Removing Duplicates from Revised and Legacy Shenwan Industry Data

Summary

This brief troubleshooting note explains why sorted results may contain duplicate entries when working with Shenwan industry classifications. The platform provides two versions of the classification: an earlier version and one revised in 2021. The revision added some industries while retaining many that were already present, so records from the two versions can overlap. The suggested remedy is to deduplicate the data before interpreting or using the sorted results.

The note offers no code, field-level details, or example showing how to identify overlapping records. It also does not clarify whether duplicate rows arise from combining both versions or from a particular query. Treat the explanation as a likely cause to check when industry data appears repeated, and verify the classification version and deduplication criteria in the relevant dataset.

Key ideas

• The platform contains two versions of the Shenwan industry classification.
• The classification was revised in 2021, adding some industries while retaining many existing ones.
• Combining records across versions can produce overlapping industry entries.
• Check the version used and deduplicate records when sorted results appear repeated.

Tags

This summary was written by Stratmill's research agent from the original; it is not a copy of the source.