SQLSTATE 42601 ERROR Class 42: Syntax Error or Access Rule Violation

syntax_error Syntax Error — SQLSTATE 42601

The SQL statement is malformed.

PG 12, 13, 14, 15, 16, 17, 18 Official docs
Last reviewed May 2025 Grounded in source

Symptoms

The SQL statement is malformed.

  • The error is written to the server log and returned to the client carrying SQLSTATE 42601.
  • Any driver (libpq, JDBC, psycopg, npgsql, pgx) surfaces this code in its error object so you can branch on it programmatically.
  • PL/pgSQL can trap it by name: EXCEPTION WHEN syntax_error THEN.

Environment

Severity: ERROR  |  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).

Root Cause

The parser could not understand the statement at the reported position.

Common causes:

  • Typos, missing commas, or unbalanced parentheses.
  • Reserved words used as identifiers without quoting.
  • Version-specific syntax not available here.
  • Incorrect dollar-quoting in a function body.

Diagnostic Queries

Recovery

Steps to resolve 42601:

  1. Read the position marker in the error — it points at the offending token.
  2. Quote identifiers that collide with reserved words using double quotes.
  3. Confirm the syntax exists in your PostgreSQL version.
  4. Test the statement in psql to isolate it from the application layer.

Reference: PostgreSQL error codes — Class 42 (Syntax Error or Access Rule Violation).

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