Safe Haskell	Safe-Inferred
Language	Haskell2010

Database.DuckDB.Simple.FromField

Description

Synopsis

data Field = Field {
- fieldName :: Text
- fieldIndex :: Int
- fieldValue :: FieldValue
}
data FieldValue
- = FieldNull
- | FieldInt8 Int8
- | FieldInt16 Int16
- | FieldInt32 Int32
- | FieldInt64 Int64
- | FieldWord8 Word8
- | FieldWord16 Word16
- | FieldWord32 Word32
- | FieldWord64 Word64
- | FieldUUID UUID
- | FieldFloat Float
- | FieldDouble Double
- | FieldText Text
- | FieldBool Bool
- | FieldBlob ByteString
- | FieldDate Day
- | FieldTime TimeOfDay
- | FieldTimestamp LocalTime
- | FieldInterval IntervalValue
- | FieldHugeInt Integer
- | FieldUHugeInt Integer
- | FieldDecimal DecimalValue
- | FieldTimestampTZ UTCTime
- | FieldTimeTZ TimeWithZone
- | FieldBit BitString
- | FieldBigNum BigNum
- | FieldEnum Word32
- | FieldArray (Array Int FieldValue)
- | FieldList [FieldValue]
- | FieldMap [(FieldValue, FieldValue)]
- | FieldStruct (StructValue FieldValue)
- | FieldUnion (UnionValue FieldValue)
data StructField a = StructField {
- structFieldName :: !Text
- structFieldValue :: !a
}
data StructValue a = StructValue {
- structValueFields :: !(Array Int (StructField a))
- structValueTypes :: !(Array Int (StructField LogicalTypeRep))
- structValueIndex :: !(Map Text Int)
}
data UnionMemberType = UnionMemberType {
- unionMemberName :: !Text
- unionMemberType :: !LogicalTypeRep
}
data UnionValue a = UnionValue {
- unionValueIndex :: !Word16
- unionValueLabel :: !Text
- unionValuePayload :: !a
- unionValueMembers :: !(Array Int UnionMemberType)
}
data LogicalTypeRep
- = LogicalTypeScalar DuckDBType
- | LogicalTypeDecimal !Word8 !Word8
- | LogicalTypeList LogicalTypeRep
- | LogicalTypeArray LogicalTypeRep !Word64
- | LogicalTypeMap LogicalTypeRep LogicalTypeRep
- | LogicalTypeStruct !(Array Int (StructField LogicalTypeRep))
- | LogicalTypeUnion !(Array Int UnionMemberType)
- | LogicalTypeEnum !(Array Int Text)
data BitString = BitString {
- padding :: !Word8
- bits :: !ByteString
}
bsFromBool :: [Bool] -> BitString
newtype BigNum = BigNum Integer
fromBigNumBytes :: [Word8] -> Integer
toBigNumBytes :: Integer -> [Word8]
data DecimalValue = DecimalValue {
- decimalWidth :: !Word8
- decimalScale :: !Word8
- decimalInteger :: !Integer
}
data IntervalValue = IntervalValue {
- intervalMonths :: !Int32
- intervalDays :: !Int32
- intervalMicros :: !Int64
}
data TimeWithZone = TimeWithZone {
- timeWithZoneTime :: !TimeOfDay
- timeWithZoneZone :: !TimeZone
}
data ResultError
- = Incompatible {
  - errSQLType :: Text
  - errSQLField :: Text
  - errHaskellType :: Text
  - errMessage :: Text
  }
- | UnexpectedNull {
  - errSQLType :: Text
  - errSQLField :: Text
  - errHaskellType :: Text
  - errMessage :: Text
  }
- | ConversionFailed {
  - errSQLType :: Text
  - errSQLField :: Text
  - errHaskellType :: Text
  - errMessage :: Text
  }
type FieldParser a = Field -> Ok a
class FromField a where
- fromField :: FieldParser a
returnError :: forall b. Typeable b => (Text -> Text -> Text -> Text -> ResultError) -> Field -> Text -> Ok b

Documentation

data Field Source #

Metadata for a single column in a row.

Constructors

Field
Fields fieldName :: Text fieldIndex :: Int fieldValue :: FieldValue

Instances

Instances details

Show Field Source #
Instance details Defined in Database.DuckDB.Simple.FromField Methods showsPrec :: Int -> Field -> ShowS # show :: Field -> String # showList :: [Field] -> ShowS #
Eq Field Source #
Instance details Defined in Database.DuckDB.Simple.FromField Methods (==) :: Field -> Field -> Bool # (/=) :: Field -> Field -> Bool #

data FieldValue Source #

Internal representation of a column value.

Instances

Instances details

Show FieldValue Source #
Instance details Defined in Database.DuckDB.Simple.FromField Methods showsPrec :: Int -> FieldValue -> ShowS # show :: FieldValue -> String # showList :: [FieldValue] -> ShowS #
FromField FieldValue Source #
Instance details Defined in Database.DuckDB.Simple.FromField Methods fromField :: FieldParser FieldValue Source #
Eq FieldValue Source #
Instance details Defined in Database.DuckDB.Simple.FromField Methods (==) :: FieldValue -> FieldValue -> Bool # (/=) :: FieldValue -> FieldValue -> Bool #
FromField (StructValue FieldValue) Source #
Instance details Defined in Database.DuckDB.Simple.FromField Methods fromField :: FieldParser (StructValue FieldValue) Source #
FromField (UnionValue FieldValue) Source #
Instance details Defined in Database.DuckDB.Simple.FromField Methods fromField :: FieldParser (UnionValue FieldValue) Source #
DuckDBColumnType (StructValue FieldValue) Source #
Instance details Defined in Database.DuckDB.Simple.ToField Methods duckdbColumnTypeFor :: Proxy (StructValue FieldValue) -> Text Source #
DuckDBColumnType (UnionValue FieldValue) Source #
Instance details Defined in Database.DuckDB.Simple.ToField Methods duckdbColumnTypeFor :: Proxy (UnionValue FieldValue) -> Text Source #
ToField (StructValue FieldValue) Source #
Instance details Defined in Database.DuckDB.Simple.ToField Methods toField :: StructValue FieldValue -> FieldBinding Source #
ToField (UnionValue FieldValue) Source #
Instance details Defined in Database.DuckDB.Simple.ToField Methods toField :: UnionValue FieldValue -> FieldBinding Source #

