Release Notes

April 24, 2026 · View on GitHub

Stable Release 7.0.1 - 2026-04-23

This update brings the following changes since the 7.0.0 release:

Fixed SqlBulkCopy failing on SQL Server 2016 with Invalid column name 'graph_type' error. The column metadata query now uses dynamic SQL so that references to the graph_type column (introduced in SQL Server 2017) are not compiled on older versions that lack the column. (#3714, #4092, #4147)
Fixed SqlBulkCopy failing on Azure Synapse Analytics dedicated SQL pools. The column-list query previously used a variable-assignment pattern that Synapse does not support; it now uses STRING_AGG when targeting Synapse (engine edition 6) and falls back to the variable-assignment approach for SQL Server 2016 compatibility. (#4149, #4176, #4182)
Fixed SqlDataReader.GetFieldType() and GetProviderSpecificFieldType() returning typeof(byte[]) instead of typeof(SqlVector<float>) for vector float32 columns. The methods now follow the same type-determination logic as GetValue(). (#4104, #4105, #4152)
Added missing System.Data.Common (v4.3.0) NuGet package dependency for .NET Framework consumers. The inbox System.Data.Common assembly on .NET Framework predates APIs such as IDbColumnSchemaGenerator; without the explicit NuGet dependency, consumers encountered CS0012 compilation errors when using these types through Microsoft.Data.SqlClient. (#4063, #4074)

Enabled the User Agent TDS feature extension unconditionally. The Switch.Microsoft.Data.SqlClient.EnableUserAgent AppContext switch has been removed; the driver now always sends User Agent information during login. (#4124, #4154)
Added type forwards from the core Microsoft.Data.SqlClient assembly to public types that were moved to the Microsoft.Data.SqlClient.Extensions.Abstractions package: SqlAuthenticationMethod, SqlAuthenticationParameters, SqlAuthenticationProvider, SqlAuthenticationProviderException, and SqlAuthenticationToken. This ensures binary compatibility for assemblies compiled against earlier versions of Microsoft.Data.SqlClient where these types lived in the core assembly. (#4067, #4117)
Fixed API documentation include paths and duplicate doc snippets. (#4084, #4086, #4107, #4161)

We thank the following public contributors. Their efforts toward this project are very much appreciated.