autocreated ddl does not respect the 'length' mapping-constraint

class JobJournal {
	String name
	Date startTime
	Date endTime
	JobStatus status
	String details
	String createdBy = 'xxx'
	String updatedBy = 'xxx'
	Date dateCreated
	Date lastUpdated
	
	static constraints = {
		name(blank: false, nullable: false)
		startTime(nullable: false)
		endTime(nullable: true)
		status(nullable: false)
		details(blank: false, nullable: true)
		createdBy(display: false, nullable: true)
		updatedBy(display: false, nullable: true)
		dateCreated(display: false, nullable: true)
		lastUpdated(display: false, nullable: true)
	}
	
	static mapping = {
		table 'tjobjournal'
		columns {
			id column: 'oid', sqlType: 'integer'
			name column: 'name', sqlType: 'char', length: 50
			startTime column: 'starttime', sqlType: 'datetime'
			endTime column: 'endtime', sqlType: 'datetime'
			status column: 'status', sqlType: 'varchar', length: 8
			details column: 'details'/*, sqlType: 'text'*/
			createdBy column: 'opin', sqlType: 'char', length: 3
			updatedBy column: 'opia', sqlType: 'char', length: 3
			dateCreated column: 'stdn', sqlType: 'datetime'
			lastUpdated column: 'stda', sqlType: 'datetime'
			version column: 'oca', sqlType: 'integer'
		}
	}
	
	String toString() {
		return name
	}
}

create table tjobjournal (
  oid integer identity not null,
  name char not null,
  starttime datetime not null,
  endtime datetime null,
  status varchar(255) not null,
  details varchar(255) null,
  opin char null,
  opia char null
  stdn datetime null,
  stda datetime null,
  oca integer not null,
  primary key (oid));