Error
Error Code:
1660
MySQL Error 1660: Partitioning Fields Too Long
Description
This error indicates that the combined byte length of the columns designated as partitioning fields for a table exceeds MySQL's internal limits. It typically occurs when attempting to create or alter a partitioned table with an excessive number of columns or large data types within the partitioning expression.
Error Message
The total length of the partitioning fields is too large
Known Causes
3 known causesExcessive Partitioning Columns
Using a large number of columns within the partitioning expression, leading to a combined length that exceeds the allowed limit.
Large Data Types in Key
Employing data types such as VARCHAR or VARBINARY with substantial maximum lengths as part of the partitioning key, which consume more bytes.
Storage Engine Limits Exceeded
The sum of the internal lengths of all partitioning fields surpasses the specific byte limits imposed by the chosen storage engine (e.g., InnoDB, NDB).
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