Error
Error Code:
1564
MySQL Error 1564: Invalid Partition Function
Description
Error 1564, "This partition function is not allowed," indicates that a function specified within a `PARTITION BY` clause for a table is not supported or permitted by MySQL. This typically occurs during `CREATE TABLE` or `ALTER TABLE` statements when attempting to use a function that is either non-deterministic, too complex, or not designed for partitioning key expressions.
Error Message
This partition function is not allowed
Known Causes
3 known causesUnsupported Partitioning Function
The function used in the `PARTITION BY` clause (e.g., `MD5()`, `UUID()`, user-defined functions) is not among the deterministic functions allowed by MySQL for partitioning.
Incompatible Key Data Type
The chosen partitioning function is incompatible with the data type of the column designated as the partitioning key, leading to an invalid expression.
Complex Expressions in Partitioning
Attempting to use overly complex expressions, subqueries, or non-scalar values directly within the `PARTITION BY` clause, which MySQL does not support.
Solutions
Coming SoonDetailed step-by-step solutions for this error are being prepared. In the meantime, try these general troubleshooting tips:
General 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