Aliases in SQL are temporary names given to tables or columns to make them more readable in a query. An alias only exists for the duration of the query. Syntax examples show how to alias a table using a nickname after the table name in a SELECT statement. Column aliases can also be specified by aliasing the table and then referencing columns. Aliases are commonly used in join queries to distinguish columns from different tables that may have the same name.

1. By : Dhirendra Chauahn

2. SQL
Aliases

3. Aliases
“The Nick Name of table is called Aliases”
SQL aliases are used to give a table, or a column in a
table, a temporary name.
Aliases are often used to make column
names more readable.
An alias only exists for the duration of the query.

4. Syntax
SELECT * FROM TableName Nick_Name;
Aliases
SELECT * FROM employees e;

5. Aliases

6. Alias Column
Syntax
SELECT alias.colum_nname, alias.column_name
FROM TableName Alias;
Example
SELECT e.Name , e.Salary
FROM employees e;

7. Alias in Join Table
Syntax
SELECT * FROM table1 alias1 , table2 alias2 ;
Example
SELECT * FROM employees e , Salary S;

8. Aliases

9. Aliases

10. THANK
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