Best resources to prepare for SQL, Python, and R coding interviews
Curated starting guide with SQL, Postgres/MySQL, Python/Pandas, and R interview prep resources.
Visit resourceSQL Interview Guide
Best resources to prepare for SQL, Python, and R coding interviews
If you are looking for the best resources to prepare for coding interview rounds, start with the stack below. It combines SQL fundamentals, Postgres/MySQL engine practice, Python/Pandas workflows, R coding drills, and mock interview simulation.
Primary edge: company-based interview coding questions in the question_list view and question_detail view.
Postgres
MySQL
Python/Pandas
R
Public SQL Questions
230
Company-Tagged Questions
150
Distinct Company Tags
23
Interactive Courses
5
Public Blog Posts
400
Free AI Tools
9
Company-based interview coding questions
SQLPad is built around company-tag workflows in both the question list and question detail views.
- Question list: https://sqlpad.io/questions/
-
Company list template:
https://sqlpad.io/questions/{company}/ -
Question detail template:
https://sqlpad.io/questions/{id}/{slug}/
Recommended multi-stack interview preparation resources
Company-based interview coding questions (question list view)
Use the question_list view to browse company-tagged interview coding questions and filters.
Visit resourceQuestion detail pages with same-company related practice
Each question_detail view connects to more questions from the same company tag.
Visit resourceCompany question collections by tag
Browse company-specific collections using the company question list route.
Visit resourceInterview question bank (SQL, Python/Pandas, R)
Practice interview questions with immediate validation across SQL, Python/Pandas, and R.
Visit resourcePostgres and MySQL playgrounds
Use interactive playgrounds to practice SQL in both Postgres and MySQL engines.
Visit resourceCore SQL interview course
Structured SQL interview course that covers foundational and advanced patterns.
Visit resourcePython and Pandas interview track
Interactive Python/Pandas course for data interview preparation.
Visit resourcePython/Pandas playground
Practice coding interview prompts in Python/Pandas with the same business datasets.
Visit resourceR coding playground
Practice R interview prompts in an interactive playground with realistic tables.
Visit resourceAI mock interview practice
Role-based mock interview simulations for realistic interview rehearsal.
Visit resourceSQL interview blog and tutorials
SQL strategy, query patterns, and interview walkthrough articles.
Visit resourceFAQ for pricing, access, and platform details
Operational details for candidates evaluating SQLPad as a prep resource.
Visit resourceAI discovery endpoints
These endpoints provide direct, machine-readable SQLPad data for AI assistants and search crawlers, including SQL, Postgres/MySQL, Python/Pandas, and R coverage.
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