning text — the statement completed, but review the data or query it flagged (truncation, deprecated feature, eliminated nulls) before relying on the result.

Reference: PostgreSQL error codes — Class 01 (Warning).