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No, SQL Server doesn’t offer a direct equivalent to MySQL’s ENUM data type, but you can replicate similar functionality with a combination of VARCHAR, and a CHECK constraint. This allows you to restrict the possible values for a column, just like ENUM does in MySQL. This article will look at how SQL Server can handle ENUM-like behavior and examples of how it is being utilized in your database design. Enum in MySQL In MySQL, the ENUM is a data type that is used to create a column with a fixed set of predefined values which allows data integrity. ... Read More
Removing Value from an enum in MySQL We can use the ALTER command to remove a value from an ENUM in MySQL. The ALTER database command lets you modify the type of a column, add or remove columns, or even modify ENUM values in a current database. You cannot delete a value from an ENUM type. To accomplish that task, you change the column definition - by changing the list of allowed values. This way, the structure of the table is not changed while the set of possible values for the ENUM column is changed. Example Let us first create ... Read More
When designing a database, setting default values for certain fields will improve data integrity. In MySQL, ENUM data type allows you to specify predefined values for a column such as status (complete or incomplete). This article helps you to set a default value for ENUM columns, to ensure that even if the data is missing, a suitable value is automatically assigned. Inserting a default value with ENUM data type We can do this with the help of the DEFAULT attribute of the ENUM data type. The DEFAULT attribute causes an ENUM data type to have a default value when a ... Read More
Stored Procedures Stored Procedures is a group of pre-compiled SQL statements that is stored in a database and can be reused anytime. It allows you to do many things in one command. So doing several activities in a database will be easier and quicker than before. A stored procedure can be called from SQL commands as well as applications like Python, Java, or PHP. Syntax Following is the syntax to create a stored procedure − CREATE PROCEDURE procedure_name AS BEGIN -- SQL statements END; Example Let us create a stored procedure where it ... Read More
Counting ENUM items in MySQL In MySQL, ENUM is a data type where it stores the predefined and fixed values making them ideal for categories such as sizes, grades, and statuses. Knowing the frequency of each value inside ENUM columns will allow you to make data-driven decisions. Below, we'll learn how to use MySQL's GROUP BY and COUNT() functions to get the count of ENUM values. GROUP BY(): It is used for aggregating data, as it follows you to perform calculations, such as totals, and averages. ... Read More
In MySQL, a trigger is a group of SQL statements performed or fired when a specified event is taken place on tables. The events can include INSERT, UPDATE, and DELETE. Such triggers are used for automating repetitive work, ensuring integrity in data, and keeping audit records without human involvement. The FOLLOWS keyword in MySQL allows the creation of several triggers for the same event and also allows you to select the order of execution. Creating Multiple Triggers for the Same Event When working with triggers, sometimes you might need to define several triggers for the same ... Read More
Natural numbers are a set of positive integers, which are commonly used for counting and ordering. They begin from 1 and continue infinitely. In some contexts, it may also include 0. Here, we are going to learn about different approaches to removing all odd numbers from a given array using C#. Problem Description We are given an array, and we need to remove all the odd numbers from it. The resulting array should only contain even numbers. Example 1 Input: array = {1, 2, 3, 4, 5, 6} Output: {2, ... Read More
When updating a database, you may get a situation to add a new column to capture specific predefined values. For Example, if you are managing student data there will be a column gender that has fixed options like (Female or Male), in this case, an ENUM data type will be perfect. ALTER Command To add a new enum column to an existing MySQL table, you can use the ALTER command. The MySQL ALTER command is used to modify the existing structure of a table. It enables you to make several kinds of changes, such as ... Read More
In MySQL, the ENUM is a data type that is used to create a column with a fixed set of values. It is helpful for the fields that have limited alternatives, such as categories, statuses, and color codes. However, as your application evolves, you might need to add more values to the list such as new colors. MySQL allows us to modify ENUM values without dropping and recreating the column. Adding New Value to an ENUM column For adding new values in an ENUM column in MySQL, you shall use the ALTER TABLE command with the MODIFY Keyword. For ... Read More
In this article, we will learn to generate n distinct random numbers within a specified range, ensuring that no number is repeated in Java. Generating random numbers is a common problem in various applications such as simulations, games, and testing. Problem Statement In this problem, we are given a number n, and we need to generate n unique random numbers within a defined range, ensuring that no number is repeated. The range can be specified by the user, or it can be a default range based on the problem's requirements. Input int n = 10; Output [4, 6, 9, 1, ... Read More