Recover the source column name from a synthetic split-by path. Split pivoting produces paths of the form <split_val_1>|...|<source_col>; per-column config (formatters, aggregate styling, …) is always keyed on the trailing source column.
<split_val_1>|...|<source_col>
Recover the source column name from a synthetic split-by path. Split pivoting produces paths of the form
<split_val_1>|...|<source_col>; per-column config (formatters, aggregate styling, …) is always keyed on the trailing source column.