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SQL and LeetCode Coding Basics
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SQL and LeetCode Coding Basics

EasySQL · PostgreSQL

Problem

I remember three easy programming questions (similar to leetcode).

Using the provided question bank, write a SQL query that returns three questions classified as easy programming questions.

Output

  1. Return exactly three rows, when at least three matches exist.
  2. Include question_id, title, and topic.
  3. Sort by question_id in ascending order before selecting the three rows.

Schema

programming_questions
ColumnTypeDescription
question_idPKINTUnique identifier for the question
titleVARCHAR(150)Question title
difficultyVARCHAR(20)Question difficulty classification
question_typeVARCHAR(30)Type of question
topicVARCHAR(50)Primary topic associated with the question
Tablesprogramming_questions
Interviewer

Your question is SQL and LeetCode Coding Basics. Start with the requirements and the one table 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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