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93 lines
2.1 KiB
Plaintext
93 lines
2.1 KiB
Plaintext
SELECT l2_distance('{}/2'::sparsevec, '{0:3,1:4}/2');
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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('{}/2'::sparsevec, '{1:1}/2');
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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 '{}/2'::sparsevec <-> '{0:3,1:4}/2';
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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('{0:1,1:2}/2'::sparsevec, '{0:2,1:4}/2');
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inner_product
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---------------
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10
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(1 row)
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SELECT sparsevec_negative_inner_product('{0:1,1:2}/2', '{0:2,1:4}/2');
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sparsevec_negative_inner_product
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----------------------------------
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-10
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(1 row)
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SELECT cosine_distance('{0:1,1:2}/2'::sparsevec, '{0:2,1:4}/2');
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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('{0:1,1:2}/2'::sparsevec, '{}/2');
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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('{0:1,1:1}/2'::sparsevec, '{0:-1,1:-1}/2');
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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('{0:1}/2'::sparsevec, '{1:2}/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'::sparsevec, '{}/1');
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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('{0:1}/2'::sparsevec, '{0:1}/3');
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ERROR: different sparsevec dimensions 2 and 3
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SELECT subvector('{0:1,1:2,2:3,3:4,4:5}/5'::sparsevec, 1, 3);
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subvector
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-----------------
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{0:1,1:2,2:3}/3
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(1 row)
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SELECT subvector('{0:1,1:2,2:3,3:4,4:5}/5'::sparsevec, 3, 2);
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subvector
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-------------
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{2:3,3:4}/2
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(1 row)
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SELECT subvector('{0:1,1:2,2:3,3:4,4:5}/5'::sparsevec, -1, 3);
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subvector
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-----------
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{0:1}/1
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(1 row)
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SELECT subvector('{0:1,1:2,2:3,3:4,4:5}/5'::sparsevec, 3, 9);
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subvector
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-----------------
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{2:3,3:4,4:5}/3
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(1 row)
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SELECT subvector('{0:1,1:2,2:3,3:4,4:5}/5'::sparsevec, 1, 0);
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ERROR: sparsevec must have at least 1 dimension
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SELECT subvector('{0:1,1:2,2:3,3:4,4:5}/5'::sparsevec, 3, -1);
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ERROR: sparsevec must have at least 1 dimension
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SELECT subvector('{0:1,1:2,2:3,3:4,4:5}/5'::sparsevec, -1, 2);
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ERROR: sparsevec must have at least 1 dimension
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