Drifter.PostgreSQL

Documentation

data PGMigration

Instances

Drifter PGMigration

Methods

migrateSingle :: DBConnection PGMigration -> Change PGMigration -> IO (Either String ())

data Method PGMigration

data Method PGMigration

• = MigrationQuery Query
• | MigrationCode (Connection -> IO (Either String ()))

data DBConnection PGMigration

data DBConnection PGMigration = DBConnection PGMigrationConnection

data family Method a :: *

Instances

data Method PGMigration

data Method PGMigration

• = MigrationQuery Query
• | MigrationCode (Connection -> IO (Either String ()))

data family DBConnection a :: *

Instances

data DBConnection PGMigration

data DBConnection PGMigration = DBConnection PGMigrationConnection

data ChangeHistory

Constructors

ChangeHistory

Fields

• histId :: ChangeId
• histName :: ChangeName
• histDescription :: Maybe Description
• histTime :: UTCTime

Instances

Eq ChangeHistory

Methods

(==) :: ChangeHistory -> ChangeHistory -> Bool

(/=) :: ChangeHistory -> ChangeHistory -> Bool

Ord ChangeHistory

Methods

compare :: ChangeHistory -> ChangeHistory -> Ordering

(<) :: ChangeHistory -> ChangeHistory -> Bool

(<=) :: ChangeHistory -> ChangeHistory -> Bool

(>) :: ChangeHistory -> ChangeHistory -> Bool

(>=) :: ChangeHistory -> ChangeHistory -> Bool

max :: ChangeHistory -> ChangeHistory -> ChangeHistory

min :: ChangeHistory -> ChangeHistory -> ChangeHistory

Show ChangeHistory

Methods

showsPrec :: Int -> ChangeHistory -> ShowS

show :: ChangeHistory -> String

showList :: [ChangeHistory] -> ShowS

FromRow ChangeHistory

Methods

fromRow :: RowParser ChangeHistory

runMigrations :: Connection -> [Change PGMigration] -> IO (Either String ())

Takes the list of all migrations, removes the ones that have already run and runs them. Use this instead of migrate.

getChangeHistory :: Connection -> IO [ChangeHistory]

Get all changes from schema_migrations table for all the migrations that have previously run.

getChangeNameHistory :: Connection -> IO [ChangeName]

Get just the names of all changes from schema_migrations for migrations that have previously run.