How to restrict

["Campbell, Lance" <lance@xxxxxxxxxxxx>]

PostgreSQL 10.x

 

What is the best way to restrict the values on a text field to make sure they only contain particular values:  Example:  The field “type” can only contain the values of “X”, “Y” and “Z”.  Would a trigger be the best strategy?  Or is there a special SQL type I should use in this particular case? 

 

Thanks,

 

LANCE CAMPBELL

Software Architect

 

Web Services

Public Affairs

Contact the Webtools Team

217.333.0382

lance@xxxxxxxxxxxx

 

 

 

Under the Illinois Freedom of Information Act any written communication to or from university employees regarding university business is a public record and may be subject to public disclosure.