Join by the district PCODE in the same reference release, rather than by a translated district name. Retain unmatched rows and the boundary version so a spelling difference or changed geography cannot silently disappear.
| Input or condition | How to interpret it |
|---|---|
| Name-only join | Bangkok names can have multiple transliterations; a match is ambiguous. |
| Duplicate PCODE | Check whether your table is a time series before allowing repeated geography. |
| Unmatched row | Keep it in an exception table; do not assign it to a nearby district. |
Code illustrates a review procedure, not an observed result. Replace illustrative inputs with verified records; missing values deliberately remain unknown.
input = {"district_code": "TH1001", "value": 12}
# Keep district codes as strings; verify the code exists in
# the chosen boundary release before joining by identifier.
assert isinstance(input["district_code"], str)A reproducible table of district identifiers, values and join exceptions. It supports regional reporting, not cadastral parcel ownership.