PostgreSQL Error 2200C: Invalid Use of Escape Character
PostgreSQL error 2200C (invalid_use_of_escape_character) is raised when an escape character is used incorrectly within a SQL string context, most commonly in LIKE or SIMILAR TO pattern matching clauses. This error is closely tied to how PostgreSQL enforces SQL standards around escape sequences and the standard_conforming_strings configuration setting. Developers migrating queries from other databases like MySQL or SQL Server frequently encounter this error due to differing escape handling conventions.
Top 3 Causes
1. Invalid ESCAPE Clause in LIKE Patterns
The SQL standard strictly requires the ESCAPE clause to contain exactly one character. Passing an empty string or multiple characters triggers error 2200C immediately.
