The select statement can also include one or more expressions, which allow you to manipulate the data retrieved.
select expression [, expression]... from table_list
An expression is any combination of constants, column names, functions, subqueries, or case expressions, connected by arithmetic or bitwise operators and parentheses.
If any table or column name in the list does not conform to the rules for valid identifiers, set the quoted_identifier option on and enclose the identifier in double quotes.
