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SQL Duplicate Records
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SQL Duplicate Records

EasySQL · PostgreSQL

Problem

UST's QA engineering team needs to identify duplicate test execution records in its test reporting data. A duplicate is defined as multiple executions with the same project, test case, environment, execution date, tester, and status.

Write a PostgreSQL query that reports each duplicated execution combination and its occurrence count.

Requirements

  1. Group records by the complete business key, excluding the unique execution_id.
  2. Return only groups occurring more than once.
  3. Join qa_projects to include the project name and exclude executions belonging to unknown projects.
  4. Order results by project name and test case key.

Schema

qa_projects
ColumnTypeDescription
project_idPKINTUnique QA project identifier
project_nameVARCHAR(100)Name of the UST QA project
test_executions
ColumnTypeDescription
execution_idPKINTUnique test execution record identifier
project_idINTReference to qa_projects
test_case_keyVARCHAR(30)Functional or regression test case key
environmentVARCHAR(30)Environment where the test ran
executed_onDATEDate of test execution
tester_emailVARCHAR(120)Email address of the tester
statusVARCHAR(20)Execution result such as passed or failed
Tablesqa_projectstest_executions
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