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Duplicate DQ Check Records
A medium SQL interview practice problem on DataDriven. Write and execute real sql code with instant grading.
- Domain
- SQL
- Difficulty
- medium
- Seniority
- junior, mid
Problem
A downstream team reported that some entries in the data quality checks table appear more than once for the same table and column combination. Surface any table-and-column pairs that have multiple records, along with the duplicate count.
Practice This Problem
Solve this SQL problem with real code execution. DataDriven runs your SQL queries against a live PostgreSQL database and grades it instantly.