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# name: test/sql/window/test_streaming_lead_lag.test
# description: Streaming window functions
# group: [window]
statement ok
PRAGMA enable_verification
statement ok
PRAGMA explain_output = PHYSICAL_ONLY;
query TT
EXPLAIN
SELECT i, LAG(i, 1) OVER() AS i1
FROM range(10) tbl(i);
----
physical_plan <REGEX>:.*STREAMING_WINDOW.*
query II
SELECT i, LAG(i, 1) OVER() AS i1
FROM range(10) tbl(i);
----
0 NULL
1 0
2 1
3 2
4 3
5 4
6 5
7 6
8 7
9 8
query TT
EXPLAIN
SELECT i, LAG(i, -1) OVER() AS i1
FROM range(10) tbl(i);
----
physical_plan <REGEX>:.*STREAMING_WINDOW.*
query TT
SELECT i, LAG(i, -1) OVER() AS i1
FROM range(10) tbl(i);
----
0 1
1 2
2 3
3 4
4 5
5 6
6 7
7 8
8 9
9 NULL
query TT
EXPLAIN
SELECT i, LEAD(i, -1) OVER() AS i1
FROM range(10) tbl(i);
----
physical_plan <REGEX>:.*STREAMING_WINDOW.*
query II
SELECT i, LEAD(i, -1) OVER() AS i1
FROM range(10) tbl(i);
----
0 NULL
1 0
2 1
3 2
4 3
5 4
6 5
7 6
8 7
9 8
query TT
EXPLAIN
SELECT i, LEAD(i, 1) OVER() AS i1
FROM range(10) tbl(i);
----
physical_plan <REGEX>:.*STREAMING_WINDOW.*
query TT
SELECT i, LEAD(i, 1) OVER() AS i1
FROM range(10) tbl(i);
----
0 1
1 2
2 3
3 4
4 5
5 6
6 7
7 8
8 9
9 NULL
# Test shift down
query TT
EXPLAIN
SELECT i, LAG(i, 1) OVER() AS i1
FROM range(3000) tbl(i)
WHERE i % 2 = 0
QUALIFY i1 <> i - 2
----
physical_plan <REGEX>:.*STREAMING_WINDOW.*
query TT
SELECT i, LAG(i, 1) OVER() AS i1
FROM range(3000) tbl(i)
WHERE i % 2 = 0
QUALIFY i1 <> i - 2
----
# Test constant default value
query TT
EXPLAIN
SELECT i, LAG(i, 1, 50) OVER() AS i1
FROM range(10) tbl(i);
----
physical_plan <REGEX>:.*STREAMING_WINDOW.*
query II
SELECT i, LAG(i, 1, 50) OVER() AS i1
FROM range(10) tbl(i);
----
0 50
1 0
2 1
3 2
4 3
5 4
6 5
7 6
8 7
9 8
query TT
EXPLAIN
SELECT i, LEAD(i, 1, 50) OVER() AS i1
FROM range(10) tbl(i);
----
physical_plan <REGEX>:.*STREAMING_WINDOW.*
query II
SELECT i, LEAD(i, 1, 50) OVER() AS i1
FROM range(10) tbl(i);
----
0 1
1 2
2 3
3 4
4 5
5 6
6 7
7 8
8 9
9 50
# Test sparse leads
query TT
EXPLAIN
SELECT i, LEAD(i, 2) OVER() AS i1
FROM range(3000) tbl(i)
WHERE i % 2048 = 0
----
physical_plan <REGEX>:.*STREAMING_WINDOW.*
query TT
SELECT i, LEAD(i, 2) OVER() AS i1
FROM range(3000) tbl(i)
WHERE i % 2048 = 0
----
0 NULL
2048 NULL
query TT
EXPLAIN
SELECT i, LEAD(i, 2) OVER() AS i1
FROM range(5000) tbl(i)
WHERE i % 2048 = 0
----
physical_plan <REGEX>:.*STREAMING_WINDOW.*
query TT
SELECT i, LEAD(i, 2) OVER() AS i1
FROM range(5000) tbl(i)
WHERE i % 2048 = 0
----
0 4096
2048 NULL
4096 NULL
# Test long deltas
query TT
EXPLAIN
SELECT i, LAG(i, 3000) OVER() AS i1
FROM range(5000) tbl(i);
----
physical_plan <!REGEX>:.*STREAMING_WINDOW.*
query TT
EXPLAIN
SELECT i, LEAD(i, 3000) OVER() AS i1
FROM range(5000) tbl(i);
----
physical_plan <!REGEX>:.*STREAMING_WINDOW.*
# Test multiple, unequal LEADs
query III
SELECT i, LEAD(i, 1) OVER(), LEAD(i, 2) OVER()
FROM range(10) tbl(i)
----
0 1 2
1 2 3
2 3 4
3 4 5
4 5 6
5 6 7
6 7 8
7 8 9
8 9 NULL
9 NULL NULL
# Test incomplete buffering
query II
select * from (
select
id,
lead(id, 2047, -1) over() l
from range(6144) tbl(id)
where id != 1
and id != 2
and id != 2500
and id != 2501
and id != 2502
)
where id >= 2040 and id <= 2050;
----
2040 4090
2041 4091
2042 4092
2043 4093
2044 4094
2045 4095
2046 4096
2047 4097
2048 4098
2049 4099
2050 4100
query I
SELECT LAG ( v3 , 10 , 3 ) OVER( )
FROM VALUES
( 0 , 1::VARCHAR , 1 ),
( 1 , NULL , 2 )
AS v0(v1, v3, v2);
----
3
3
|
