Error 4206: Cannot determine distance type for VEC_DISTANCE, index is not found
Error Code
SQLSTATE
Error
Description
4206
ER_VEC_DISTANCE_TYPE
Cannot determine distance type for VEC_DISTANCE, index is not found
Possible Causes and Solutions
Table is Built Without a Vector Index
CREATE OR REPLACE TABLE v (id INT PRIMARY KEY, v VECTOR(5) NOT NULL); INSERT INTO v VALUES (1, x'e360d63ebe554f3fcdbc523f4522193f5236083d'), (2, x'f511303f72224a3fdd05fe3eb22a133ffae86a3f'), (3,x'f09baa3ea172763f123def3e0c7fe53e288bf33e'), (4,x'b97a523f2a193e3eb4f62e3f2d23583e9dd60d3f'), (5,x'f7c5df3e984b2b3e65e59d3d7376db3eac63773e'), (6,x'de01453ffa486d3f10aa4d3fdd66813c71cb163f'), (7,x'76edfc3e4b57243f10f8423fb158713f020bda3e'), (8,x'56926c3fdf098d3e2c8c5e3d1ad4953daa9d0b3e'), (9,x'7b713f3e5258323f80d1113d673b2b3f66e3583f'), (10,x'6ca1d43e9df91b3fe580da3e1c247d3f147cf33e'); SELECT id FROM v ORDER BY VEC_DISTANCE(v, x'6ca1d43e9df91b3fe580da3e1c247d3f147cf33e'); ERROR 4206 (HY000): Cannot determine distance type for VEC_DISTANCE, index is not found
To solve, add a vector index to the table:
ALTER TABLE v ADD VECTOR INDEX(v); SELECT id FROM v ORDER BY VEC_DISTANCE(v, x'6ca1d43e9df91b3fe580da3e1c247d3f147cf33e'); +----+ | id | +----+ | 10 | | 7 | | 3 | | 9 | | 2 | | 1 | | 5 | | 4 | | 6 | | 8 | +----+
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