Let us see an example to get the count of each distinct value in a column. Firstly, we will create a table. The CREATE command is used to create a table. mysql> create table DistinctDemo1 - > ( - > id int, ... Read More

To compile and execute a program in C#, you just need to click the Run button or press F5 key to execute the project in Microsoft Visual Studio IDE. Compile a C# program by using the command-line instead of the Microsoft Visual Studio IDE − Open a text editor ... Read More

To remove any database, we need to use DROP command in MySQL. Here is the syntax. DROP DATABASE yourDatabaseName; First, let us check how many databases are present in MySQL. Here is the query for the same. mysql> SHOW DATABASES; The following is the output. ... Read More

We can use DISTINCT and COUNT together in a single MySQL query. Firstly, let us create a table. The CREATE command is used to create a table. mysql> create table DistCountDemo - > ( - > id int, - > ... Read More

Cable modem is a hardware device that is used to connect the computer with the Internet Service Provider (ISP) through the local cable TV line. It has two interfaces – one to the cable TV network outlet and the other to a computer or television or set-top box. Configuration Cable ... Read More

Let’s say we have a table and now there is a requirement to add AUTO_INCREMENT on column name. For that, use the MODIFY command. Here, we will create a demo table first. mysql> create table AddingAutoIncrement -> ( -> Id int, ... Read More

InnoDB is a general-purpose storage engine that balances high reliability and performance. Since MySQL 5.6, InnoDB is the default MySQL storage engine. InnoDB can be used for various purposes. Here are some of them − It can be used for transaction purpose i.e. all ACID properties. InnoDB can be ... Read More

We can return 0 for NULL in MySQL with the help of IFNULL() method. The syntax of IFNULL() is as follows. IFNULL(YOUREXPRESSION, 0); Let us see an example. First, we will create a table. mysql> create table NullDemoWithZero -> ( -> ... Read More

Here we use one user input array and the size of the group. And we create sub array on the size of the group and we just reverse it. If the size of the groups(p) is not multiple of the size of the array(n) then the last group will less ... Read More

ZEROFILL pads the displayed value of the field with zeros up to the display width set in the column definition. Let us understand the role of zero fill in MySQL using an example. Creating a table with two columns, one has zerofill and the second one does not. The query ... Read More