Vector Similarity Search Extension

The vss extension is an experimental extension for DuckDB that adds indexing support to accelerate vector similarity search queries using DuckDB's new fixed-size ARRAY type. See the announcement blog post and the “What's New in the Vector Similarity Search Extension?” post. Usage To create a new HNSW (Hierarchical Navigable Small Worlds) index on a table with an ARRAY column, use the CREATE INDEX statement with the USING HNSW clause. For example: INSTALL vss; LOAD vss; CREATE TABLE my_vector_table (vec FLOAT[3]); INSERT INTO my_vector_table SELECT array_value(a, b, c) FROM range(1, 10) ra(a), range(1, 10) rb(b), range(1, 10) rc(c); CREATE INDEX my_hnsw_index…