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CHANGELOG.md

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0.7.0 (unreleased)

  • Added halfvec type
  • Added sparsevec type
  • Added support for bit vectors to 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.

  • 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.

  • 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 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