What is the implementation logic of MATCH in sql

[Johnly1986]

SELECT rowid, distance FROM vec_examples
WHERE sample_embedding MATCH '[0.890, 0.544, 0.825, 0.961, 0.358, 0.0196, 0.521, 0.175]'
order by distance
limit 2;

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Hello, What does the SQL statement MATCH do in the above example. Where does distance come from, Does it calculate the Euclidean distance?

[AmgadHasan]

SELECT rowid, distance FROM vec_examples WHERE sample_embedding MATCH '[0.890, 0.544, 0.825, 0.961, 0.358, 0.0196, 0.521, 0.175]' order by distance limit 2;

Hello, What does the SQL statement MATCH do in the above example. Where does distance come from, Does it calculate the Euclidean distance?

I asked @asg017 over discord and here is the answer:

by default it's L2 distance, can be configured to something else with distance_metric:

create virtual table vec_items using vec0(
   contents_embedding float[768] distance_metric=cosine
)