Let us first create a table −mysql> create table DemoTable (    AdmissionDate date ); Query OK, 0 rows affected (0.73 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('2019-08-31'); Query OK, 1 row affected (0.17 sec) mysql> insert into DemoTable values('2019-09-01'); Query OK, 1 ... Read More

To set a custom value for NULL values, use the UPDATE command along with IS NULL property in a stored procedure. Let us first create a table −mysql> create table DemoTable (    Id int,    FirstName varchar(50) ); Query OK, 0 rows affected (0.67 sec)Insert some records in the ... Read More

The autoincrement in MySQL gives a unique number every time. By default, it starts at 1. If you want to start from another number, then you need to change the auto-increment value with the help of ALTER command or you can give value at the time of table creation.Let us ... Read More

Let us first create a table −mysql> create table DemoTable (    StudentId int NOT NULL AUTO_INCREMENT PRIMARY KEY,    StudentName varchar(50),    StudentAge int ); Query OK, 0 rows affected (0.72 sec)Insert some records in the table using insert command −mysql> insert into DemoTable(StudentName, StudentAge) values('Chris', 21); Query OK, ... Read More

For this, you can use COUNT() along with DISTINCT. The COUNT() method is to count the records. However, the DISTINCT returns distinct records, whereas COUNT() method counts those unique records. Let us first create a table −mysql> create table DemoTable (    PhoneNumber bigint ); Query OK, 0 rows affected ... Read More

To order, use the ORDER BY DESC clause. With that, since we want a single ID, which should be the highest, use LIMIT 1. This will fetch the row with highest ID. Let us first create a table −mysql> create table DemoTable (    Id int,    FirstName varchar(50) ); ... Read More

The HTML5 Semantics refers to the semantic tags that provide meaning to an HTML page. In HTML5 the tags are divided into two categories - semantic and non-semantic. HTML5 brings several new semantic tags to the HTML.Some HTML5 Semantic tags are −TagsExplanationfigureIt specifies an image with different formats.articleIt specifies an ... Read More

The HTML form action attribute defines where to send the form data when a form is submitted in an HTML document.SyntaxFollowing is the syntax −Let us see an example of HTML Form action Attribute −Example Live Demo    body {       color: #000;       height: ... Read More

The HTML Window sessionStorage property allow us to store key/value pairs data in a web browser only for one session that means the data is deleted when the browser tab is closed.SyntaxFollowing is the syntax −window.sessionStorageLet us see an example of HTML Window sessionStorage Property −Example Live Demo   ... Read More

The HTML Window self property returns the current window of the browser.SyntaxFollowing is the syntax −window.selfLet us see an example of HTML Window self Property −Example Live Demo    body {       color: #000;       height: 100vh;       background-color: #8BC6EC;       ... Read More