1. HackerRank From software engineering to data analytics, HackerRank is one of the best platforms for practicing coding interview questions.HackerRank’s SQL practicesuite has hundreds of questions available for you to practice. You can filter the questions by their difficulty levels: easy, medium, ...
pl/sql-work been created from solution of hackerrank examples sqloracleplsqlsqldeveloper UpdatedMay 1, 2018 PLSQL Useful SQL and PL/SQL Oracle scripts for everyday use on SQL*Plus or SQL Developer sqlscriptsoracleplsqloracle-databasesqlplussqldeveloper ...
A PostgreSQL database featuring table creation, data insertion, and SQL queries for CRUD operations, constraints, JOINs, aggregations, filtering, and data manipulation. postgressql UpdatedMar 29, 2025 TravelAI is a dedicated team focused on enhancing travel experiences with personalized AI-driven recomm...
Practice Regularly: Solve SQL problems on platforms like LeetCode, HackerRank, or SQLZoo to sharpen your skills. Optimize Queries: Focus on writing efficient queries by using proper indexing and understanding query plans. Know Advanced Concepts: Be prepared to discuss window functions, CTEs, normalizat...
SQLZoo: Offers interactive SQL tutorials and quizzes to practice SQL queries for various database systems. LeetCode: Provides SQL challenges and contests to test and improve your SQL skills. HackerRank: Offers a SQL domain with a wide range of SQL problems and challenges. ...
This statement addsSomalias a new country into thecountriestable. It is a good practice to specify the column names and values when inserting rows into the table. Read a table When we want to look up the data that we stored in the database, we use theSelectstatement. ...
TSqlStrong - T-Sql type checker that detects improper joins, possibly null value operations, enumeration check constraint violations, incorrect use of temporary table at call site, and more (by John Suder) Other sp_whoisactive (by Adam Machanic) SQL# SQLCLR functions (by Sql Quantum Lift)...
Practice Platforms SQLBolt HackerRank SQL Challenges LeetCode Database Problems AI-Powered Tools AI2sql: Generate SQL queries from natural language descriptions using AI. How to Use This Cheat Sheet Learning: Use this guide as a starting point to learn SQL syntax and concepts. Reference: Quickly...
HackerRank.com - SQL interactive exercises and many others languages SQL-EX.ru - Practical skills of SQL language (Russian, English) Free Azure certification training courses SQL Server Tutorial (by Tutorial Gateway) Intro to SQL: Querying and managing data T-SQL Tutorial (by TutorialSpoint) T-SQ...
Useful links, scripts, tools and best practice for Microsoft SQL Server Database - ktaranov/sqlserver-kit