mirror of
https://github.com/pgvector/pgvector.git
synced 2026-06-06 14:01:31 +08:00
491 lines
8.6 KiB
Plaintext
491 lines
8.6 KiB
Plaintext
SELECT '[1,2,3]'::vector + '[4,5,6]';
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?column?
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----------
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[5,7,9]
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(1 row)
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SELECT '[3e38]'::vector + '[3e38]';
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ERROR: value out of range: overflow
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SELECT '[1,2]'::vector + '[3]';
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ERROR: different vector dimensions 2 and 1
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SELECT '[1,2,3]'::vector - '[4,5,6]';
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?column?
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------------
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[-3,-3,-3]
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(1 row)
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SELECT '[-3e38]'::vector - '[3e38]';
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ERROR: value out of range: overflow
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SELECT '[1,2]'::vector - '[3]';
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ERROR: different vector dimensions 2 and 1
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SELECT '[1,2,3]'::vector * '[4,5,6]';
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?column?
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-----------
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[4,10,18]
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(1 row)
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SELECT '[1e37]'::vector * '[1e37]';
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ERROR: value out of range: overflow
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SELECT '[1e-37]'::vector * '[1e-37]';
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ERROR: value out of range: underflow
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SELECT '[1,2]'::vector * '[3]';
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ERROR: different vector dimensions 2 and 1
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SELECT '[1,2,3]'::vector || '[4,5]';
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?column?
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-------------
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[1,2,3,4,5]
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(1 row)
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SELECT array_fill(0, ARRAY[16000])::vector || '[1]';
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ERROR: vector cannot have more than 16000 dimensions
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SELECT '[1,2,3]'::vector < '[1,2,3]';
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?column?
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----------
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f
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(1 row)
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SELECT '[1,2,3]'::vector < '[1,2]';
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?column?
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----------
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f
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(1 row)
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SELECT '[1,2,3]'::vector <= '[1,2,3]';
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?column?
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----------
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t
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(1 row)
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SELECT '[1,2,3]'::vector <= '[1,2]';
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?column?
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----------
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f
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(1 row)
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SELECT '[1,2,3]'::vector = '[1,2,3]';
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?column?
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----------
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t
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(1 row)
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SELECT '[1,2,3]'::vector = '[1,2]';
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?column?
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----------
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f
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(1 row)
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SELECT '[1,2,3]'::vector != '[1,2,3]';
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?column?
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----------
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f
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(1 row)
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SELECT '[1,2,3]'::vector != '[1,2]';
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?column?
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----------
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t
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(1 row)
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SELECT '[1,2,3]'::vector >= '[1,2,3]';
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?column?
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----------
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t
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(1 row)
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SELECT '[1,2,3]'::vector >= '[1,2]';
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?column?
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----------
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t
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(1 row)
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SELECT '[1,2,3]'::vector > '[1,2,3]';
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?column?
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----------
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f
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(1 row)
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SELECT '[1,2,3]'::vector > '[1,2]';
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?column?
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----------
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t
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(1 row)
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SELECT vector_cmp('[1,2,3]', '[1,2,3]');
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vector_cmp
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------------
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0
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(1 row)
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SELECT vector_cmp('[1,2,3]', '[0,0,0]');
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vector_cmp
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------------
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1
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(1 row)
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SELECT vector_cmp('[0,0,0]', '[1,2,3]');
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vector_cmp
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------------
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-1
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(1 row)
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SELECT vector_cmp('[1,2]', '[1,2,3]');
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vector_cmp
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------------
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-1
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(1 row)
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SELECT vector_cmp('[1,2,3]', '[1,2]');
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vector_cmp
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------------
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1
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(1 row)
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SELECT vector_cmp('[1,2]', '[2,3,4]');
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vector_cmp
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------------
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-1
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(1 row)
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SELECT vector_cmp('[2,3]', '[1,2,3]');
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vector_cmp
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------------
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1
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(1 row)
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SELECT vector_dims('[1,2,3]'::vector);
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vector_dims
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-------------
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3
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(1 row)
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SELECT round(vector_norm('[1,1]')::numeric, 5);
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round
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---------
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1.41421
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(1 row)
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SELECT vector_norm('[3,4]');
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vector_norm
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-------------
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5
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(1 row)
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SELECT vector_norm('[0,1]');
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vector_norm
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-------------
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1
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(1 row)
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SELECT vector_norm('[3e37,4e37]')::real;
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vector_norm
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-------------
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5e+37
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(1 row)
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SELECT vector_norm('[0,0]');
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vector_norm
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-------------
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0
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(1 row)
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SELECT vector_norm('[2]');
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vector_norm
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-------------
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2
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(1 row)
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SELECT l2_distance('[0,0]'::vector, '[3,4]');
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l2_distance
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-------------
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5
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(1 row)
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SELECT l2_distance('[0,0]'::vector, '[0,1]');
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l2_distance
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-------------
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1
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(1 row)
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SELECT l2_distance('[1,2]'::vector, '[3]');
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ERROR: different vector dimensions 2 and 1
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SELECT l2_distance('[3e38]'::vector, '[-3e38]');
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l2_distance
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-------------
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Infinity
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(1 row)
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SELECT l2_distance('[1,1,1,1,1,1,1,1,1]'::vector, '[1,1,1,1,1,1,1,4,5]');
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l2_distance
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-------------
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5
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(1 row)
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SELECT '[0,0]'::vector <-> '[3,4]';
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?column?
