What is the difference between AS and IS in a stored procedure?

AS is used to assign an alias to a column or table in SQL, while IS is used to compare values or check for null values.

• AS is used in SELECT statements to assign a temporary name to a column or table

• AS...read more

As used for  changing the column name as alias name and table name as alias name 

Is used for specific where condition 

Where column name is null