Dialects — SQLAlchemy 2.0 Documentation (original) (raw)

Dialects¶

The dialect is the system SQLAlchemy uses to communicate with various types of DBAPI implementations and databases. The sections that follow contain reference documentation and notes specific to the usage of each backend, as well as notes for the various DBAPIs.

All dialects require that an appropriate DBAPI driver is installed.

Included Dialects¶

• PostgreSQL
• MySQL and MariaDB
• SQLite
• Oracle
• Microsoft SQL Server

Supported versions for Included Dialects¶

The following table summarizes the support level for each included dialect.

Supported database versions for included dialects¶

Support Definitions¶

Supported version¶

Supported version indicates that most SQLAlchemy features should work for the mentioned database version. Since not all database versions may be tested in the ci there may be some not working edge cases.

Best effort¶

Best effort indicates that SQLAlchemy tries to support basic features on these versions, but most likely there will be unsupported features or errors in some use cases. Pull requests with associated issues may be accepted to continue supporting older versions, which are reviewed on a case-by-case basis.

External Dialects¶

Currently maintained external dialect projects for SQLAlchemy include: