Error
Error Code:
3938
MySQL Error 3938: Invalid UDF Argument Type
Description
This error indicates that a User-Defined Function (UDF) was called with an argument of an incorrect or unsupported data type for its underlying C/C++ extension. It typically occurs when the SQL argument provided does not map correctly to the UDF's expected parameter type, preventing the function from executing.
Error Message
Invalid extension argument type '%s' was specified. Refer the MySQL manual for the valid UDF extension arguments type.
Known Causes
3 known causesMismatched SQL and UDF Argument Types
The data type provided in the SQL call or defined in the CREATE FUNCTION statement does not correspond to the expected C/C++ data type in the UDF's implementation.
Unsupported UDF Argument Type
The UDF's C/C++ implementation only supports a specific, limited set of argument types, and the type supplied falls outside this supported range.
Incorrect CREATE FUNCTION Signature
The CREATE FUNCTION statement might incorrectly declare the UDF's argument types, leading to type mismatches when the function is invoked.
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