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CHANGELOG.md

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4.18.1 (February 27, 2023)

  • Fix: Support pgx v4 and v5 stdlib in same program (Tomáš Procházka)

4.18.0 (February 11, 2023)

  • Upgrade pgconn to v1.14.0
  • Upgrade pgproto3 to v2.3.2
  • Upgrade pgtype to v1.14.0
  • Fix query sanitizer when query text contains Unicode replacement character
  • Fix context with value in BeforeConnect (David Harju)
  • Support pgx v4 and v5 stdlib in same program (Vitalii Solodilov)

4.17.2 (September 3, 2022)

  • Fix panic when logging batch error (Tom Möller)

4.17.1 (August 27, 2022)

  • Upgrade puddle to v1.3.0 - fixes context failing to cancel Acquire when acquire is creating resource which was introduced in v4.17.0 (James Hartig)
  • Fix atomic alignment on 32-bit platforms

4.17.0 (August 6, 2022)

  • Upgrade pgconn to v1.13.0
  • Upgrade pgproto3 to v2.3.1
  • Upgrade pgtype to v1.12.0
  • Allow background pool connections to continue even if cause is canceled (James Hartig)
  • Add LoggerFunc (Gabor Szabad)
  • pgxpool: health check should avoid going below minConns (James Hartig)
  • Add pgxpool.Conn.Hijack()
  • Logging improvements (Stepan Rabotkin)

4.16.1 (May 7, 2022)

  • Upgrade pgconn to v1.12.1
  • Fix explicitly prepared statements with describe statement cache mode

4.16.0 (April 21, 2022)

  • Upgrade pgconn to v1.12.0
  • Upgrade pgproto3 to v2.3.0
  • Upgrade pgtype to v1.11.0
  • Fix: Do not panic when context cancelled while getting statement from cache.
  • Fix: Less memory pinning from old Rows.
  • Fix: Support '\r' line ending when sanitizing SQL comment.
  • Add pluggable GSSAPI support (Oliver Tan)

4.15.0 (February 7, 2022)

  • Upgrade to pgconn v1.11.0
  • Upgrade to pgtype v1.10.0
  • Upgrade puddle to v1.2.1
  • Make BatchResults.Close safe to be called multiple times

4.14.1 (November 28, 2021)

  • Upgrade pgtype to v1.9.1 (fixes unintentional change to timestamp binary decoding)
  • Start pgxpool background health check after initial connections

4.14.0 (November 20, 2021)

  • Upgrade pgconn to v1.10.1
  • Upgrade pgproto3 to v2.2.0
  • Upgrade pgtype to v1.9.0
  • Upgrade puddle to v1.2.0
  • Add QueryFunc to BatchResults
  • Add context options to zerologadapter (Thomas Frössman)
  • Add zerologadapter.NewContextLogger (urso)
  • Eager initialize minpoolsize on connect (Daniel)
  • Unpin memory used by large queries immediately after use

4.13.0 (July 24, 2021)

  • Trimmed pseudo-dependencies in Go modules from other packages tests
  • Upgrade pgconn -- context cancellation no longer will return a net.Error
  • Support time durations for simple protocol (Michael Darr)

4.12.0 (July 10, 2021)

  • ResetSession hook is called before a connection is reused from pool for another query (Dmytro Haranzha)
  • stdlib: Add RandomizeHostOrderFunc (dkinder)
  • stdlib: add OptionBeforeConnect (dkinder)
  • stdlib: Do not reuse ConnConfig strings (Andrew Kimball)
  • stdlib: implement Conn.ResetSession (Jonathan Amsterdam)
  • Upgrade pgconn to v1.9.0
  • Upgrade pgtype to v1.8.0

4.11.0 (March 25, 2021)

  • Add BeforeConnect callback to pgxpool.Config (Robert Froehlich)
  • Add Ping method to pgxpool.Conn (davidsbond)
  • Added a kitlog level log adapter (Fabrice Aneche)
  • Make ScanArgError public to allow identification of offending column (Pau Sanchez)
  • Add *pgxpool.AcquireFunc
  • Add BeginFunc and BeginTxFunc
  • Add prefer_simple_protocol to connection string
  • Add logging on CopyFrom (Patrick Hemmer)
  • Add comment support when sanitizing SQL queries (Rusakow Andrew)
  • Do not panic on double close of pgxpool.Pool (Matt Schultz)
  • Avoid panic on SendBatch on closed Tx (Matt Schultz)
  • Update pgconn to v1.8.1
  • Update pgtype to v1.7.0

4.10.1 (December 19, 2020)

  • Fix panic on Query error with nil stmtcache.

