PostgresDB 42602: Invalid Name

The specified name is invalid.

When encountering the error 42602: Invalid Name in Postgres, the user should immediately check the specific details of the error message to identify the name or identifier causing the issue. This can often be a table name, column name, or other database object name that does not conform to Postgres naming conventions or contains invalid characters.

  1. Review the SQL statement: Look at the SQL statement that triggered the error. The issue is likely with how a name is formatted within this statement.
  2. Check for unquoted identifiers: If the problematic name uses reserved words or contains special characters, it should be enclosed in double quotes. For example, change select * from user to select * from "user".
  3. Verify naming conventions: Ensure the name doesn't start with a number or contain disallowed characters (e.g., hyphens, spaces without quotes, etc.). Postgres names must begin with a letter or an underscore, followed by letters, digits, or underscores.
  4. Execute a query to list objects: If unsure which object the error refers to, use the \dt, \dv, \df, \dE commands in the psql command-line interface to list tables, views, functions, and foreign tables, respectively, to verify the names against your SQL statement.
  5. Check logs: Review the Postgres log files for any additional context about the error. The logs might provide more details on the name that is causing the issue.
  6. Correct and re-run: After identifying and correcting the name in your SQL statement, execute the statement again to ensure the issue is resolved.

By carefully checking the SQL statement and any related database object names against Postgres naming rules, and making necessary adjustments, the error can be resolved.

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PostgresDB 23000: Integrity Constraint Violation
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The XML processing instruction is invalid.
PostgresDB 2200S: Invalid XML Comment
The XML comment is invalid.
PostgresDB 2200N: Invalid XML Content
Content within the XML is invalid.
PostgresDB 2200M: Invalid XML Document
The XML document is invalid.
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The provided data is not a valid XML document.
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Character could not be translated.
PostgresDB 22P03: Invalid Binary Representation
Binary representation of a value is invalid.
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Text representation of a value is invalid.
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