Revert "chore(deps): update SQL Server bridge to 0.3.0 and TDS to 0.4…

Cargo.toml

@@ -14,11 +14,11 @@ infer = "0.22"
 # SQL Server driver — Microsoft's mssql-tds protocol implementation behind a
 # tiberius-compatible API, pooled with deadpool. Keep the exact pin and update
 # alongside the directly used protocol crate when the bridge changes versions.
-mssql-tiberius-bridge = "=0.3.0"
+mssql-tiberius-bridge = "=0.2.0"
 # Direct dependency on the underlying protocol crate (lib name `mssql_tds`):
 # the result-set traits used through `Client::inner_mut()` are not re-exported
 # by the bridge. Pinned in lockstep with its compatible published protocol API.
-mssql-tds = "=0.4.0"
+mssql-tds = "=0.2.0"
 once_cell = "1"
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"

docs/dependencies.md

@@ -1,30 +1,30 @@
 # Dependency and supply-chain review
 
-Updated 2026-11-09 for the locked `mssql-tiberius-bridge` 0.3.0 release. The
+Updated 2026-10-10 for the locked `mssql-tiberius-bridge` 0.2.0 release. The
 bridge and protocol dependencies are exact-pinned because the plugin also uses
 the protocol API directly through `Client::inner_mut()`.
 
 ## TDS dependency provenance
 
 ### `mssql-tiberius-bridge`
 
-- **Resolved version:** [`0.3.0`](https://crates.io/crates/mssql-tiberius-bridge/0.3.0).
+- **Resolved version:** [`0.2.0`](https://crates.io/crates/mssql-tiberius-bridge/0.2.0),
+  released 2026-10-10. This is the latest published bridge version as of this
+  review.
 - **Upstream:** [`saurabh500/mssql-tiberius-bridge`](https://github.com/saurabh500/mssql-tiberius-bridge).
   The MIT-licensed crate provides a Tiberius-compatible API over Microsoft's
   `mssql-tds` protocol implementation.
-- **Upgrade impact:** 0.3.0 uses `mssql-tds` 0.4.0 and requires Rust 1.97.
-  Updating only the direct protocol dependency leaves two incompatible protocol
-  APIs in the dependency graph. Both pins must move together. The new
-  `EncodedValueTooLong` and `TvpCellSerialization` errors are reported as driver
-  failures, preserving encoded size limits and TVP parameter/row/column context.
-  The plugin's RPC ping still executes `SELECT 1`.
+- **Upgrade impact:** 0.2.0 uses `mssql-tds` 0.2.0 and requires Rust 1.97.
+  Its new `Error::BulkInput` is reported as a data conversion failure without
+  discarding the connection. `Client::ping()` now performs only a cached
+  dead-connection check; the plugin's RPC ping still executes `SELECT 1`.
   Pool recycling continues to use `Client::reset_session()` before reapplying
   the configured startup script.
 
 ### `mssql-tds`
 
-- **Resolved version:** [`0.4.0`](https://crates.io/crates/mssql-tds/0.4.0),
-  the protocol API required by bridge 0.3.0.
+- **Resolved version:** [`0.2.0`](https://crates.io/crates/mssql-tds/0.2.0),
+  the protocol API required by bridge 0.2.0.
 - **Upstream and licence:** Microsoft's
   [`microsoft/mssql-rs`](https://github.com/microsoft/mssql-rs), MIT.
 - The direct dependency exposes result-set metadata and row iteration not
@@ -36,7 +36,7 @@ the protocol API directly through `Client::inner_mut()`.
 The sections below retain findings from the 2026-08-30 review of preview.3 and
 preview.1. Their issue-status and license-inventory details were not
 re-audited as part of this dependency upgrade; do not treat them as current
-findings for bridge 0.3.0.
+findings for bridge 0.2.0.
 
 ## Open upstream issues relevant to this plugin
 

src/driver/error.rs

@@ -58,8 +58,6 @@ pub fn format_tds_error(error: &TdsError, ssl_mode: Option<&str>) -> String {
         | TdsError::ImplementationError(_)
         | TdsError::UnimplementedFeature { .. }
         | TdsError::TypeConversionError(_)
-        | TdsError::EncodedValueTooLong { .. }
-        | TdsError::TvpCellSerialization { .. }
         | TdsError::UnsupportedEncoding { .. }
         | TdsError::BulkCopyError(_)
         | TdsError::ColumnEncryptionError(_) => format!("SQL Server driver failure: {error}"),
@@ -272,34 +270,6 @@ mod tests {
         assert!(message.contains("ssl_mode 'require'"));
     }
 
-    #[test]
-    fn serialization_errors_preserve_size_and_cell_context() {
-        let error = BridgeError::Tds(TdsError::EncodedValueTooLong {
-            actual: 256,
-            maximum: 128,
-        });
-        let message = format_bridge_error(&error, None);
-        assert!(message.starts_with("SQL Server driver failure:"));
-        assert!(message.contains("256 bytes"));
-        assert!(message.contains("128 bytes"));
-        assert!(!bridge_error_requires_discard(&error));
-
-        let error = BridgeError::Tds(TdsError::TvpCellSerialization {
-            parameter: mssql_tds::error::TvpParameterRef::RpcPosition(2),
-            row: 3,
-            column: 4,
-            source: Box::new(TdsError::EncodedValueTooLong {
-                actual: 256,
-                maximum: 128,
-            }),
-        });
-        let message = format_bridge_error(&error, None);
-        assert!(message.starts_with("SQL Server driver failure:"));
-        assert!(message.contains("RPC position 2, row 3, column 4"));
-        assert!(message.contains("256 bytes"));
-        assert!(!bridge_error_requires_discard(&error));
-    }
-
     #[test]
     fn redaction_removes_password_and_connection_string() {
         let connection_string = "Server=db;User Id=sa;Password=NeverExposeThis!;Encrypt=true";