mirror of
https://github.com/pgvector/pgvector.git
synced 2026-06-06 14:01:31 +08:00
447 lines
8.0 KiB
Plaintext
447 lines
8.0 KiB
Plaintext
SELECT '[1,2,3]'::halfvec + '[4,5,6]';
|
|
?column?
|
|
----------
|
|
[5,7,9]
|
|
(1 row)
|
|
|
|
SELECT '[65519]'::halfvec + '[65519]';
|
|
ERROR: value out of range: overflow
|
|
SELECT '[1,2]'::halfvec + '[3]';
|
|
ERROR: different halfvec dimensions 2 and 1
|
|
SELECT '[1,2,3]'::halfvec - '[4,5,6]';
|
|
?column?
|
|
------------
|
|
[-3,-3,-3]
|
|
(1 row)
|
|
|
|
SELECT '[-65519]'::halfvec - '[65519]';
|
|
ERROR: value out of range: overflow
|
|
SELECT '[1,2]'::halfvec - '[3]';
|
|
ERROR: different halfvec dimensions 2 and 1
|
|
SELECT '[1,2,3]'::halfvec * '[4,5,6]';
|
|
?column?
|
|
-----------
|
|
[4,10,18]
|
|
(1 row)
|
|
|
|
SELECT '[65519]'::halfvec * '[65519]';
|
|
ERROR: value out of range: overflow
|
|
SELECT '[1e-7]'::halfvec * '[1e-7]';
|
|
ERROR: value out of range: underflow
|
|
SELECT '[1,2]'::halfvec * '[3]';
|
|
ERROR: different halfvec dimensions 2 and 1
|
|
SELECT '[1,2,3]'::halfvec || '[4,5]';
|
|
?column?
|
|
-------------
|
|
[1,2,3,4,5]
|
|
(1 row)
|
|
|
|
SELECT array_fill(0, ARRAY[16000])::halfvec || '[1]';
|
|
ERROR: halfvec cannot have more than 16000 dimensions
|
|
SELECT '[1,2,3]'::halfvec < '[1,2,3]';
|
|
?column?
|
|
----------
|
|
f
|
|
(1 row)
|
|
|
|
SELECT '[1,2,3]'::halfvec < '[1,2]';
|
|
?column?
|
|
----------
|
|
f
|
|
(1 row)
|
|
|
|
SELECT '[1,2,3]'::halfvec <= '[1,2,3]';
|
|
?column?
|
|
----------
|
|
t
|
|
(1 row)
|
|
|
|
SELECT '[1,2,3]'::halfvec <= '[1,2]';
|
|
?column?
|
|
----------
|
|
f
|
|
(1 row)
|
|
|
|
SELECT '[1,2,3]'::halfvec = '[1,2,3]';
|
|
?column?
|
|
----------
|
|
t
|
|
(1 row)
|
|
|
|
SELECT '[1,2,3]'::halfvec = '[1,2]';
|
|
?column?
|
|
----------
|
|
f
|
|
(1 row)
|
|
|
|
SELECT '[1,2,3]'::halfvec != '[1,2,3]';
|
|
?column?
|
|
----------
|
|
f
|
|
(1 row)
|
|
|
|
SELECT '[1,2,3]'::halfvec != '[1,2]';
|
|
?column?
|
|
----------
|
|
t
|
|
(1 row)
|
|
|
|
SELECT '[1,2,3]'::halfvec >= '[1,2,3]';
|
|
?column?
|
|
----------
|
|
t
|
|
(1 row)
|
|
|
|
SELECT '[1,2,3]'::halfvec >= '[1,2]';
|
|
?column?
|
|
----------
|
|
t
|
|
(1 row)
|
|
|
|
SELECT '[1,2,3]'::halfvec > '[1,2,3]';
|
|
?column?
|
|
----------
|
|
f
|
|
(1 row)
|
|
|
|
SELECT '[1,2,3]'::halfvec > '[1,2]';
|
|
?column?
