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62 lines
1.0 KiB
Plaintext
62 lines
1.0 KiB
Plaintext
SET enable_seqscan = off;
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-- vector
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CREATE TABLE t (val vector(3));
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INSERT INTO t (val) VALUES ('[0,0,0]'), ('[1,2,3]'), ('[1,1,1]'), (NULL);
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CREATE INDEX ON t (val);
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SELECT * FROM t WHERE val = '[1,2,3]';
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val
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---------
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[1,2,3]
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(1 row)
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SELECT * FROM t ORDER BY val;
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val
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---------
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[0,0,0]
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[1,1,1]
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[1,2,3]
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(4 rows)
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DROP TABLE t;
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-- halfvec
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CREATE TABLE t (val halfvec(3));
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INSERT INTO t (val) VALUES ('[0,0,0]'), ('[1,2,3]'), ('[1,1,1]'), (NULL);
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CREATE INDEX ON t (val);
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SELECT * FROM t WHERE val = '[1,2,3]';
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val
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---------
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[1,2,3]
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(1 row)
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SELECT * FROM t ORDER BY val;
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val
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---------
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[0,0,0]
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[1,1,1]
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[1,2,3]
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(4 rows)
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DROP TABLE t;
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-- sparsevec
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CREATE TABLE t (val sparsevec(3));
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INSERT INTO t (val) VALUES ('{}/3'), ('{1:1,2:2,3:3}/3'), ('{1:1,2:1,3:1}/3'), (NULL);
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CREATE INDEX ON t (val);
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SELECT * FROM t WHERE val = '{1:1,2:2,3:3}/3';
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val
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-----------------
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{1:1,2:2,3:3}/3
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(1 row)
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SELECT * FROM t ORDER BY val;
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val
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-----------------
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{}/3
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{1:1,2:1,3:1}/3
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{1:1,2:2,3:3}/3
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(4 rows)
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DROP TABLE t;
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