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feat(sql): Odbc provider — ANSI SQL:2008 profile over System.Data.Odbc (lmxopcua#753)

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SqlProvider.Odbc is now constructed; every enum member is a working backend.

- OdbcDialect: System.Data.Odbc 10.0.14 (no vulnerable packages), ANSI double-
  quote quoting, positional `?` markers, INFORMATION_SCHEMA catalog (system
  schemas of the common backends excluded by name — the live gate caught
  psqlODBC listing pg_catalog), FETCH FIRST n ROWS ONLY limits, a conservative
  1000-parameter chunk. Positional binding is safe because every caller adds
  parameters in marker order (planner IN list, catalog schema-then-table).
- Named queries on a positional provider are checked by `?` count against the
  declared params (literals/comments ignored), since there is no name to match.
- Supported backends are those whose SQL accepts that profile (PostgreSQL via
  psqlODBC proven, Snowflake-like); SQL Server/MySQL/DB2 should use their native
  provider. The host needs the ODBC driver manager + vendor driver.
- Reserved-provider controls in factory/probe/browser tests now use an
  undeclared ordinal (99); the AdminUI form offers Odbc and a test pins the
  dropdown theory to SqlDialects.Supported.
- Tests: OdbcDialectTests (unit, any host). OdbcReadTests + Docker/odbc/
  run-odbc-gate.sh run the built suite in a throwaway Linux SDK container with
  unixODBC + psqlODBC against a throwaway seeded PostgreSQL: KV IN-list
  positional binding, where-pair, topByTimestamp via FETCH FIRST, a two-
  parameter named query, and the browse walk. macOS has no vendor ODBC driver,
  so there the suite skips.

(lmxopcua#753)

Claude-Session: https://claude.ai/code/session_01GT67AEHd2Acv1YPwGfXEoV
This commit is contained in:
Joseph Doherty
2026-11-09 17:13:47 -05:00
parent 63372e757a
commit 3c9ab4b668
16 changed files with 606 additions and 39 deletions
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Directory.Packages.props
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@@ -118,6 +118,11 @@
(MySqlConnectorFactory.Instance, lmxopcua#753). MIT-licensed and truly async, unlike Oracle's
GPL MySql.Data, which is why the design names it. No native client install. -->
<PackageVersion Include="MySqlConnector" Version="2.6.2" />
<!-- Generic ODBC for the Sql poll driver's OdbcDialect (OdbcFactory.Instance, lmxopcua#753). The managed
package P/Invokes the platform's driver manager (odbc32 on Windows, unixODBC/iODBC elsewhere), so a
host running an Odbc driver instance also needs that and the vendor's ODBC driver installed — the one
provider that breaks the "managed only" rule, which is why it is opt-in per instance. -->
<PackageVersion Include="System.Data.Odbc" Version="10.0.14" />
<PackageVersion Include="Novell.Directory.Ldap.NETStandard" Version="3.6.0" />
<PackageVersion Include="OPCFoundation.NetStandard.Opc.Ua.Client" Version="1.5.378.106" />
<!-- Core carries Opc.Ua.StatusCodes, the oracle StatusCodeParityTests checks the drivers'