strConcat
Slot-wise concatenation (ADR-2026-10-23-12): concat(other) appends element-wise; a null on either side yields null (the null doctrine - no empty-string defaulting).
Parameters
s | the left STRING Series |
other | the right STRING Series (equal length) |
Returns
the concatenated STRING Series.
Throws
DataFrameException on length mismatch or non-STRING.