----- NULL value -----
\N
\N
\N
\N
----- MergeTree engine -----
1	1	a	a	[1]	[1]	['a']	['a']	2000-01-01
1	1	a	a	[1]	[1]	['a']	[NULL]	2000-01-01
1	1	a	a	[1]	[NULL]	['a']	['a']	2000-01-01
1	1	a	\N	[1]	[1]	['a']	['a']	2000-01-01
1	\N	a	a	[1]	[1]	['a']	['a']	2000-01-01
----- Memory engine -----
1	1	a	a	[1]	[1]	['a']	['a']	2000-01-01
1	1	a	a	[1]	[1]	['a']	[NULL]	2000-01-01
1	1	a	a	[1]	[NULL]	['a']	['a']	2000-01-01
1	1	a	\N	[1]	[1]	['a']	['a']	2000-01-01
1	\N	a	a	[1]	[1]	['a']	['a']	2000-01-01
----- TinyLog engine -----
1	1	a	a	[1]	[1]	['a']	['a']	2000-01-01
1	1	a	a	[1]	[1]	['a']	[NULL]	2000-01-01
1	1	a	a	[1]	[NULL]	['a']	['a']	2000-01-01
1	1	a	\N	[1]	[1]	['a']	['a']	2000-01-01
1	\N	a	a	[1]	[1]	['a']	['a']	2000-01-01
----- Log engine -----
1	1	a	a	[1]	[1]	['a']	['a']	2000-01-01
1	1	a	a	[1]	[1]	['a']	[NULL]	2000-01-01
1	1	a	a	[1]	[NULL]	['a']	['a']	2000-01-01
1	1	a	\N	[1]	[1]	['a']	['a']	2000-01-01
1	\N	a	a	[1]	[1]	['a']	['a']	2000-01-01
----- StripeLog engine -----
1	1	a	a	[1]	[1]	['a']	['a']	2000-01-01
1	1	a	a	[1]	[1]	['a']	[NULL]	2000-01-01
1	1	a	a	[1]	[NULL]	['a']	['a']	2000-01-01
1	1	a	\N	[1]	[1]	['a']	['a']	2000-01-01
1	\N	a	a	[1]	[1]	['a']	['a']	2000-01-01
----- Insert with expression -----
[2]
----- Insert. Source and target columns have same types up to nullability. -----
2	7
4	3
5	1
6	9
8	2
----- Apply functions and aggregate functions on columns that may contain null values -----
2	7	9	14
5	1	6	35
9	\N	\N	63
42	42	84	294
\N	6	\N	\N
\N	\N	\N	\N
58
406
----- isNull, isNotNull -----
2	7	0	1
5	1	0	1
9	\N	0	0
42	42	0	1
\N	6	1	1
\N	\N	1	0
----- ifNull, nullIf -----
2	7	2
5	1	5
9	\N	9
42	42	42
\N	6	6
\N	\N	\N
2	7	2
5	1	5
9	\N	9
42	42	\N
\N	6	\N
\N	\N	\N
1
----- coalesce -----
\N
1
1
42
\N
2	7	2
5	1	5
9	\N	9
42	42	42
\N	6	6
\N	\N	\N
2	7	2
5	1	5
9	\N	9
42	42	42
\N	6	6
\N	\N	99
----- assumeNotNull -----
2
5
9
42
----- IS NULL, IS NOT NULL -----
2
5
9
42
\N
\N
----- if -----
a	1	UInt8
b	1	UInt8
c	0	UInt8
\N	0	UInt8
a	\N	Nullable(UInt8)
b	\N	Nullable(UInt8)
c	0	Nullable(UInt8)
\N	0	Nullable(UInt8)
----- case when -----
a	1	UInt8
b	1	UInt8
c	0	UInt8
\N	0	UInt8
a	\N	Nullable(UInt8)
b	\N	Nullable(UInt8)
c	0	Nullable(UInt8)
\N	0	Nullable(UInt8)
a	1	Nullable(UInt8)
b	1	Nullable(UInt8)
c	\N	Nullable(UInt8)
\N	\N	Nullable(UInt8)
----- multiIf -----
\N
2
\N
A
A\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0
3
2
2
42
\N
2
1
99
99
----- Array functions -----
[NULL]
[NULL,NULL,NULL]
[NULL,2,3]
[1,NULL,3]
[1,2,NULL]
[NULL,'b','c']
['a',NULL,'c']
['a','b',NULL]
----- arrayElement -----
----- constant arrays -----
1
\N
2
3
a
\N
c
d
1
\N
2
3
----- variable arrays -----
2
\N
2
2
\N
3
3
\N
3
\N
7
7
7
\N
\N
\N
4
\N
4
\N
a
\N
a
a
\N
bc
bc
\N
bc
\N
def
def
def
\N
\N
\N
ghij
\N
ghij
\N
2
3
7
4
\N
a
bc
def
ghij
\N
----- has -----
----- constant arrays -----
1
1
1
1
0
1
1
1
1
1
1
1
0
1
1
1
0
1
1
0
1
1
1
0
1
1
1
----- variable arrays -----
1
0
1
1
0
1
1
0
1
0
0
1
0
1
0
0
0
0
0
0
1
1
1
0
0
1
1
1
1
1
1
0
1
1
0
1
1
0
1
0
1
1
1
0
0
0
1
0
1
0
1
1
1
1
1
1
1
1
0
1
1
1
0
1
1
1
1
1
1
1
1
1
1
----- Aggregation -----
A	0	2
A	1	2
B	1	4
C	1	1
C	\N	3
\N	1	1
\N	\N	1
A	0	2
A	1	2
B	1	4
C	1	1
C	\N	3
A	4
B	4
C	4
\N	2
0	2
1	7
\N	3
0	2	1
0	3	1
1	2	2
1	3	2
1	5	3
\N	2	1
\N	3	2
0	2	1	1
0	3	\N	1
1	2	1	1
1	2	\N	1
1	3	1	1
1	3	\N	1
1	5	1	2
1	5	\N	1
\N	2	\N	1
\N	3	1	1
\N	3	\N	1
[0]	2
[1]	7
[NULL]	3