anchor.diff:      ;
   
   table_type_definition
  -    : TABLE '(' column_def_table_constraint (',' column_def_table_constraint)* ')'
  +    : TABLE '(' column_def_table_constraint (','? column_def_table_constraint)* ')'
       ;
   
   column_def_table_constraint
  
positive.code: BY:                              B Y;
  CASCADE:                         C A S C A D E;
  CASE:                            C A S E;
  CHECK:                           C H E C K;
  CHECKPOINT:                      C H E C K P O I N T;
  CLOSE:                           C L O S E;
  
negative.code: 
  // https://msdn.microsoft.com/en-us/library/ms187742.aspx
  column_definition
      : column_name (data_type | AS expression) (COLLATE id)? null_notnull?
        ((CONSTRAINT constraint=id)? DEFAULT constant_expression (WITH VALUES)?
         | IDENTITY ('(' seed=DECIMAL ',' increment=DECIMAL ')')? (NOT FOR REPLICATION)?)?
        ROWGUIDCOL?
  