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SQL-Clauses

14 posts

SQL | ON Clause

Last Updated: 13 May 2018

The join condition for the natural join is basically an EQUIJOIN of all columns with same name. To specify arbitrary conditions or specify columns to join, the ON Clause i...read more

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Technical Scripter

MySQL | PARTITION BY Clause

Last Updated: 06 March 2019

A PARTITION BY clause is used to partition rows of table into groups. It is useful when we have to perform a calculation on individual rows of a group using other rows of...read more

How to Use GROUP BY and HAVING in SQL?

Last Updated: 24 December 2024

The GROUP BY and HAVING clauses in SQL are two of the most powerful tools available for summarising and analysing data. These clauses enable developers and analysts to eff...read more

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Difference Between COMMIT and ROLLBACK in SQL

Last Updated: 19 December 2024

In SQL, transaction control is essential for managing changes in a database effectively. COMMIT and ROLLBACK are two crucial Transaction Control Language (TCL) commands th...read more

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Difference Between

Difference between JOIN and UNION in SQL

Last Updated: 15 March 2023

Pre-requisites: JOIN, UNIONJOIN in SQL is used to combine data from many tables based on a matched condition between them. The data combined using the JOIN statement resul...read more

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Difference Between

Difference between DELETE and TRUNCATE

Last Updated: 28 November 2024

When managing large datasets in SQL, it's essential to understand the differences between various commands used for removing data. Two commonly used SQL commands for data ...read more

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Difference Between

Difference between DROP and TRUNCATE in SQL

Last Updated: 02 August 2024

In SQL, the DROP and TRUNCATE commands are used to remove data, but they operate differently. DROP deletes an entire table and its structure, while TRUNCATE removing only ...read more

Difference Between

Difference between Where and Having Clause in SQL

Last Updated: 20 June 2025

In SQL, the WHERE and HAVING clauses are essential for filtering data and refining query results. While both serve the purpose of applying conditions, they are used at di...read more

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Difference Between

Difference Between JOIN, IN and EXISTS Clause in SQL

Last Updated: 19 May 2021

SEQUEL widely known as SQL, Structured Query Language is the most popular standard language to work on databases. We can perform tons of operations using SQL which include...read more

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Difference Between

SQL - SELECT DATE

Last Updated: 02 December 2024

SQL (Structured Query Language) can work with datetime data types. SELECT DATE is an important concept when retrieving records that filter data based on date. Whether you ...read more

SQL SELECT IN Statement

Last Updated: 29 November 2024

The IN operator in SQL is used to compare a column's value against a set of values. It returns TRUE if the column's value matches any of the values in the specified list, ...read more

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SQL TOP, LIMIT, FETCH FIRST Clause

Last Updated: 29 November 2024

SQL TOP, LIMIT, and FETCH FIRST clauses are used to retrieve a specific number of records from a table. These clauses are especially useful in large datasets with thousand...read more

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Order of Execution of SQL Queries

Last Updated: 02 December 2024

Understanding the order of execution of SQL queries is important for writing efficient, accurate, and optimized SQL code. SQL executes its clauses in a predefined sequence...read more

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Last Updated: 11 September 2023

In SQL, a Cartesian Join is also called a Cross Join, it performs the cartesian product of records of two or more joined tables. A Cartesian product matches each row of on...read more

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