Squashed 'vendor/ruvector/' content from commit b64c2172

git-subtree-dir: vendor/ruvector
git-subtree-split: b64c21726f2bb37286d9ee36a7869fef60cc6900

crates/ruvector-postgres/benches/sql/quick_benchmark.sql

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+-- Quick benchmark script for development testing
+-- Smaller dataset for faster iteration
+
+\timing on
+\set ECHO all
+
+-- Configuration
+\set num_vectors 10000
+\set num_queries 100
+\set dims 768
+\set k 10
+
+BEGIN;
+
+-- ============================================================================
+-- Setup
+-- ============================================================================
+
+DROP TABLE IF EXISTS test_vectors CASCADE;
+DROP TABLE IF EXISTS test_queries CASCADE;
+
+CREATE TABLE test_vectors (
+    id SERIAL PRIMARY KEY,
+    embedding ruvector(:dims)
+);
+
+CREATE TABLE test_queries (
+    id SERIAL PRIMARY KEY,
+    query_vector ruvector(:dims)
+);
+
+-- ============================================================================
+-- Load Data
+-- ============================================================================
+
+\echo 'Loading test data...'
+
+INSERT INTO test_vectors (embedding)
+SELECT
+    array_to_ruvector(ARRAY(
+        SELECT random()::real
+        FROM generate_series(1, :dims)
+    ))
+FROM generate_series(1, :num_vectors);
+
+INSERT INTO test_queries (query_vector)
+SELECT
+    array_to_ruvector(ARRAY(
+        SELECT random()::real
+        FROM generate_series(1, :dims)
+    ))
+FROM generate_series(1, :num_queries);
+
+COMMIT;
+
+-- ============================================================================
+-- Sequential Scan Baseline
+-- ============================================================================
+
+\echo ''
+\echo 'Sequential scan baseline:'
+EXPLAIN ANALYZE
+SELECT id
+FROM test_vectors
+ORDER BY embedding <-> (SELECT query_vector FROM test_queries WHERE id = 1)
+LIMIT :k;
+
+-- ============================================================================
+-- Build HNSW Index
+-- ============================================================================
+
+\echo ''
+\echo 'Building HNSW index...'
+CREATE INDEX test_vectors_hnsw_idx ON test_vectors
+USING hnsw (embedding ruvector_l2_ops)
+WITH (m = 16, ef_construction = 64);
+
+-- ============================================================================
+-- Index Search
+-- ============================================================================
+
+\echo ''
+\echo 'HNSW index search:'
+EXPLAIN ANALYZE
+SELECT id
+FROM test_vectors
+ORDER BY embedding <-> (SELECT query_vector FROM test_queries WHERE id = 1)
+LIMIT :k;
+
+-- ============================================================================
+-- Distance Functions
+-- ============================================================================
+
+\echo ''
+\echo 'Distance function performance (1000 calculations):'
+
+-- L2
+\timing on
+SELECT SUM(ruvector_l2_distance(v1.embedding, v2.embedding))
+FROM test_vectors v1, test_vectors v2
+WHERE v1.id <= 10 AND v2.id <= 100;
+
+-- Cosine
+\timing on
+SELECT SUM(ruvector_cosine_distance(v1.embedding, v2.embedding))
+FROM test_vectors v1, test_vectors v2
+WHERE v1.id <= 10 AND v2.id <= 100;
+
+-- Inner Product
+\timing on
+SELECT SUM(ruvector_inner_product(v1.embedding, v2.embedding))
+FROM test_vectors v1, test_vectors v2
+WHERE v1.id <= 10 AND v2.id <= 100;
+
+-- ============================================================================
+-- Cleanup
+-- ============================================================================
+
+DROP TABLE IF EXISTS test_vectors CASCADE;
+DROP TABLE IF EXISTS test_queries CASCADE;
+
+\echo ''
+\echo 'Quick benchmark complete!'