The array.includes() method of JavaScript is used to check whether an array contains a specified element.The syntax is as follows −array.includes(ele, start)Above, the parameter ele is the element to search for. The start parameter is the position to begin the search with.Let us now implement the array.includes() method in JavaScript ... Read More

The array.flatMap() method of JavaScript is used to flatten the input array element into a new array.The syntax is as follows − array.flatMap(function callback(current_value, index, Array))Let us now implement the array.flatMap() method in JavaScript −Example Live Demo    Ranking Points    Is any point equal to 550 from ... Read More

The array.entries() method of JavaScript is used to return an Array Iterator object with key/value pairs.The syntax is as follows − array.entries()Let us now implement the array.entries() method in JavaScript −Example Live Demo    Ranking Points    Is any point equal to 550 from the key-value pairs...   ... Read More

For this, you can use ORDER BY DATE(). Let us first create a table. Here, we have a column with type DATE and another with type ENUM −mysql> create table DemoTable    -> (    -> JoiningDate date,    -> Status ENUM('Good', 'Excellent', 'Bad')    -> ); Query OK, 0 ... Read More

To display the only date from timestamp value, use the FROM_UNIXTIME() method in MySQL. Let us first create a table −mysql> create table DemoTable    -> (    -> timestampValue bigint    -> ); Query OK, 0 rows affected (0.70 sec)Insert some records in the table using insert command −mysql> ... Read More

For this, use sub query along with WHERE clause while using the MySQL UPDATE command. Let us first create a table −mysql> create table DemoTable    -> (    -> Id int,    -> Name varchar(20)    -> ); Query OK, 0 rows affected (0.82 sec)Insert some records in the ... Read More

You can use CHAR_LENGTH() along with the WHERE clause. Let us first create a table −mysql> create table DemoTable    -> (    -> FullName varchar(50)    -> ); Query OK, 0 rows affected (1.75 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('Chris Brown'); ... Read More

To split a column, you need to use SUBSTRING_INDEX() in MySQL. Let us first create a table −mysql> create table DemoTable    -> (    -> Name varchar(40)    -> ); Query OK, 0 rows affected (1.80 sec)Insert some records in the table using insert command −mysql> insert into DemoTable ... Read More

Let us first create a table −mysql> create table DemoTable    -> (    -> JoiningDate datetime    -> ); Query OK, 0 rows affected (0.59 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('2015-01-21'); Query OK, 1 row affected (0.15 sec) mysql> insert into ... Read More

Yes, it is possible using the # symbol. Let us first create a table −mysql> create table DemoTable    -> (    -> Id int NOT NULL AUTO_INCREMENT PRIMARY KEY , # Creating a sequence Number    -> FirstName varchar(20), # Creating a column to store name    -> Age ... Read More