|
|
----------
|
|
t
|
|
(1 row)
|
|
|
|
SELECT halfvec_cmp('[1,2,3]', '[1,2,3]');
|
|
halfvec_cmp
|
|
-------------
|
|
0
|
|
(1 row)
|
|
|
|
SELECT halfvec_cmp('[1,2,3]', '[0,0,0]');
|
|
halfvec_cmp
|
|
-------------
|
|
1
|
|
(1 row)
|
|
|
|
SELECT halfvec_cmp('[0,0,0]', '[1,2,3]');
|
|
halfvec_cmp
|
|
-------------
|
|
-1
|
|
(1 row)
|
|
|
|
SELECT halfvec_cmp('[1,2]', '[1,2,3]');
|
|
halfvec_cmp
|
|
-------------
|
|
-1
|
|
(1 row)
|
|
|
|
SELECT halfvec_cmp('[1,2,3]', '[1,2]');
|
|
halfvec_cmp
|
|
-------------
|
|
1
|
|
(1 row)
|
|
|
|
SELECT halfvec_cmp('[1,2]', '[2,3,4]');
|
|
halfvec_cmp
|
|
-------------
|
|
-1
|
|
(1 row)
|
|
|
|
SELECT halfvec_cmp('[2,3]', '[1,2,3]');
|
|
halfvec_cmp
|
|
-------------
|
|
1
|
|
(1 row)
|
|
|
|
SELECT vector_dims('[1,2,3]'::halfvec);
|
|
vector_dims
|
|
-------------
|
|
3
|
|
(1 row)
|
|
|
|
SELECT round(l2_norm('[1,1]'::halfvec)::numeric, 5);
|
|
round
|
|
---------
|
|
1.41421
|
|
(1 row)
|
|
|
|
SELECT l2_norm('[3,4]'::halfvec);
|
|
l2_norm
|
|
---------
|
|
5
|
|
(1 row)
|
|
|
|
SELECT l2_norm('[0,1]'::halfvec);
|
|
l2_norm
|
|
---------
|
|
1
|
|
(1 row)
|
|
|
|
SELECT l2_distance('[0,0]'::halfvec, '[3,4]');
|
|
l2_distance
|
|
-------------
|
|
5
|
|
(1 row)
|
|
|
|
SELECT l2_distance('[0,0]'::halfvec, '[0,1]');
|
|
l2_distance
|
|
-------------
|
|
1
|
|
(1 row)
|
|
|
|
SELECT l2_distance('[1,2]'::halfvec, '[3]');
|
|
ERROR: different halfvec dimensions 2 and 1
|
|
SELECT l2_distance('[1,1,1,1,1,1,1,1,1]'::halfvec, '[1,1,1,1,1,1,1,4,5]');
|
|
l2_distance
|
|
-------------
|
|
5
|
|
(1 row)
|
|
|
|
SELECT '[0,0]'::halfvec <-> '[3,4]';
|
|
?column?
|
|
----------
|
|
5
|
|
(1 row)
|
|
|
|
SELECT inner_product('[1,2]'::halfvec, '[3,4]');
|
|
inner_product
|
|
---------------
|
|
11
|
|
(1 row)
|
|
|
|
SELECT inner_product('[1,2]'::halfvec, '[3]');
|
|
ERROR: different halfvec dimensions 2 and 1
|
|
SELECT inner_product('[65504]'::halfvec, '[65504]');
|
|
inner_product
|
|
---------------
|
|
4290774016
|
|
(1 row)
|
|
|
|
SELECT inner_product('[1,1,1,1,1,1,1,1,1]'::halfvec, '[1,2,3,4,5,6,7,8,9]');
|
|
inner_product
|
|
---------------
|
|
45
|
|
(1 row)
|
|
|
|
SELECT '[1,2]'::halfvec <#> '[3,4]';
|
|
?column?
