MySQL

Introduction Of MySQL

Start with MySQL Server

Syntax In MySQL

Select In MySQL

Distinct In MySQL

Where In MySQL

And & Or In MySQL

Order By In MySQL

Insert Into In MySQL

Update In MySQL

Delete In MySQL

Injection In MySQL

Select Limit In MySQL

Like In MySQL

Wildcards In MySQL

Aliases In MySQL

Joins In MySQL

Inner Join In MySQL

Left Join In MySQL

Right Join In MySQL

Union In MySQL

Create DB In MySQL

Create Table In MySQL

DataTypes In MySQL

Normalization

Functions In MySQL

Keys & Level of Abstraction

Codd's Twelve Rules

MySQL subjective question

MySQL Interview question

MySQL Objective question

MySQL FAQS

RDMS FAQS

Oracle Interview Questions

Alias is use to create an assumed name, but that can be temporarily a table or a column heading.

Syntax for columns

SELECT columnname AS alias_name
FROM tablename 
WHERE Clause ;

Syntax for table

SELECT columnname 
FROM tablename AS alias_name
WHERE Clause ;

Here we have shown some examples

Example

SELECT fname as Name
FROM studinfo ;

Making alias of more than one column in a single command.

Example

SELECT fname as Name , lname as lastname 
FROM studinfo ;

The where condition also use to filter the results according to the specifird conditions

Example

SELECT fname as Name , lname as lastname 
FROM studinfo 
WHERE sid> 105;

In the above code we can also use the Order by conditions.

we can also create an alias on a table, the alias for the table is called table alias. Like the column alias, the 'AS' keyword is optional so you can omit it also. We can use the table alias in those statement that contains INNER JOIN, LEFT JOIN, self join clauses, and in subqueries.