Error
Error Code:
2200G
PostgreSQL Error 2200G: Incompatible Data Type Assignment
Description
Error 2200G, 'most specific type mismatch', indicates that PostgreSQL encountered an operation where it could not determine a unique, most specific data type for an expression or argument. This typically occurs when attempting to perform operations (like assignment, comparison, or function calls) with values of different, incompatible data types that cannot be implicitly converted.
Error Message
most specific type mismatch
Known Causes
4 known causesImplicit Type Conversion Failure
PostgreSQL failed to implicitly convert one data type to another during an operation because no suitable or unambiguous conversion rule exists between the involved types.
Ambiguous Function or Operator Call
When multiple overloaded functions or operators exist for different data types, PostgreSQL could not find a single 'most specific' match for the given arguments, leading to ambiguity.
Inserting Incompatible Data
An attempt was made to insert or update a column with a value whose data type is fundamentally incompatible with the column's defined type, even after considering potential conversions.
Expressions with Mixed Incompatible Types
Combining values of different, incompatible data types within a complex expression (e.g., in a `CASE` statement, `UNION` query, or arithmetic operation) where a common supertype cannot be resolved.
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