|
|
----------
|
|
-11
|
|
(1 row)
|
|
|
|
SELECT cosine_distance('[1,2]'::halfvec, '[2,4]');
|
|
cosine_distance
|
|
-----------------
|
|
0
|
|
(1 row)
|
|
|
|
SELECT cosine_distance('[1,2]'::halfvec, '[0,0]');
|
|
cosine_distance
|
|
-----------------
|
|
NaN
|
|
(1 row)
|
|
|
|
SELECT cosine_distance('[1,1]'::halfvec, '[1,1]');
|
|
cosine_distance
|
|
-----------------
|
|
0
|
|
(1 row)
|
|
|
|
SELECT cosine_distance('[1,0]'::halfvec, '[0,2]');
|
|
cosine_distance
|
|
-----------------
|
|
1
|
|
(1 row)
|
|
|
|
SELECT cosine_distance('[1,1]'::halfvec, '[-1,-1]');
|
|
cosine_distance
|
|
-----------------
|
|
2
|
|
(1 row)
|
|
|
|
SELECT cosine_distance('[1,2]'::halfvec, '[3]');
|
|
ERROR: different halfvec dimensions 2 and 1
|
|
SELECT cosine_distance('[1,1]'::halfvec, '[1.1,1.1]');
|
|
cosine_distance
|
|
-----------------
|
|
0
|
|
(1 row)
|
|
|
|
SELECT cosine_distance('[1,1]'::halfvec, '[-1.1,-1.1]');
|
|
cosine_distance
|
|
-----------------
|
|
2
|
|
(1 row)
|
|
|
|
SELECT cosine_distance('[1,2,3,4,5,6,7,8,9]'::halfvec, '[1,2,3,4,5,6,7,8,9]');
|
|
cosine_distance
|
|
-----------------
|
|
0
|
|
(1 row)
|
|
|
|
SELECT cosine_distance('[1,2,3,4,5,6,7,8,9]'::halfvec, '[-1,-2,-3,-4,-5,-6,-7,-8,-9]');
|
|
cosine_distance
|
|
-----------------
|
|
2
|
|
(1 row)
|
|
|
|
SELECT '[1,2]'::halfvec <=> '[2,4]';
|
|
?column?
|
|
----------
|
|
0
|
|
(1 row)
|
|
|
|
SELECT l1_distance('[0,0]'::halfvec, '[3,4]');
|
|
l1_distance
|
|
-------------
|
|
7
|
|
(1 row)
|
|
|
|
SELECT l1_distance('[0,0]'::halfvec, '[0,1]');
|
|
l1_distance
|
|
-------------
|
|
1
|
|
(1 row)
|
|
|
|
SELECT l1_distance('[1,2]'::halfvec, '[3]');
|
|
ERROR: different halfvec dimensions 2 and 1
|
|
SELECT l1_distance('[1,2,3,4,5,6,7,8,9]'::halfvec, '[1,2,3,4,5,6,7,8,9]');
|
|
l1_distance
|
|
-------------
|
|
0
|
|
(1 row)
|
|
|
|
SELECT l1_distance('[1,2,3,4,5,6,7,8,9]'::halfvec, '[0,3,2,5,4,7,6,9,8]');
|
|
l1_distance
|
|
-------------
|
|
9
|
|
(1 row)
|
|
|
|
SELECT '[0,0]'::halfvec <+> '[3,4]';
|
|
?column?
