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What's new in go-mssqldb

This article lists significant changes in each release of the go-mssqldb driver. The microsoft/go-mssqldb repository is a fork of denisenkom/go-mssqldb. This article lists only releases published under the Microsoft fork, starting with v0.16.0. For a full changelog, see the GitHub releases page.

Note

Some version numbers aren't sequential. For example, versions v1.2.0 through v1.4.0 were never published. The version jumps reflect the actual release history of the Microsoft fork.

v1.10.0 (April 2026)

  • Added FailoverPartnerSPN connection string parameter for database mirroring failover.
  • Added NewConnectorWithProcessQueryText function for compatibility with the mssql driver name.
  • Added nullable civil types (NullDate, NullTime, NullDateTime) for date and time parameters.
  • Implemented the driver.DriverContext interface for database/sql compatibility.
  • Detected server-aborted transactions to prevent silent auto-commit when XACT_ABORT is enabled.
  • Surfaced server errors from Rows.Close() during token drain.
  • Handled COLINFO and TABNAME TDS tokens returned by tables with triggers.
  • Returned interface{} scan type for sql_variant columns instead of nil.
  • Made readCancelConfirmation respect context cancellation.
  • Exposed TrustServerCertificate in msdsn.Config and URL round-trip.
  • Sanitized credentials from connection string parsing errors.
  • Allowed named pipe protocol support for ARM64 Windows.

v1.9.8 (March 2026)

  • Updated dependencies to resolve govulncheck findings.

v1.9.7 (February 2026)

  • Added Extended Protection for Authentication (EPA) support.
  • Improved performance by using pointer receivers for columnStruct, reducing memory copies.
  • Fixed bulk copy column escaping.
  • Fixed stateSep handling in the batch package.

v1.9.6 (January 2026)

  • Added serverCertificate connection parameter for byte-comparison TLS certificate validation.
  • Updated golang.org/x/crypto dependency.

v1.9.4 (November 2025)

  • Fixed attention packet handling during transaction rollback.
  • Restricted named pipe and shared memory protocols to supported platforms.

v1.9.3 (September 2025)

  • Fixed bulk copy FMTONLY reset on failure.
  • Fixed TLS handshake packet flush during connection setup.
  • Added support for double-quoted values in ADO-style connection strings.

v1.8.2 (May 2025)

  • Recognized Pwd as a password field alias in connection strings.
  • Added COMMIT and ROLLBACK as recognized builtin commands.

v1.8.0 (December 2024)

  • Added user-defined type (UDT) support for hierarchyid, geometry, and geography.
  • Added tracing data to prelogin and login7 packets.
  • Fixed connection not closed when database name is incorrect.
  • Bumped azidentity to v1.6.0.

v1.7.2 (May 2024)

  • Fixed nullable type support for Always Encrypted in bulk copy.
  • Fixed Entra authentication scope handling.

v1.7.1 (April 2024)

  • Implemented Always Encrypted with the columnencryption connection parameter.
  • Added Azure Key Vault (akv) column encryption key provider.
  • Added ActiveDirectoryDeviceCode and ActiveDirectoryAzCli fedauth types.
  • Accepted additional values for the encrypt parameter in TDS 8.0 mode.
  • Added DER certificate support.
  • Added multisubnetfailover connection parameter.
  • Allowed Kerberos (krb5) configuration through environment variables.
  • Implemented change password during login.
  • Fixed LCID-to-code-page mappings.
  • Fixed string output parameter truncation.
  • Fixed UniqueIdentifier NULL value handling in Scan().
  • Fixed named pipe path handling.

v1.7.0 (February 2024)

  • Added NullUniqueIdentifier type with JSON and text marshaling support.

v1.6.0 (August 2023)

  • Added TDS 8.0 support with encrypt=strict.

v1.5.0 (August 2023)

  • Vendored the npipe package for named pipe connections.
  • Added DAC (Dedicated Administrator Connection) port browser support.
  • Added UniqueIdentifier MarshalText and UnmarshalJSON methods.
  • Enabled local DNS resolution with custom dialers.
  • Fixed mips and mipsel builds.

v1.1.0 (June 2023)

  • Added DAC port browser service.

v0.16.0 (August 2022) - First Microsoft fork release

  • Migrated to azidentity v1.0 for Microsoft Entra authentication.
  • Added tlsmin connection parameter to enforce a minimum TLS version.

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