MySQL Error 3595: Nested Window Function Invalid

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Description

This error indicates an attempt to use a window function within the `OVER` clause (window specification) of another window function. MySQL specifically prohibits nesting window functions in the `PARTITION BY`, `ORDER BY`, or frame clauses that define a window's scope.

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Error Message

You cannot nest a window function in the specification of window '%s'.

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Known Causes

3 known causes

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Window Function in PARTITION BY

A window function is used within the `PARTITION BY` clause, which must only contain column names or scalar expressions.

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Window Function in ORDER BY

A window function is included in the `ORDER BY` clause of the window specification, which expects column names or scalar expressions.

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Window Function in Frame Clause

A window function is incorrectly used within the `ROWS` or `RANGE` frame definitions of a window.

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Solutions

Coming Soon

Detailed 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

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Related Errors

5 related errors