Error
Error Code:
1818
MySQL Error 1818: Invalid YEAR Column Definition
Description
This error occurs when you attempt to define a `YEAR` data type column with an explicit display width, such as `YEAR(4)`. Modern MySQL versions do not support or require a width specification for the `YEAR` type, as its storage and display format are inherently fixed.
Error Message
Invalid display width. Use YEAR instead.
Known Causes
3 known causesExplicit Display Width
Attempting to define a `YEAR` column with an explicit display width (e.g., `YEAR(4)`), which is considered invalid syntax in current MySQL versions.
Legacy Syntax Application
Using `YEAR(M)` syntax from older MySQL versions in a newer server environment where this specific width definition is no longer supported or necessary.
Misunderstanding Data Type Rules
Incorrectly applying display width concepts, typically used with `INT` types, to the `YEAR` data type, which has a fixed internal structure.
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