PostgresDB 22P06: Nonstandard Use of Escape Character
Non-standard use of an escape character.
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What is
PostgresDB 22P06: Nonstandard Use of Escape Character
?
When encountering the error 22P06: Nonstandard Use of Escape Character in PostgreSQL, you should directly inspect the query or function that triggered this error. The issue usually arises from a literal containing a backslash (\) that PostgreSQL interprets in a way that doesn't match the standard SQL behavior, due to the standard_conforming_strings setting.
- Check the
standard_conforming_stringsSetting:
Run the command to see if standard conforming strings are enabled: SHOW standard_conforming_strings;- If this returns
off, it means backslashes are treated as escape characters in string literals, which can lead to the mentioned error if not handled correctly. - Adjust Your Query or Data:
- If
standard_conforming_stringsisoff, and you cannot change it, ensure that any backslash in your literals is doubled (\\). For example, change'C:\Data\'to'C:\\Data\\'. - Alternatively, use the
Estring prefix to explicitly mark strings containing backslashes as escape string constants, e.g.,E'C:\\Data\\'.
- If
- Change the Session or Global Setting (if possible and appropriate):If your application relies on standard-conforming strings, you might want to enable them for your session or globally, though this might have wider implications:
- For the current session:
SET standard_conforming_strings = on;- To change it globally, you would typically need to change the postgresql.conf file, which requires access to the server configuration and a restart. Since there's no database administrator and immediate action is needed, focus on session-level changes or adjusting the queries themselves.
- Review and Test Your Queries:
- Before executing queries, especially those dynamically generating string literals containing backslashes, review them to ensure they comply with the current
standard_conforming_stringssetting. - Test your queries in a development environment with both settings (
onandoff) to ensure compatibility and avoid this error.
- Before executing queries, especially those dynamically generating string literals containing backslashes, review them to ensure they comply with the current
By following these steps, you can directly address the specific error and ensure your queries run correctly under your current PostgreSQL configuration.
Attached error:
PostgresDB 22P06: Nonstandard Use of Escape Character
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