`{stat}` on `{col}` (source #{n}) computed over {covered} of {total} matching rows (windowed source); hold the data in a memory source for whole-dataset statistics.

Warnings reference › stat.windowed:*:*

Identifier

stat.windowed:*:*

Raised by

The grid (core)

Since

1.17.0

What happened

The statistic was computed over the rows this windowed source is holding, not over every row that matches. The number is real and it is a sample: it describes the window, not the dataset. The message carries the coverage so you can judge how far off it might be. Development builds only; the key is the statistic and the column, so a long session cannot grow the de-duplication set.

The fix

Hold the data in a memory source for an exact figure, or compute the statistic where the whole set lives - on the server, or in the adapter through pushdown.

Reference

Covered in full at the API reference.