## 0.7.0 (2024-04-29) - Added `halfvec` type - Added `sparsevec` type - Added support for indexing `bit` type - Added support for indexing L1 distance with HNSW - Added `binary_quantize` function - Added `hamming_distance` function - Added `jaccard_distance` function - Added `l2_normalize` function - Added `subvector` function - Added concatenate operator for vectors - Added CPU dispatching for distance functions on Linux x86-64 - Updated comparison operators to support vectors with different dimensions ## 0.6.2 (2024-03-18) - Reduced lock contention with parallel HNSW index builds ## 0.6.1 (2024-03-04) - Fixed error with `ANALYZE` and vectors with different dimensions - Fixed segmentation fault with `shared_preload_libraries` - Fixed vector subtraction being marked as commutative ## 0.6.0 (2024-01-29) If upgrading with Postgres 12 or Docker, see [these notes](https://github.com/pgvector/pgvector#060). - Added support for parallel index builds for HNSW - Added validation for GUC parameters - Changed storage for vector from `extended` to `external` - Improved performance of HNSW - Reduced memory usage for HNSW index builds - Reduced WAL generation for HNSW index builds - Fixed error with logical replication - Fixed `invalid memory alloc request size` error with HNSW index builds - Moved Docker image to `pgvector` org - Added Docker tags for each supported version of Postgres - Dropped support for Postgres 11 ## 0.5.1 (2023-10-10) - Improved performance of HNSW index builds - Added check for MVCC-compliant snapshot for index scans ## 0.5.0 (2023-08-28) - Added HNSW index type - Added support for parallel index builds for IVFFlat - Added `l1_distance` function - Added element-wise multiplication for vectors - Added `sum` aggregate - Improved performance of distance functions - Fixed out of range results for cosine distance - Fixed results for NULL and NaN distances for IVFFlat ## 0.4.4 (2023-06-12) - Improved error message for malformed vector literal - Fixed segmentation fault with text input - Fixed consecutive delimiters with text input ## 0.4.3 (2023-06-10) - Improved cost estimation - Improved support for spaces with text input - Fixed infinite and NaN values with binary input - Fixed infinite values with vector addition and subtraction - Fixed infinite values with list centers - Fixed compilation error when `float8` is pass by reference - Fixed compilation error on PowerPC - Fixed segmentation fault with index creation on i386 ## 0.4.2 (2023-05-13) - Added notice when index created with little data - Fixed dimensions check for some direct function calls - Fixed installation error with Postgres 12.0-12.2 ## 0.4.1 (2023-03-21) - Improved performance of cosine distance - Fixed index scan count ## 0.4.0 (2023-01-11) If upgrading with Postgres < 13, see [this note](https://github.com/pgvector/pgvector/blob/v0.4.0/README.md#040). - Changed text representation for vector elements to match `real` - Changed storage for vector from `plain` to `extended` - Increased max dimensions for vector from 1024 to 16000 - Increased max dimensions for index from 1024 to 2000 - Improved accuracy of text parsing for certain inputs - Added `avg` aggregate for vector - Added experimental support for Windows - Dropped support for Postgres 10 ## 0.3.2 (2022-11-22) - Fixed `invalid memory alloc request size` error ## 0.3.1 (2022-11-02) If upgrading from 0.2.7 or 0.3.0, [recreate](https://github.com/pgvector/pgvector/blob/v0.3.1/README.md#031) all `ivfflat` indexes after upgrading to ensure all data is indexed. - Fixed issue with inserts silently corrupting `ivfflat` indexes (introduced in 0.2.7) - Fixed segmentation fault with index creation when lists > 6500 ## 0.3.0 (2022-10-15) - Added support for Postgres 15 - Dropped support for Postgres 9.6 ## 0.2.7 (2022-07-31) - Fixed `unexpected data beyond EOF` error ## 0.2.6 (2022-05-22) - Improved performance of index creation for Postgres < 12 ## 0.2.5 (2022-02-11) - Reduced memory usage during index creation - Fixed index creation exceeding `maintenance_work_mem` - Fixed error with index creation when lists > 1600 ## 0.2.4 (2022-02-06) - Added support for parallel vacuum - Fixed issue with index not reusing space ## 0.2.3 (2022-01-30) - Added indexing progress for Postgres 12+ - Improved interrupt handling during index creation ## 0.2.2 (2022-01-15) - Fixed compilation error on Mac ARM ## 0.2.1 (2022-01-02) - Fixed `operator is not unique` error ## 0.2.0 (2021-10-03) - Added support for Postgres 14 ## 0.1.8 (2021-09-07) - Added cast for `vector` to `real[]` ## 0.1.7 (2021-06-13) - Added cast for `numeric[]` to `vector` ## 0.1.6 (2021-06-09) - Fixed segmentation fault with `COUNT` ## 0.1.5 (2021-05-25) - Reduced memory usage during index creation ## 0.1.4 (2021-05-09) - Fixed kmeans for inner product - Fixed multiple definition error with GCC 10 ## 0.1.3 (2021-05-06) - Added Dockerfile - Fixed version ## 0.1.2 (2021-04-26) - Vectorized distance calculations - Improved cost estimation ## 0.1.1 (2021-04-25) - Added binary representation for `COPY` - Marked functions as `PARALLEL SAFE` ## 0.1.0 (2021-04-20) - First release