As : AS : Select Query MySQL TUTORIALS

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As


Defining a new structural element (table or column) by aliasing an existing value.

A common use for this is to create a shorthand reference to elements with long names to make the SQL statements shorter.

SELECT <columns>
FROM <existing_table_name>
AS <new_table_name>

is simply a reference that exists for the duration of the SQL statement.

SELECT t1.first_name
FROM employee
AS t1;



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