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----------
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5
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(1 row)
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SELECT inner_product('[1,2]'::vector, '[3,4]');
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inner_product
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---------------
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11
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(1 row)
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SELECT inner_product('[1,2]'::vector, '[3]');
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ERROR: different vector dimensions 2 and 1
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SELECT inner_product('[3e38]'::vector, '[3e38]');
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inner_product
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---------------
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Infinity
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(1 row)
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SELECT inner_product('[1,1,1,1,1,1,1,1,1]'::vector, '[1,2,3,4,5,6,7,8,9]');
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inner_product
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---------------
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45
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(1 row)
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SELECT '[1,2]'::vector <#> '[3,4]';
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?column?
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----------
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-11
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(1 row)
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SELECT cosine_distance('[1,2]'::vector, '[2,4]');
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cosine_distance
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-----------------
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0
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(1 row)
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SELECT cosine_distance('[1,2]'::vector, '[0,0]');
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cosine_distance
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-----------------
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NaN
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(1 row)
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SELECT cosine_distance('[1,1]'::vector, '[1,1]');
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cosine_distance
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-----------------
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0
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(1 row)
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SELECT cosine_distance('[1,0]'::vector, '[0,2]');
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cosine_distance
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-----------------
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1
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(1 row)
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SELECT cosine_distance('[1,1]'::vector, '[-1,-1]');
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cosine_distance
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-----------------
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2
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(1 row)
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SELECT cosine_distance('[1,2]'::vector, '[3]');
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ERROR: different vector dimensions 2 and 1
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SELECT cosine_distance('[1,1]'::vector, '[1.1,1.1]');
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cosine_distance
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-----------------
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0
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(1 row)
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SELECT cosine_distance('[1,1]'::vector, '[-1.1,-1.1]');
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cosine_distance
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-----------------
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2
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(1 row)
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SELECT cosine_distance('[3e38]'::vector, '[3e38]');
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cosine_distance
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-----------------
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NaN
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(1 row)
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SELECT cosine_distance('[1,2,3,4,5,6,7,8,9]'::vector, '[1,2,3,4,5,6,7,8,9]');
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cosine_distance
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-----------------
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0
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(1 row)
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SELECT cosine_distance('[1,2,3,4,5,6,7,8,9]'::vector, '[-1,-2,-3,-4,-5,-6,-7,-8,-9]');
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cosine_distance
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-----------------
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2
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(1 row)
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SELECT '[1,2]'::vector <=> '[2,4]';
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?column?
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----------
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0
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(1 row)
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SELECT l1_distance('[0,0]'::vector, '[3,4]');
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l1_distance
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-------------
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7
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(1 row)
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SELECT l1_distance('[0,0]'::vector, '[0,1]');
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l1_distance
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-------------
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1
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(1 row)
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SELECT l1_distance('[1,2]'::vector, '[3]');
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ERROR: different vector dimensions 2 and 1
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SELECT l1_distance('[3e38]'::vector, '[-3e38]');
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l1_distance
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-------------
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Infinity
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(1 row)
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SELECT l1_distance('[1,2,3,4,5,6,7,8,9]'::vector, '[1,2,3,4,5,6,7,8,9]');
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l1_distance
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-------------
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0
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(1 row)
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SELECT l1_distance('[1,2,3,4,5,6,7,8,9]'::vector, '[0,3,2,5,4,7,6,9,8]');
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l1_distance
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-------------
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9
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(1 row)
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SELECT '[0,0]'::vector <+> '[3,4]';
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?column?
