This package provides type classes to allow backends to implement
SQL DDL support for beam. This allows you to use beam syntax to
write type-safe schema generation code.
The package also provides features to introspect beam schemas,
and support for automatic generation of migrations in SQL and
Haskell formats.
This is mostly a low-level support library. Most often, this
library is used to write tooling to support DDL manipulation in
your project, or to enable migrations support in beam backends.
For a more turnkey solution for database migrations, consider
the beam-migrate
command line tool. This provides out-of-the-box support for migrations,
schema change management, and version control, based on the features
provided in this library.
Changes
0.3.2.0
Added haskellSchema shortcut
0.3.1.0
Add Semigroup instances to prepare for GHC 8.4 and Stackage nightly
0.3.0.0
Re-introduce backend parameter as Database type class
Move beam migration log schema to beam-migrate, since many
applications will want to easily manage a database using the
haskell-based migrations
Add bringUpToDate and bringUpToDateWithHooks to
Database.Beam.Migrate.Simple, which can be used to bring a
database up to date with the given migration.