4.10.0 (December 3, 2020)

  • Add CopyFromSlice to simplify CopyFrom usage (Egon Elbre)
  • Remove broken prepared statements from stmtcache (Ethan Pailes)
  • stdlib: consider any Ping error as fatal
  • Update puddle to v1.1.3 - this fixes an issue where concurrent Acquires can hang when a connection cannot be established
  • Update pgtype to v1.6.2

4.9.2 (November 3, 2020)

The underlying library updates fix an issue where appending to a scanned slice could corrupt other data.

  • Update pgconn to v1.7.2
  • Update pgproto3 to v2.0.6

4.9.1 (October 31, 2020)

  • Update pgconn to v1.7.1
  • Update pgtype to v1.6.1
  • Fix SendBatch of all prepared statements with statement cache disabled

4.9.0 (September 26, 2020)

  • pgxpool now waits for connection cleanup to finish before making room in pool for another connection. This prevents temporarily exceeding max pool size.
  • Fix when scanning a column to nil to skip it on the first row but scanning it to a real value on a subsequent row.
  • Fix prefer simple protocol with prepared statements. (Jinzhu)
  • Fix FieldDescriptions not being available on Rows before calling Next the first time.
  • Various minor fixes in updated versions of pgconn, pgtype, and puddle.

4.8.1 (July 29, 2020)

  • Update pgconn to v1.6.4
    • Fix deadlock on error after CommandComplete but before ReadyForQuery
    • Fix panic on parsing DSN with trailing '='

4.8.0 (July 22, 2020)

  • All argument types supported by native pgx should now also work through database/sql
  • Update pgconn to v1.6.3
  • Update pgtype to v1.4.2

4.7.2 (July 14, 2020)

  • Improve performance of Columns() (zikaeroh)
  • Fix fatal Commit() failure not being considered fatal
  • Update pgconn to v1.6.2
  • Update pgtype to v1.4.1

4.7.1 (June 29, 2020)

  • Fix stdlib decoding error with certain order and combination of fields

4.7.0 (June 27, 2020)

  • Update pgtype to v1.4.0
  • Update pgconn to v1.6.1
  • Update puddle to v1.1.1
  • Fix context propagation with Tx commit and Rollback (georgysavva)
  • Add lazy connect option to pgxpool (georgysavva)
  • Fix connection leak if pgxpool.BeginTx() fail (Jean-Baptiste Bronisz)
  • Add native Go slice support for strings and numbers to simple protocol
  • stdlib add default timeouts for Conn.Close() and Stmt.Close() (georgysavva)
  • Assorted performance improvements especially with large result sets
  • Fix close pool on not lazy connect failure (Yegor Myskin)
  • Add Config copy (georgysavva)
  • Support SendBatch with Simple Protocol (Jordan Lewis)
  • Better error logging on rows close (Igor V. Kozinov)
  • Expose stdlib.Conn.Conn() to enable database/sql.Conn.Raw()
  • Improve unknown type support for database/sql
  • Fix transaction commit failure closing connection

4.6.0 (March 30, 2020)

  • stdlib: Bail early if preloading rows.Next() results in rows.Err() (Bas van Beek)
  • Sanitize time to microsecond accuracy (Andrew Nicoll)
  • Update pgtype to v1.3.0
  • Update pgconn to v1.5.0
    • Update golang.org/x/crypto for security fix
    • Implement "verify-ca" SSL mode

4.5.0 (March 7, 2020)

