Comparing Features of Different ODBC Drivers for SQL Server on Windows
When working with databases on Windows, particularly SQL Server, you may have encountered or used different ODBC (Open Database Connectivity) drivers for various purposes. These drivers can vary based on the provider and can impact the performance and functionality of the database connection. This article will focus on comparing the features of different ODBC drivers for SQL Server on a Windows 10 machine, highlighting the crucial differences and aspects you should consider when selecting an ODBC driver.
What is an ODBC driver and why do we need it?
An ODBC driver is a software component that allows applications to connect to and interact with databases using a standardized API (Application Programming Interface). It translates the database-specific SQL commands and data types into a format that can be understood by the application, hence enabling interoperability and simplified access.
Microsoft ODBC Driver 13, 17, and 18 for SQL Server: Comparing the features
Microsoft has released a number of ODBC drivers for SQL Server that are compatible with the Windows platform. In this section, we will discuss the features and differences between the latest drivers as of the time of this article's writing: ODBC Driver 13, 17, and 18 for SQL Server. These drivers are compatible with SQL Server 2008 and later.
Microsoft ODBC Driver 13 for SQL Server
ODBC Driver 13 for SQL Server was first released in 2016 and has been updated with security and performance enhancements throughout its lifetime. It supports TLS 1.2 and newer for secure connections and offers various connection pooling scenarios for optimal performance overhead. Bulk loading of data is supported via the SQLBindParameter interface, and it also comes with other features such as result set streaming, asynchronous processing, and Unicode support.
Microsoft ODBC Driver 17 for SQL Server
Microsoft ODBC Driver 17 for SQL Server was introduced in 2017 and supports all the features provided by ODBC Driver 13, in addition to several other enhancements and improvements. One of its key features is support for SQL Server 2019's new data types such as DATE, DATETIME2, and DATETIMEOFFSET. The driver also supports Always Encrypted technology, allowing secure data encryption without requiring applications to manage encryption keys. Moreover, it comes with support for additional authentication mechanisms, such as Azure Active Directory authentication and multi-factor authentication (MFA).
Microsoft ODBC Driver 18 for SQL Server
Microsoft ODBC Driver 18 for SQL Server, the latest driver at the time of writing, builds upon the features of the previous drivers and includes several new additions. Notably, it supports SQL Server 2022's new data types such as rowversion and time with fractional seconds. It also provides support for the new SQL\_LOGIN\_PASSWORD\_HASH connection string keyword, allowing applications to connect using a password hash instead of clear-text passwords. Additionally, it supports Azure Active Directory Passwordless authentication with public keys and provides several performance optimizations in query processing.
Uninstalling and Reinstalling ODBC Driver 18 for SQL Server
The question at the beginning of this article mentioned the uninstallation and reinstallation of ODBC Driver 18. To do so, follow these steps:
- Go to
Control Panel > Programs > Programs and Features. - Find and right-click on the
Microsoft ODBC Driver 18 for SQL Serverentry. - Select
Uninstalland confirm the action. - Download the latest version from the official Microsoft website.
- Run the downloaded installer and follow the instructions provided.
Summary and References
This article compared the various features and differences between the Microsoft ODBC Drivers 13, 17, and 18 for SQL Server on a Windows 10 machine. The drivers provide different levels of support for new SQL Server data types, authentication mechanisms, and performance optimizations. When working with these drivers, it's crucial to consider your specific applications' needs, such as SQL Server compatibility, secure data encryption, and performance optimization, among others.