The grid (core) · console.warn

source.mode "derived": `statistics` is not s...

Printed by The grid (core), prefixed [lattice], since 1.52.0.

Warnings reference › source.derived.union.statistics

Identifier: source.derived.union.statistics
Raised by: The grid (core)
Since: 1.52.0

What happened

A relational statistic is computed over one grid's columns, and a union has as many column sets as it has parents. The option does nothing and the union produces its ordinary unioned rows.

The fix

Derive the statistics of a single grid, and union the results if you need several.

Reference

Covered in full at the API reference.