Error
Error Code:
1641
MySQL Error 1641: Duplicate Condition Declaration
Description
Error 1641 occurs in MySQL when you attempt to declare a condition name or a signal statement with an identifier that is already in use within the same scope. This typically happens in stored procedures, functions, or triggers, preventing the database from unambiguously referencing the intended condition.
Error Message
Duplicate condition information item '%s'
Known Causes
3 known causesRedundant CONDITION Declaration
Attempting to `DECLARE CONDITION` with the same name multiple times within the same stored program (procedure, function, or trigger).
Conflicting SIGNAL Definitions
Defining multiple `SIGNAL` statements that refer to the same condition name or SQLSTATE within a block where only one is expected or allowed.
Scope Overlap in Nested Blocks
A condition name declared in an outer block is re-declared with the same name in an inner, nested block without proper scope management.
Solutions
Coming SoonGeneral Troubleshooting Tips
- Check the error message carefully for specific details
- Review recent changes that might have caused the error
- Search for the exact error code in the official documentation
- Check log files for additional context
- Try restarting the application or service