SQL

1.5k+ posts

Last Updated: 07 March 2025

SQL is a Structured query language used to access and manipulate data in databases. SQL stands for Structured Query Language. We can create,...read more

SQL

DBMS-SQL

Databases

SQL Query Interview Questions

Last Updated: 15 May 2025

SQL or Structured Query Language, is the standard language for managing and manipulating relational databases such as MySQL, Oracle, and Pos...read more

Difference Between Clustered and Non-Clustered Index

Last Updated: 14 May 2025

Indexing is a critical performance optimization technique in SQL Server that helps speed up data retrieval operations. Understanding the dif...read more

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SQL Triggers

Last Updated: 17 April 2025

SQL triggers are essential in database management systems (DBMS). They enable SQL statements to run when specific database events occur such...read more

Last Updated: 15 May 2025

In SQL, a Common Table Expression (CTE) is an essential tool for simplifying complex queries and making them more readable. By defining temp...read more

SQL Commands | DDL, DQL, DML, DCL and TCL Commands

Last Updated: 18 April 2025

SQL commands are crucial for managing databases effectively. These commands are divided into categories such as Data Definition Language (DD...read more

SQL

SQL-Clauses-Operators

Databases

How to Find Nth Highest Salary from a Table?

Last Updated: 06 May 2025

Finding the Nth highest salary in a database table is a common challenge and interview question for SQL enthusiasts and professionals. This ...read more

SQL

Databases

ALTER (RENAME) in SQL

Last Updated: 14 April 2025

In SQL, making structural changes to a database is often necessary. Whether it's renaming a table or a column, adding new columns, or modify...read more

SQL

Databases

SQL | WITH Clause

Last Updated: 12 April 2025

SQL queries can sometimes be complex, especially when you need to deal with multiple nested subqueries, aggregations, and joins. This is whe...read more

SQL Interview Questions

Last Updated: 28 April 2025

Are you preparing for a SQL interview? SQLis a standard database language used for accessing and manipulating data in databases. It stands f...read more

placement preparation

Last Updated: 18 April 2025

Views in SQL are a type of virtual table that simplifies how users interact with data across one or more tables. Unlike traditional tables, ...read more

SQL

Databases

SQL | GROUP BY

Last Updated: 17 April 2025

The SQL GROUP BY clause is a powerful tool used to organize data into groups based on shared values in one or more columns. It's most often ...read more

SQL

Databases

SQL Joins (Inner, Left, Right and Full Join)

Last Updated: 18 April 2025

SQL joins are fundamental tools for combining data from multiple tables in relational databases. Joins allow efficient data retrieval, which...read more

Articles

DBMS

SQL

SQL-Clauses-Operators

DBMS-Join

Databases

Introduction of DBMS (Database Management System)

Last Updated: 07 March 2025

A Database Management System (DBMS) is a software solution designed to efficiently manage, organize, and retrieve data in a structured manne ...read more

SQL Query to Find Second Highest Salary

Last Updated: 11 April 2025

Finding the second-highest salary in SQL is a common requirement in data analysis and SQL interviews. This query is important for applicatio ...read more

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