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----------
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7
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(1 row)
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SELECT l2_normalize('[3,4]'::vector);
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l2_normalize
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--------------
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[0.6,0.8]
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(1 row)
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SELECT l2_normalize('[3,0]'::vector);
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l2_normalize
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--------------
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[1,0]
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(1 row)
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SELECT l2_normalize('[0,0.1]'::vector);
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l2_normalize
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--------------
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[0,1]
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(1 row)
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SELECT l2_normalize('[0,0]'::vector);
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l2_normalize
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--------------
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[0,0]
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(1 row)
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SELECT l2_normalize('[3e38]'::vector);
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l2_normalize
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--------------
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[1]
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(1 row)
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SELECT binary_quantize('[1,0,-1]'::vector);
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binary_quantize
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-----------------
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100
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(1 row)
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SELECT binary_quantize('[0,0.1,-0.2,-0.3,0.4,0.5,0.6,-0.7,0.8,-0.9,1]'::vector);
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binary_quantize
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-----------------
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01001110101
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(1 row)
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SELECT subvector('[1,2,3,4,5]'::vector, 1, 3);
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subvector
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-----------
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[1,2,3]
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(1 row)
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SELECT subvector('[1,2,3,4,5]'::vector, 3, 2);
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subvector
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-----------
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[3,4]
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(1 row)
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SELECT subvector('[1,2,3,4,5]'::vector, -1, 3);
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subvector
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-----------
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[1]
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(1 row)
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SELECT subvector('[1,2,3,4,5]'::vector, 3, 9);
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subvector
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-----------
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[3,4,5]
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(1 row)
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SELECT subvector('[1,2,3,4,5]'::vector, 1, 0);
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ERROR: vector must have at least 1 dimension
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SELECT subvector('[1,2,3,4,5]'::vector, 3, -1);
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ERROR: vector must have at least 1 dimension
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SELECT subvector('[1,2,3,4,5]'::vector, -1, 2);
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ERROR: vector must have at least 1 dimension
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SELECT subvector('[1,2,3,4,5]'::vector, 2147483647, 10);
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ERROR: vector must have at least 1 dimension
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SELECT subvector('[1,2,3,4,5]'::vector, 3, 2147483647);
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subvector
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-----------
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[3,4,5]
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(1 row)
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SELECT avg(v) FROM unnest(ARRAY['[1,2,3]'::vector, '[3,5,7]']) v;
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avg
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-----------
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[2,3.5,5]
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(1 row)
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SELECT avg(v) FROM unnest(ARRAY['[1,2,3]'::vector, '[3,5,7]', NULL]) v;
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avg
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-----------
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[2,3.5,5]
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(1 row)
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SELECT avg(v) FROM unnest(ARRAY[]::vector[]) v;
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avg
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-----
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(1 row)
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SELECT avg(v) FROM unnest(ARRAY['[1,2]'::vector, '[3]']) v;
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ERROR: expected 2 dimensions, not 1
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SELECT avg(v) FROM unnest(ARRAY['[3e38]'::vector, '[3e38]']) v;
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avg
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---------
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[3e+38]
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(1 row)
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SELECT vector_avg(array_agg(n)) FROM generate_series(1, 16002) n;
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ERROR: vector cannot have more than 16000 dimensions
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SELECT sum(v) FROM unnest(ARRAY['[1,2,3]'::vector, '[3,5,7]']) v;
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sum
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----------
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[4,7,10]
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(1 row)
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SELECT sum(v) FROM unnest(ARRAY['[1,2,3]'::vector, '[3,5,7]', NULL]) v;
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sum
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----------
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[4,7,10]
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(1 row)
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SELECT sum(v) FROM unnest(ARRAY[]::vector[]) v;
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sum
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-----
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(1 row)
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SELECT sum(v) FROM unnest(ARRAY['[1,2]'::vector, '[3]']) v;
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ERROR: different vector dimensions 2 and 1
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SELECT sum(v) FROM unnest(ARRAY['[3e38]'::vector, '[3e38]']) v;
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ERROR: value out of range: overflow
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