ALTER TABLE Missing column_constraint explanation

When Who What
2018-02-02 10:31:18 Stephen Frost (sfrost) Closed in commitfest 2018-01 with status: Committed
2018-02-01 12:59:45 Stephen Frost (sfrost) New status: Ready for Committer
2018-01-14 04:08:19 Vik Fearing (xocolatl) Added xocolatl as reviewer
2018-01-14 02:14:59 Stephen Frost (sfrost) Deleted annotation "new patch" from 82f53e77-6ee5-d4be-bd5a-f9cfe245e83d@lab.ntt.co.jp
2018-01-14 02:11:18 Stephen Frost (sfrost) Added annotation "new patch" to 82f53e77-6ee5-d4be-bd5a-f9cfe245e83d@lab.ntt.co.jp
2018-01-14 02:05:48 Stephen Frost (sfrost) Changed reviewers to Amit Langote (amitlan)
2018-01-14 02:05:48 Stephen Frost (sfrost) Changed authors to Lætitia AVROT (arkhena)
2018-01-14 02:05:48 Stephen Frost (sfrost) Changed committer to sfrost
2018-01-14 02:04:02 Stephen Frost (sfrost) Attached mail thread CAB_COdgOoA=G18RhWPoW8zZ+xOxTns7xD7psHA=ct+XccokbUg@mail.gmail.com
2018-01-14 02:04:02 Stephen Frost (sfrost) Created patch record