How to deal with SQL column names that look like SQL keywords?

Question

One of my columns is called from. I can\'t change the name because I didn\'t make it. Am I allowed to do something like SELECT from FROM TableName

Answer 1

While you are doing it - alias it as something else (or better yet, use a view or an SP and deprecate the old direct access method).

SELECT [from] AS TransferFrom -- Or something else more suitable
FROM TableName

Answer 2

Hi I work on Teradata systems that is completely ANSI compliant. Use double quotes " " to name such columns.

E.g. type is a SQL reserved keyword, and when used within quotes, type is treated as a user specified name.

See below code example:

CREATE TABLE alpha1
AS
(
SEL
product1
type_of_product AS "type"
FROM beta1
) WITH DATA
PRIMARY INDEX (product1)

--type is a SQL reserved keyword

TYPE

--see? now to retrieve the column you would use:

SEL "type" FROM alpha1