Error
Error Code:
3987
MySQL Error 3987: Function Character Set Mismatch
Description
This error indicates that a MySQL function was called with data (typically string arguments) that uses a character set it does not support. It signifies an incompatibility between the function's internal character set handling capabilities and the encoding of the data it attempts to process.
Error Message
The function %s does not support the character set '%s'.
Known Causes
3 known causesFunction Character Set Limitations
Some MySQL functions are designed with specific character set assumptions and may not correctly process data encoded in more complex or multi-byte character sets like UTF-8MB4 for certain operations.
Mismatched Data Encoding
The character set of the input data (e.g., a column's content or a string literal) does not align with the character sets that the invoked function is capable of handling or expects.
Inconsistent Database Character Sets
The character set configuration at the database, table, or column level might conflict with the character set required by a particular function, especially in environments with mixed encodings.
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