anchor.diff:  ~~~~~~~~~~
   
   .Date Parts
  -[options="header,footer",cols="s,m,m,m"]
  +[options="header,footer,autowidth",cols="s,m,m,m"]
   |===
   | date part | abbrevs | lower bound | upper bound
   
  
positive.code: ~~~~~~~~~~~~
  
  .+convert(varchar, @datetime, CODE)+
  [options="header,footer",cols="1m,1m,1m,8,6"]
  |===
  
  2+| yyyy codes | yy code | format | name
  
negative.code: ~~~~~
  
  .Datatypes
  [options="header,autowidth"]
  |===
  | Family | name | since SQL# | bytes | lower bound | upper bound
  
  