Hasql.Postgres

Documentation

data Postgres

Settings of a Postgres backend.

Constructors

Postgres

Fields

host :: ByteString

port :: Word16

user :: Text

password :: Text

database :: Text

Instances

Backend Postgres

Mapping Postgres Bool

Maps to "bool".

Mapping Postgres Char

Maps to "varchar".

Mapping Postgres Double

Maps to "float8".

Mapping Postgres Float

Maps to "float4".

Mapping Postgres Int

Maps to "int8".

Mapping Postgres Int8

Maps to "int2".

Mapping Postgres Int16

Maps to "int2".

Mapping Postgres Int32

Maps to "int4".

Mapping Postgres Int64

Maps to "int8".

Mapping Postgres Word

Maps to "int8".

Mapping Postgres Word8

Maps to "int2".

Mapping Postgres Word16

Maps to "int4".

Mapping Postgres Word32

Maps to "int8".

Mapping Postgres Word64

Maps to "int8".

Mapping Postgres ByteString

Maps to "bytea".

Mapping Postgres LocalTime

Maps to "timestamp".

Mapping Postgres ZonedTime

Maps to "timestamptz".

Mapping Postgres TimeOfDay

Maps to "time".

Mapping Postgres UTCTime

Maps to "timestamp".

Mapping Postgres Day

Maps to "date".

Mapping Postgres Text

Maps to "text".

Mapping Postgres Scientific

Maps to "numeric".

Mapping Postgres a => Mapping Postgres (Maybe a)

Maps to the same type as the underlying value, encoding the Nothing as NULL.

data StatementArgument Postgres = StatementArgument {

• unpackStatementArgument :: (Oid, Maybe (ByteString, Format))

}

data Result Postgres = Result {

• unpackResult :: Maybe ByteString

}

data Connection Postgres = Connection {

• connection :: !Connection
• preparer :: !StatementPreparer
• transactionState :: !(IORef (Maybe Word))

}