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SQL Interview Experience
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SQL Interview Experience

EasySQL · PostgreSQL

Problem

Tell me about your experience with SQL questions in interviews or projects.

For this hands-on response, write a query that summarizes the recorded SQL work associated with each project. Include projects without completed SQL work and classify experience based on the number of completed questions.

Output

  1. One row per project, including projects with no completed questions.
  2. Columns: project_name, completed_sql_questions, avg_score, latest_completed_at, and experience_band.
  3. Sort by completed question count descending, then project name ascending.

Schema

sql_projects
ColumnTypeDescription
project_idPKINTUnique project identifier
project_nameVARCHAR(100)Name of the SQL project
owner_nameVARCHAR(100)Person associated with the project
sql_questions
ColumnTypeDescription
question_idPKINTUnique SQL question identifier
project_idINTRelated project identifier
question_titleVARCHAR(150)Short description of the SQL question
statusVARCHAR(20)Question state, such as completed, draft, or skipped
scoreDECIMAL(5,2)Recorded evaluation score
completed_atDATEDate the question was completed
Tablessql_projectssql_questions
Interviewer

Your question is SQL Interview Experience. Start with the requirements and the two tables in the Question tab.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.

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CodePostgreSQL
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