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Java and SQL Basics
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Java and SQL Basics

EasySQL · PostgreSQL

Problem

Explain your background with Java and SQL.

Demonstrate the SQL portion by returning active engineers who have recorded experience with both Java and SQL. Include engineers even when one experience value is unknown.

Output

  1. One row per qualifying engineer with employee_id, employee_name, java_years, and sql_years.
  2. Exclude inactive engineers and engineers missing either skill record.
  3. Order by employee_name, then employee_id.

Schema

engineers
ColumnTypeDescription
employee_idPKINTUnique engineer identifier
employee_nameVARCHAR(100)Engineer name
employment_statusVARCHAR(20)Current employment status
engineer_skills
ColumnTypeDescription
skill_idPKINTUnique skill record identifier
employee_idINTEngineer associated with the skill
skill_nameVARCHAR(50)Recorded technical skill
years_experienceINTYears of experience, when known
Tablesengineersengineer_skills
Interviewer

Your question is Java and SQL Basics. Start with the requirements and the two tables in the Question tab.

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