#43
Duplicate Employee ID Detection
EASYAggregationPOSTGRESQL
Problem Description
You are analyzing an employee database that may have data quality issues. Your task is to find all employee IDs (`emp_id`) that appear more than once in the table.
Return a list of duplicate `emp_id` values, ordered by `emp_id` ascending.
Topics
aggregation
Asked at Companies
atlassian
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