  • Update to pgconn v1.4.0
    • Fixes QueryRow with empty SQL
    • Adds PostgreSQL service file support
  • Add Len() to *pgx.Batch (WGH)
  • Better logging for individual batch items (Ben Bader)

4.4.1 (February 14, 2020)

  • Update pgconn to v1.3.2 - better default read buffer size
  • Fix race in CopyFrom

4.4.0 (February 5, 2020)

  • Update puddle to v1.1.0 - fixes possible deadlock when acquire is cancelled
  • Update pgconn to v1.3.1 - fixes CopyFrom deadlock when multiple NoticeResponse received during copy
  • Update pgtype to v1.2.0
  • Add MaxConnIdleTime to pgxpool (Patrick Ellul)
  • Add MinConns to pgxpool (Patrick Ellul)
  • Fix: stdlib.ReleaseConn closes connections left in invalid state

4.3.0 (January 23, 2020)

  • Fix Rows.Values panic when unable to decode
  • Add Rows.Values support for unknown types
  • Add DriverContext support for stdlib (Alex Gaynor)
  • Update pgproto3 to v2.0.1 to never return an io.EOF as it would be misinterpreted by database/sql. Instead return io.UnexpectedEOF.

4.2.1 (January 13, 2020)

  • Update pgconn to v1.2.1 (fixes context cancellation data race introduced in v1.2.0))

4.2.0 (January 11, 2020)

  • Update pgconn to v1.2.0.
  • Update pgtype to v1.1.0.
  • Return error instead of panic when wrong number of arguments passed to Exec. (malstoun)
  • Fix large objects functionality when PreferSimpleProtocol = true.
  • Restore GetDefaultDriver which existed in v3. (Johan Brandhorst)
  • Add RegisterConnConfig to stdlib which replaces the removed RegisterDriverConfig from v3.

4.1.2 (October 22, 2019)

  • Fix dbSavepoint.Begin recursive self call
  • Upgrade pgtype to v1.0.2 - fix scan pointer to pointer

4.1.1 (October 21, 2019)

  • Fix pgxpool Rows.CommandTag() infinite loop / typo

4.1.0 (October 12, 2019)

Potentially Breaking Changes

Technically, two changes are breaking changes, but in practice these are extremely unlikely to break existing code.

  • Conn.Begin and Conn.BeginTx return a Tx interface instead of the internal dbTx struct. This is necessary for the Conn.Begin method to signature as other methods that begin a transaction.
  • Add Conn() to Tx interface. This is necessary to allow code using a Tx to access the *Conn (and pgconn.PgConn) on which the Tx is executing.

Fixes

  • Releasing a busy connection closes the connection instead of returning an unusable connection to the pool
  • Do not mutate config.Config.OnNotification in connect

4.0.1 (September 19, 2019)

  • Fix statement cache cleanup.
  • Corrected daterange OID.
  • Fix Tx when committing or rolling back multiple times in certain cases.
  • Improve documentation.

4.0.0 (September 14, 2019)

v4 is a major release with many significant changes some of which are breaking changes. The most significant are included below.

  • Simplified establishing a connection with a connection string.
  • All potentially blocking operations now require a context.Context. The non-context aware functions have been removed.
  • OIDs are hard-coded for known types. This saves the query on connection.
  • Context cancellations while network activity is in progress is now always fatal. Previously, it was sometimes recoverable. This led to increased complexity in pgx itself and in application code.
  • Go modules are required.
  • Errors are now implemented in the Go 1.13 style.
  • Rows and Tx are now interfaces.
  • The connection pool as been decoupled from pgx and is now a separate, included package (github.com/jackc/pgx/v4/pgxpool).
  • pgtype has been spun off to a separate package (github.com/jackc/pgtype).
  • pgproto3 has been spun off to a separate package (github.com/jackc/pgproto3/v2).
  • Logical replication support has been spun off to a separate package (github.com/jackc/pglogrepl).
  • Lower level PostgreSQL functionality is now implemented in a separate package (github.com/jackc/pgconn).
  • Tests are now configured with environment variables.
  • Conn has an automatic statement cache by default.
  • Batch interface has been simplified.
  • QueryArgs has been removed.