|
|
----------
|
|
7
|
|
(1 row)
|
|
|
|
SELECT l2_normalize('[3,4]'::halfvec);
|
|
l2_normalize
|
|
------------------------
|
|
[0.60009766,0.7998047]
|
|
(1 row)
|
|
|
|
SELECT l2_normalize('[3,0]'::halfvec);
|
|
l2_normalize
|
|
--------------
|
|
[1,0]
|
|
(1 row)
|
|
|
|
SELECT l2_normalize('[0,0.1]'::halfvec);
|
|
l2_normalize
|
|
--------------
|
|
[0,1]
|
|
(1 row)
|
|
|
|
SELECT l2_normalize('[0,0]'::halfvec);
|
|
l2_normalize
|
|
--------------
|
|
[0,0]
|
|
(1 row)
|
|
|
|
SELECT l2_normalize('[65504]'::halfvec);
|
|
l2_normalize
|
|
--------------
|
|
[1]
|
|
(1 row)
|
|
|
|
SELECT binary_quantize('[1,0,-1]'::halfvec);
|
|
binary_quantize
|
|
-----------------
|
|
100
|
|
(1 row)
|
|
|
|
SELECT binary_quantize('[0,0.1,-0.2,-0.3,0.4,0.5,0.6,-0.7,0.8,-0.9,1]'::halfvec);
|
|
binary_quantize
|
|
-----------------
|
|
01001110101
|
|
(1 row)
|
|
|
|
SELECT subvector('[1,2,3,4,5]'::halfvec, 1, 3);
|
|
subvector
|
|
-----------
|
|
[1,2,3]
|
|
(1 row)
|
|
|
|
SELECT subvector('[1,2,3,4,5]'::halfvec, 3, 2);
|
|
subvector
|
|
-----------
|
|
[3,4]
|
|
(1 row)
|
|
|
|
SELECT subvector('[1,2,3,4,5]'::halfvec, -1, 3);
|
|
subvector
|
|
-----------
|
|
[1]
|
|
(1 row)
|
|
|
|
SELECT subvector('[1,2,3,4,5]'::halfvec, 3, 9);
|
|
subvector
|
|
-----------
|
|
[3,4,5]
|
|
(1 row)
|
|
|
|
SELECT subvector('[1,2,3,4,5]'::halfvec, 1, 0);
|
|
ERROR: halfvec must have at least 1 dimension
|
|
SELECT subvector('[1,2,3,4,5]'::halfvec, 3, -1);
|
|
ERROR: halfvec must have at least 1 dimension
|
|
SELECT subvector('[1,2,3,4,5]'::halfvec, -1, 2);
|
|
ERROR: halfvec must have at least 1 dimension
|
|
SELECT avg(v) FROM unnest(ARRAY['[1,2,3]'::halfvec, '[3,5,7]']) v;
|
|
avg
|
|
-----------
|
|
[2,3.5,5]
|
|
(1 row)
|
|
|
|
SELECT avg(v) FROM unnest(ARRAY['[1,2,3]'::halfvec, '[3,5,7]', NULL]) v;
|
|
avg
|
|
-----------
|
|
[2,3.5,5]
|
|
(1 row)
|
|
|
|
SELECT avg(v) FROM unnest(ARRAY[]::halfvec[]) v;
|
|
avg
|
|
-----
|
|
|
|
(1 row)
|
|
|
|
SELECT avg(v) FROM unnest(ARRAY['[1,2]'::halfvec, '[3]']) v;
|
|
ERROR: expected 2 dimensions, not 1
|
|
SELECT avg(v) FROM unnest(ARRAY['[65504]'::halfvec, '[65504]']) v;
|
|
avg
|
|
---------
|
|
[65504]
|
|
(1 row)
|
|
|
|
SELECT halfvec_avg(array_agg(n)) FROM generate_series(1, 16002) n;
|
|
ERROR: halfvec cannot have more than 16000 dimensions
|
|
SELECT sum(v) FROM unnest(ARRAY['[1,2,3]'::halfvec, '[3,5,7]']) v;
|
|
sum
|
|
----------
|
|
[4,7,10]
|
|
(1 row)
|
|
|
|
SELECT sum(v) FROM unnest(ARRAY['[1,2,3]'::halfvec, '[3,5,7]', NULL]) v;
|
|
sum
|
|
----------
|
|
[4,7,10]
|
|
(1 row)
|
|
|
|
SELECT sum(v) FROM unnest(ARRAY[]::halfvec[]) v;
|
|
sum
|
|
-----
|
|
|
|
(1 row)
|
|
|
|
SELECT sum(v) FROM unnest(ARRAY['[1,2]'::halfvec, '[3]']) v;
|
|
ERROR: different halfvec dimensions 2 and 1
|
|
SELECT sum(v) FROM unnest(ARRAY['[65504]'::halfvec, '[65504]']) v;
|
|
ERROR: value out of range: overflow
|