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ALTER statement in MySQL

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Hello and welcome everyone. In this article, we will learn about the ALTER table statement in MySQL. Let’s go. MongoDB with .Net Core course link => https://www.udemy.com/mongodb-with-net-core-sagar-jaybhay/ C# basic course click on: https://www.udemy.com/learn-csharp-with-sagar-jaybhay/  Web API 2- .Net Core In depth In 5 Hours click on: https://www.udemy.com/web-api-2-net-core-in-depth-in-5-hrs-with-sagar-jaybhay/ MySQL ALTER command is used to modify the table, view an existing database. When you have completed your database design and after that, you realize some of the information was left out when creating a database. You want to change without losing existing data, and then you can change data using ALTER command. MySQL ALTER command is used to add a column with an existing table, add multiple columns, drop a column, modify a column, rename a column, and rename the table. ALTER command also used to add and drop constraints on the existing table. ...
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Order By Clause in MySQL

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Hello and welcome everyone. In this article, we will learn about the Order By Clause in MySQL. Let’s go. MongoDB with .Net Core course link => https://www.udemy.com/mongodb-with-net-core-sagar-jaybhay/ C# basic course click on: https://www.udemy.com/learn-csharp-with-sagar-jaybhay/  Web API 2- .Net Core In depth In 5 Hours click on: https://www.udemy.com/web-api-2-net-core-in-depth-in-5-hrs-with-sagar-jaybhay/ MySQL Order by clause is used to sort the records or data in ascending or descending order. Order by clause allows us to sort records or data by a single column or multiple columns in ascending or descending order. There are two key using in Order by clause:          ASC: - sorting data or records by ascending order.          DESC: - sorting data or records by descending order. Syntax:          SELECT column_name_1, column_n...
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MySQL Constraint – PRIMARY KEY

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C# basic course click on: https://www.udemy.com/learn-csharp-with-sagar-jaybhay/  Web API 2- .Net Core In depth In 5 Hours click on: https://www.udemy.com/web-api-2-net-core-in-depth-in-5-hrs-with-sagar-jaybhay/ Hello everyone in the previous article we learn about MySQL Constraint – UNIQUE and in this article, we will learn PRIMARY KEY constraint with example. Let’s go. MongoDB with .Net Core course link => https://www.udemy.com/mongodb-with-net-core-sagar-jaybhay/ What is the PRIMARY KEY? MySQL PRIMARY KEY constraint uniquely identifies each row in a table and also it creates a unique index for accessing the table will access faster. The columns of a Primary Key cannot have null values in MySQL and it must contain unique values. A Primary key has only one on a table, if the primary key used with multiple fields, then they are called a Composite Key. Syntax 1 for creating PRIMARY KEY with CREATE table statement.      ...
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