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PGNP OLEDB Providers for PostgreSQL*, Greenplum and Redshift


PostgreSQLThe 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.
* Wide range of Postgres-compatible databases are supported, i.e. Amazon RDB, Heroku, Yellowbrick, etc.

    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.

Read more: PGNP OLEDB Providers for PostgreSQL*, Greenplum and Redshift

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.

Read more: PGNP Project History

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

Read more: PGNP Features Matrix (32- and 64-bit Platforms); DE vs SE

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:
    1. IDP/SSO Login support for Redshift.
    2. 64-bit Profiler for unlimited tracing.
    3. 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?

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