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MySQL Query

45 posts

How To Get Last Record In Each Group In MySQL?

Last Updated: 04 April 2024

In MySQL, we group the data using the GROUP BY clause. There can be a need to access these groups and get the latest record in each group, for example, tracking the last l...read more

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SELECT DISTINCT vs GROUP BY in MySQL

Last Updated: 08 February 2024

In MySQL, the two most common ways of managing and retrieving unique values are with SELECT and GROUP BY. However, they are used for different reasons. With SELECT, we can...read more

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How to Reset Primary Key Sequence in MySQL?

Last Updated: 04 April 2024

In MySQL, the primary key maintains data integrity and uniqueness. However, there are instances where the primary key sequence might fall out of sync, leading to potential...read more

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How to Select Random Row in MySQL

Last Updated: 21 June 2024

In database operations, selecting random rows from a table is a common requirement for various applications, such as gaming, content recommendation, and statistical sampli...read more

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How to Find Records From One Table Which Don't Exist in Another MySQL

Last Updated: 28 May 2024

MySQL is a free and open-source relational database management system written in C and C++ that is extremely popular among developers. Like other relational database manag...read more

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Parameterize an MySQL IN Clause

Last Updated: 06 February 2024

In MySQL, the IN clause is a powerful tool for filtering data based on a specified list of values. To enhance flexibility and security, parameterizing the IN clause is a r...read more

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How to Escape a Single Quote in MySQL

Last Updated: 10 July 2024

MySQL is an open-source relational database management system (RDBMS) that is widely used for managing and organizing structured data. MySQL is designed to run on various ...read more

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Retrieve Records from Multiple Tables in MySQL

Last Updated: 21 June 2024

In relational databases like MySQL, data is often spread across multiple tables to maintain normalization and avoid redundancy. To effectively work with such data, you nee...read more

How to Insert a Line Break VARCHAR String in MySQL

Last Updated: 05 February 2024

When dealing with textual data in MySQL databases, maintaining proper formatting is important for readability and clarity. One common formatting requirement is to insert l...read more

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MySQL Describe Table

Last Updated: 17 June 2024

MySQL is an open-source relational database management system (RDBMS). It is one of the most popular databases globally, known for its reliability, and scalability. MySQL...read more

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How to Select Row With Max Value in MySQL?

Last Updated: 05 February 2024

MYSQL is an open-source Relation Database Management System that stores data in tables with rows and columns. It is formed from two words – ‘My’ and ‘SQL’. ‘My’ is the nam...read more

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How to Rename a Column in MySQL?

Last Updated: 10 June 2024

Renaming columns in MySQL is a frequent task to keep data organized and flexible. It helps adjust database layouts to fit new needs without losing information. This articl...read more

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How to Remove Duplicate Records Except a Single Record in MySQL?

Last Updated: 09 July 2024

In MySQL, remove duplicate records while preserving one representative entry using a DELETE statement with a self-join. Match records based on criteria like identical valu...read more

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How to Get Multiple Counts With Single Query in MySQL

Last Updated: 05 February 2024

MySQL is an open-source Relational Database Management System that stores data in a structured format using rows and columns. MYSQL language is easy to use as compared to...read more

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How to Get Last Records in One to Many Relationship in MySQL

Last Updated: 05 February 2024

MySQL is a widely used relational database management system (RDBMS) that provides a robust and scalable platform for managing and organizing data. MySQL is an open-source...read more

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