Error
Error Code:
42P22
PostgreSQL Error 42P22: Indeterminate Collation
Description
Error 42P22, 'indeterminate collation', indicates that PostgreSQL cannot unambiguously determine which collation to use for a string operation. This typically occurs during comparisons, sorting, or string manipulations when multiple collations are available or implicitly convertible, leading to an ambiguous choice.
Error Message
indeterminate collation
Known Causes
3 known causesAmbiguous Collation in Operations
This error occurs when a string operation (like comparison or sorting) involves multiple possible collations, and PostgreSQL cannot determine which one to apply without explicit instruction.
Mixing Data with Different Collations
Performing operations on string data from different sources (e.g., columns, literals) that have distinct implicit or explicit collations can lead to ambiguity.
Function Argument Collation Conflicts
Calling a function with string arguments where the function or arguments have conflicting or unspecified collation requirements can trigger this error.
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