Update dependency Microsoft.Data.SqlClient to 7.0.2

[dependencyupdates]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
Microsoft.Data.SqlClient (source)	7.0.1 → 7.0.2

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Release Notes

dotnet/sqlclient (Microsoft.Data.SqlClient)

v7.0.2

This update brings the following changes since the 7.1.0-preview1 release.
See the full release notes for detailed descriptions.

Important — package version alignment: Starting with the 7.0.2 release, the Microsoft.Data.SqlClient driver and its companion packages share a single aligned version. Preview 2 of the 7.1 line continues this alignment; the following packages now ship together as 7.1.0-preview2:

• Microsoft.Data.SqlClient
• Microsoft.Data.SqlClient.AlwaysEncrypted.AzureKeyVaultProvider
• Microsoft.Data.SqlClient.Extensions.Azure
• Microsoft.Data.SqlClient.Extensions.Abstractions
• Microsoft.Data.SqlClient.Internal.Logging

(Microsoft.SqlServer.Server continues to version independently and remains at 1.0.0.)

Applications that reference Microsoft.Data.SqlClient.Extensions.Azure must upgrade it to 7.1.0-preview2 when upgrading Microsoft.Data.SqlClient to 7.1.0-preview2.

Compatibility guarantee: All aligned assemblies ship with FileVersion 7.1.0.x and AssemblyVersion 7.0.0.0. The AssemblyVersion is unchanged from 7.0.2, so upgrading from 7.0.2 to 7.1.0-preview2 does not require any new .NET Framework strong-name binding redirects. See the 7.0.2 release notes for the original AssemblyVersion alignment (the one-time breaking change that raised AssemblyVersion from 1.0.0.0 to 7.0.0.0 for Extensions.Azure, Extensions.Abstractions, and Internal.Logging; AzureKeyVaultProvider was already on 7.x).

Added

• Added SqlConnection.GetSchemaAsync overloads mirroring the existing synchronous shapes.
  (#​3005)

• Added SQL Graph column-alias support ($node_id, $edge_id, $from_id, $to_id) as destination columns in SqlBulkCopy.
  (#​3677)

• SqlBatchCommand.CommandBehavior (a driver-specific property that existed since batching was introduced but was previously ignored) is now honored during SqlBatch execution, and SqlBatch.ExecuteReader now respects the CommandBehavior value passed to it.
  (#​4125)

• Added a Connection Idle Timeout connection-string keyword and matching SqlConnectionStringBuilder.IdleTimeout property to evict idle pooled connections (default 300 seconds; 0 disables). Enforcement is opt-in via Switch.Microsoft.Data.SqlClient.UseLegacyIdleTimeoutBehavior=false; the default preserves the historical pooling behavior. When enabled, idle-timeout enforcement applies to the existing connection pool as well.
  (#​4295)

Changed

• The Connect Timeout budget can now be propagated through pool acquisition via a shared TimeoutTimer, so time spent waiting in the pool is deducted from the overall timeout. Enforcement is opt-in via Switch.Microsoft.Data.SqlClient.UseOverallConnectTimeoutForPoolWait=true; the default (false) preserves the historical behavior where pool waits do not count against Connect Timeout. Adds a dependency on Microsoft.Bcl.TimeProvider.
  (#​4270)

• Hardened SqlConnection internal state transitions with Interlocked.CompareExchange guards.
  (#​4267)

• Removed legacy connection-options inheritance from internal APIs and simplified TryOpenConnection / TryReplaceConnection / pool interfaces.
  (#​4235,
  #​4237,
  #​4261,
  #​4415)

• Added the SQL Server 2025 json data type to the DataTypes schema table returned by SqlConnection.GetSchema.
  (#​3858)

• Added async generic helpers to reduce sync/async duplication.
  (#​4334)

• Use hardcoded LCID mappings when decoding strings.
  (#​4212)

• Reduced allocations by skipping lock acquisition on SqlErrorCollection counters when no errors exist, and by avoiding stack-trace materialization on expected null-return paths.
  (#​4099,
  #​4102,
  #​4157)

• Improved accuracy of EnclaveDiffieHellmanInfo.Size.
  (#​4346)

• SqlVector<float> now serializes and deserializes multibyte values as little-endian explicitly.
  (#​3861)

• Updated the bundled .NET 10 SDK to 10.0.300.
  (#​4287)

• Re-shipped Microsoft.Data.SqlClient.Extensions.Azure as 7.1.0-preview2, adding Windows Account Manager (WAM) broker support for Entra ID authentication on Windows. See release notes.

• Re-shipped Microsoft.Data.SqlClient.AlwaysEncrypted.AzureKeyVaultProvider, Microsoft.Data.SqlClient.Extensions.Abstractions, and Microsoft.Data.SqlClient.Internal.Logging as 7.1.0-preview2 (version alignment only, no functional changes). See release notes for AKV, Abstractions, and Logging.

Fixed

• Fixed a NullReferenceException in SqlCommand.Cancel() when the active connection has already been torn down.
  (#​4372)

• Fixed Always Encrypted column master key signature verification incorrectly reusing cached results after a prior verification failure.
  (#​4339)

• Fixed missing bounds checks on TDS token and feature-extension-acknowledgment data lengths that could allow a spoofing server to trigger unbounded allocations.
  (#​4340)

• Fixed SqlBulkCopy failing in least-privilege environments.
  (#​4306)

• Fixed Always Encrypted reads of CekMdVersion and EkValueCount to align with the TDS specification.
  (#​4240)

• Fixed LoginWithFailover to validate parser state before continuing.
  (#​4140)

• Fixed the SPN used during login to use the resolved port instead of the instance name when Protocol=None or Protocol=Admin.
  (#​4180)

• Fixed a race in SqlConnection.TryOpenInner that could surface as InvalidCastException; the same race now returns a deterministic InvalidOperationException.
  (#​4179)

• Fixed several CancellationTokenSource leaks across SqlDataReader, SqlConnection reconnect, SqlCommand reconnect timeout, and sequential-stream helpers.
  (#​4009)

• Fixed server certificate documentation.
  (#​4408)

Removed

• Breaking: Removed SQL Server 7.0 and SQL Server 2000 support, along with the TypeSystem.SQLServer2000 enum value and the Type System Version=SQL Server 2000 connection-string value. Connection strings that specify this value now throw ArgumentException when the connection is opened. Supported values are Latest, SQL Server 2005, SQL Server 2008, and SQL Server 2012.
  (#​4015)

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