Github user liuyu000 commented on a diff in the pull request: https://github.com/apache/trafodion/pull/1644#discussion_r202873886 --- Diff: docs/sql_reference/src/asciidoc/_chapters/sql_statements.adoc --- @@ -2963,18 +2963,22 @@ column-definition is: <<< ``` data-type is: - char[acter] [(length [characters])] - [character set char-set-name] - [upshift] [[not]casespecific] + char[acter] [length [characters]] + [character set char-set-name] + [upshift] [[not]casespecific] | char[acter] varying (length [characters]) - [character set char-set-name] - [upshift] [[not]casespecific] - | varchar (length) [character set char-set-name] + [character set char-set-name] + [upshift] [[not]casespecific] + | varchar (length [characters]) + [character set char-set-name] + [upshift] [[not]casespecific] + | varchar2 (length [characters]) + [character set char-set-name] + [upshift] [[not]casespecific] + | nchar [length [characters]] --- End diff -- Same as above. `length [characters]` is optional. ![default](https://user-images.githubusercontent.com/20532956/42792008-e8a9cb4c-89a5-11e8-8066-3a39caa307f3.png) ---