Reserved words

Informix®

With Informix, it is possible to create database objects with reserved words.

CREATE TABLE table ( char CHAR(10) );

Indeed this is not good practice, but Informix SQL allows this to be backward compatible when introducing a new keyword in the SQL syntax.

Most other database systems do not allow reserved words as database identifiers. If your legacy code is using SQL reserved words of the target database SQL syntax, an error will be thrown at CREATE TABLE execution.

Dameng®

Dameng does not allow SQL reserved keywords as SQL object names.

Verify that your existing database schema does not use Dameng SQL words such as "desc", "alias", "order".

Solution

See Dameng documentation for reserved keywords.