Digital Computers use Binary number system to represent all types of information inside the computers. Alphanumeric characters are represented using binary bits (i.e., 0 and 1). Digital representations are easier to design, storage is easy, accuracy and precision are greater.There are various types of number representation techniques for digital number ... Read More

To style every enabled element, use the CSS :enabled selector.ExampleYou can try to run the following code to style enabled elementLive Demo                    input:enabled {             background: blue;          }                              Subject          Student:          Age:          

Indentation is an important feature of Python syntax. Code blocks in function, class or loops are required to follow same indent level for statements in it. The tabnanny module in Python's standard library is able to detect any violation in this stipulation.This module is primarily intended to be used in ... Read More

To overlap elements, use the CSS z-index property. You can try to run the following code to implement the z-index property and set image behind the textExampleLive Demo                    img {             position: absolute;             left: 0px;             top: 0px;             z-index: -1;          }                           This is demo text.    

To update an entire row in MySQL, use UPDATE command. You need to know the primary key column. The syntax is as follows to update an entire row.UPDATE yourTableName SET yourColumnName1 = ’yourValue1’ ,yourColumnName2 = ’yourValue2’ ,    yourColumnName3 = ’yourValue3’ ,.......................N    WHERE yourPrimaryKeyColumnName = yourValue;To understand the above ... Read More

You can use DISTINCT with RLIKE operator to find a list of city names that do not start with vowels.The syntax is as follows −SELECT DISTINCT yourCityColumnName FROM yourTableName WHERE yourCityColumnName NOT RLIKE ‘ ^[AEIOUaeiou].*$’;To understand the above syntax, let us create a table. Here, we have a column for ... Read More

To convert the date time to a number in MySQL, the syntax is as follows −SELECT UNIX_TIMESTAMP(yourColumnName) as anyVariableName FROM yourTableName;To understand the above syntax, let us create a table. The query to create a table is as follows −mysql> create table DateTimeToNumberDemo    -> (    -> Id int ... Read More

Convert dd/mm/yyyy string to Unix timestamp with the help of UNIX_TIMESTAMP(). The syntax is as follows −SELECT UNIX_TIMESTAMP(STR_TO_DATE(yourColumnName, '%d/%m/%Y')) as anyVariableName FROM yourTableName;To understand the above syntax, let us create a table. The query to create a table is as follows −mysql> create table ConvertddmmyyyyInUnixTimeStamp    -> (    -> ... Read More

You can update boolean value using UPDATE command. If you use the BOOLEAN data type, MySQL internally convert it into tinyint(1). It can takes true or false literal in which true indicates 1 to tinyint(1) and false indicates 0 to tinyint(1).The syntax is as follows −UPDATE yourTableName SET yourColumnName = ... Read More

You can use if() from MySQL to count duplicate records. The syntax is as follows −SELECT yourColumnName, COUNT(*) AS anyVariableName, IF (    COUNT(*)>1, "Duplicate Records", "Not Duplicate records") as anyVariableName FROM yourTableName group by yourColumnName;To understand the above syntax, let us create a table. The query to create a ... Read More