PostgresDB 2200D: Invalid Escape Octet

Invalid escape octet in input.
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PostgresDB 2200D: Invalid Escape Octet

 ?

When encountering the error 2200D: Invalid Escape Octet in PostgreSQL, the user should immediately check the query or data causing this error. This error often occurs when attempting to insert or manipulate strings that contain escape sequences not recognized by PostgreSQL, particularly when the standard_conforming_strings setting is off, and the escape string syntax is used improperly.

  1. Identify the Query or Data Causing the Error: Look at the application logs or PostgreSQL logs to identify the exact query that caused the error. PostgreSQL logs can be checked (if you have access) by finding the log file, which location is specified in the postgresql.conf file under the log_directory parameter. The query that caused the error should be near the 2200D error code in the logs.
  2. Examine the Query or Data: Once you've identified the problematic query, examine any string literals or escape sequences within it. Look for backslashes (\) that are intended as escape characters. In particular, check if there are octal escape sequences (e.g., \001) that might be incorrectly formed or out of the expected range.
  3. Test the Query: If possible, attempt to run the query manually in a PostgreSQL client, such as psql, isolating the problematic part. You can use the E string prefix to explicitly specify escape string syntax if necessary. For example, if you suspect a string literal is the issue, try:
  4. SELECT E'YourStringHere';
  5. Replace YourStringHere with the actual string from your query, ensuring it’s correctly escaped.
  6. Adjust the Query or Data: Once you've identified the specific issue, adjust the string literals in your query to ensure they are correctly escaped. If using octal escapes, ensure they are correctly formatted and valid. If you were attempting to use a backslash as a literal backslash in a string, make sure to double it (\\) if standard_conforming_strings is off, or consider turning standard_conforming_strings on for your session or database to avoid these issues:
  7. SET standard_conforming_strings = ON;
  8. Re-run the Query: After adjusting the query or data, re-run it to ensure the error is resolved.

Note: These steps assume you have the ability to modify and run queries against your PostgreSQL database and have sufficient permissions to view logs or change session-level settings if necessary.

Attached error: 
PostgresDB 2200D: Invalid Escape Octet
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