PGNP OLEDB Providers for PostgreSQL*, Greenplum and Redshift
The PGNP provider is a thin layer between Microsoft ADO and PostgreSQL database. It implements most of the OLEDB interfaces and uses libpq to access a PostgreSQL database. The provider can be used from 32-bit and 64-bit applications both native and .NET.Main features are:
- High performance in all OLTP and OLAP scenarios.
- Full support for SSRS, SSAS and SSIS in SQL Server 2005-2022.
- OS Platforms: Windows XP, Windows Servers 2003-2022, Windows Vista, Windows 7-11.
- SQL Server Linked Servers and Replication support.
- Error reporting and execution tracing.
- Transactions support: standard OLEDB, and "nested" PostgreSQL transaction using savepoints.
- Distributed transactions, two phase commit protocol.
- Schema support for tables, views, provider types, columns, primary/foreign keys, indexes, etc.
PGNP Project History
February 8, 2023 Ver 1.4.0.3684
Added TYPES schema.
Fixed bug in handling recursive CTE query when it joins to itself.
Fixed bug in handling CTEs with list of columns.
Fixed bug in processing complex expressions with aggregate functions.
Fixed bug in processing Numeric fields that resulted in the following linked server error: Invalid data for type "numeric".
Fixed side-effect from changes in release 3672 related to handling stored procedures.
PGNProfiler: added global lock for better resources isolation.
October 11, 2022 Ver 1.4.0.3672
Fixed bug in reporting errors to .Net: SqlState is now set correctly to HY000.
Fixed bug in processing command parameters with type BYTES.
Fixed bug in handling stored procedure call with name in double quote, e.g. call public."MixCase"().
Fixed parse error when SIMILAR TO clause is used.
Fixed parse error when VERSION=? is used in a statement (enabled VERSION keyword).
Fixed bug in processing queries with Set Aggregate Functions, e.g. select percentile_cont(0.5) within group (order by value) from percent_test group by name.
PGNP Features Matrix (32- and 64-bit Platforms); DE vs SE
| FEATURE | PGNP 1.3.0 | PGNP 1.4.0* | PGNP 1.5.0* |
| PostgreSQL Support | 8.x, 9.x | 9.x-15.x | 9.x-latest |
| OLE DB Connection Pooling | Yes | Yes | Yes |
| OLE DB Error Reporting | Yes | Yes | Yes |
| OLE DB Command Prepare and Cancel | Yes | Yes | Yes |
| OLE DB Columns Information | Yes | Yes | Yes |
| Database Transformation in SQL Server DTSWizard | Yes | Yes | Yes |
| Local Transaction Support | Yes | Yes | Yes |
| Distributed Transactions and Two Phase Commit Protocol (DTC enlistment) | No | Yes** | Yes** |
| SQL Server 2005-2019 Linked Servers Support | Yes | Yes | Yes |
| SQL Server 2005-2019 to PostgreSQL Replication Support | Yes | Yes | Yes |
What's New in 1.5?
The new major version of the PGNP OLEDB Provider for PostgreSQL, Greenplum and Redshift has several new features and improvements:
- IDP/SSO Login support for Redshift.
- 64-bit Profiler for unlimited tracing.
- Subscriptions support.
The PGNP v1.5 (beta) evaluation modules and documentation is provided to approved Beta Testers only. The v1.4 evaluation is available on the Download page.
See also: What's new in 1.4?