Error
Error Code:
1245
MariaDB Error 1245: Subquery Cyclic References
Description
Error 1245 indicates that your SQL query contains a subquery or a series of subqueries that create a circular dependency. This means a subquery directly or indirectly references itself, leading to an infinite loop that the database cannot resolve. It typically occurs in complex queries involving recursive CTEs or deeply nested correlated subqueries.
Error Message
Cyclic reference on subqueries
Known Causes
3 known causesImproper Recursive CTEs
A `WITH RECURSIVE` common table expression (CTE) is designed to handle hierarchical data, but if its termination condition is missing or never met, it can lead to a cyclic reference.
Self-Referencing Correlated Subqueries
A correlated subquery that incorrectly refers back to an outer query's alias in a way that creates a circular dependency can trigger this error. This often happens with complex join conditions or nested logic.
Circular View Definitions
This error can occur when two or more views are defined in such a way that they directly or indirectly reference each other, forming a loop that MariaDB cannot resolve during query parsing.
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