-- no modifiers
A	2
B	3
C	\N
D	1
1	D
2	A
3	B
\N	C
A	2
B	3
C	\N
D	1
1	D
2	A
3	B
\N	C
-- with ASC/DESC modifiers
A	2
B	3
C	\N
D	1
D	1
C	\N
B	3
A	2
A	2
B	3
C	\N
D	1
D	1
C	\N
B	3
A	2
-- with NULLS FIRST/LAST modifiers
\N	C
1	D
2	A
3	B
1	D
2	A
3	B
\N	C
\N	C
1	D
2	A
3	B
1	D
2	A
3	B
\N	C
-- SELECT *
A	2
B	3
C	\N
D	1
A	2
B	3
C	\N
D	1
-- the trouble starts when "order by all is all" is ambiguous
  -- columns
B	3	10
D	1	20
A	2	30
C	\N	40
B
D
A
C
B	3	10
D	1	20
A	2	30
C	\N	40
B	3	10
D	1	20
A	2	30
C	\N	40
B
D
A
C
B	3	10
D	1	20
A	2	30
C	\N	40
  -- column aliases
D	1
A	2
B	3
C	\N
D	1
A	2
B	3
C	\N
  -- expressions
A 2
B 3
D 1
\N
A 2
B 3
D 1
\N
  -- ORDER BY ALL loses its special meaning when used in conjunction with other columns
B	3	10
D	1	20
A	2	30
C	\N	40
B	3	10
D	1	20
A	2	30
C	\N	40