In JavaScript, the functions wrapped with parenthesis are called “Immediately Invoked Function Expressions" or "Self Executing Functions.The purpose of wrapping is to the namespace and control the visibility of member functions. It wraps the code inside a function scope and decreases clashing with other libraries. This is what we call ... Read More

As we know that PHP provides us the function named mysql_query to delete an existing database.ExampleTo illustrate this we are deleting a database named ‘Tutorials’ with the help of PHP script in the following example −           Deleting MySQL Database                  

To understand this concept, we are using the data from table ‘Information’ as follows −mysql> Select * from Information; +----+---------+ | id | Name    | +----+---------+ | 1  | Gaurav  | | 2  | Ram     | | 3  | Rahul   | | 4  | Aarav   ... Read More

The default sort order in MySQL tables is ascending. Whenever we use ORDER BY clause to sort out the rows of a table, MySQL gives output in ascending order, with the smallest value first. Consider the following example from a table named ‘student’ −mysql> Select * from student order by ... Read More

Followings are the limitations for replicating stored procedure and functions −Type of Action − Actually the replication of stored procedure and functions depends upon the type of action. If the action, embedded in stored procedures, is nondeterministic (random) or time-based then it may not replicate properly. By their very nature, ... Read More

Suppose currently we are using a database named ‘query’ and it is having the following tables in it −mysql> Show tables in query; +-----------------+ | Tables_in_query | +-----------------+ | student_detail  | | student_info    | +-----------------+ 2 rows in set (0.00 sec)Now, following is a stored procedure, which will give ... Read More

In both the cases i.e. on not using ‘RIGHT’ or ‘LEFT’ keyword in the query, MySQL will return the result by taking it as INNER JOIN query. It is because the only difference between RIGHT, LEFT and INNER JOIN is the keyword of RIGHT or LEFT. To understand it, we ... Read More

Actually, the elements listed in the ENUM column specifications are assigned index numbers which begin with 1. Here the term “index” is indicating towards the position within the list of enumeration values and they are not related to table indexes. With the help of following examples we can show that ... Read More

With the help of the following MySQL query we can check the character sets of all the tables in a particular database −mysql> Select Column_name, TABLE_NAME, CHARACTER_SET_NAME FROM        INFORMATION_SCHEMA.Columns Where TABLE_SCHEMA = 'db_name';ExampleFor example, the query below returns the character sets of all the tables along with ... Read More

Compound INTERVAL unit keywords are made up of two keywords and separated by an underscore (_). For using them in MySQL the unit values must be enclosed in single quotes and separated by space.Example − Following query will add 2 years and 2 months in the date value.mysql> Select timestamp('2017-10-22 ... Read More