data StructField a Source #

Constructors

StructField
Fields structFieldName :: !Text structFieldValue :: !a

Instances

Instances details

Show a => Show (StructField a) Source #
Instance details Defined in Database.DuckDB.Simple.LogicalRep Methods showsPrec :: Int -> StructField a -> ShowS # show :: StructField a -> String # showList :: [StructField a] -> ShowS #
Eq a => Eq (StructField a) Source #
Instance details Defined in Database.DuckDB.Simple.LogicalRep Methods (==) :: StructField a -> StructField a -> Bool # (/=) :: StructField a -> StructField a -> Bool #

data StructValue a Source #

Constructors

StructValue
Fields structValueFields :: !(Array Int (StructField a)) structValueTypes :: !(Array Int (StructField LogicalTypeRep)) structValueIndex :: !(Map Text Int)

Instances

Instances details

Show a => Show (StructValue a) Source #
Instance details Defined in Database.DuckDB.Simple.LogicalRep Methods showsPrec :: Int -> StructValue a -> ShowS # show :: StructValue a -> String # showList :: [StructValue a] -> ShowS #
FromField (StructValue FieldValue) Source #
Instance details Defined in Database.DuckDB.Simple.FromField Methods fromField :: FieldParser (StructValue FieldValue) Source #
DuckDBColumnType (StructValue FieldValue) Source #
Instance details Defined in Database.DuckDB.Simple.ToField Methods duckdbColumnTypeFor :: Proxy (StructValue FieldValue) -> Text Source #
ToField (StructValue FieldValue) Source #
Instance details Defined in Database.DuckDB.Simple.ToField Methods toField :: StructValue FieldValue -> FieldBinding Source #
Eq a => Eq (StructValue a) Source #
Instance details Defined in Database.DuckDB.Simple.LogicalRep Methods (==) :: StructValue a -> StructValue a -> Bool # (/=) :: StructValue a -> StructValue a -> Bool #

data UnionMemberType Source #

Constructors

UnionMemberType
Fields unionMemberName :: !Text unionMemberType :: !LogicalTypeRep

Instances

Instances details

Show UnionMemberType Source #
Instance details Defined in Database.DuckDB.Simple.LogicalRep Methods showsPrec :: Int -> UnionMemberType -> ShowS # show :: UnionMemberType -> String # showList :: [UnionMemberType] -> ShowS #
Eq UnionMemberType Source #
Instance details Defined in Database.DuckDB.Simple.LogicalRep Methods (==) :: UnionMemberType -> UnionMemberType -> Bool # (/=) :: UnionMemberType -> UnionMemberType -> Bool #

data UnionValue a Source #

Constructors

UnionValue
Fields unionValueIndex :: !Word16 unionValueLabel :: !Text unionValuePayload :: !a unionValueMembers :: !(Array Int UnionMemberType)

Instances

Instances details

Show a => Show (UnionValue a) Source #
Instance details Defined in Database.DuckDB.Simple.LogicalRep Methods showsPrec :: Int -> UnionValue a -> ShowS # show :: UnionValue a -> String # showList :: [UnionValue a] -> ShowS #
FromField (UnionValue FieldValue) Source #
Instance details Defined in Database.DuckDB.Simple.FromField Methods fromField :: FieldParser (UnionValue FieldValue) Source #
DuckDBColumnType (UnionValue FieldValue) Source #
Instance details Defined in Database.DuckDB.Simple.ToField Methods duckdbColumnTypeFor :: Proxy (UnionValue FieldValue) -> Text Source #
ToField (UnionValue FieldValue) Source #
Instance details Defined in Database.DuckDB.Simple.ToField Methods toField :: UnionValue FieldValue -> FieldBinding Source #
Eq a => Eq (UnionValue a) Source #
Instance details Defined in Database.DuckDB.Simple.LogicalRep Methods (==) :: UnionValue a -> UnionValue a -> Bool # (/=) :: UnionValue a -> UnionValue a -> Bool #

data LogicalTypeRep Source #

Instances

Instances details

Show LogicalTypeRep Source #
Instance details Defined in Database.DuckDB.Simple.LogicalRep Methods showsPrec :: Int -> LogicalTypeRep -> ShowS # show :: LogicalTypeRep -> String # showList :: [LogicalTypeRep] -> ShowS #
Eq LogicalTypeRep Source #
Instance details Defined in Database.DuckDB.Simple.LogicalRep Methods (==) :: LogicalTypeRep -> LogicalTypeRep -> Bool # (/=) :: LogicalTypeRep -> LogicalTypeRep -> Bool #

data BitString Source #

Constructors

BitString
Fields padding :: !Word8 bits :: !ByteString

Instances

Instances details

Show BitString Source #
Instance details Defined in Database.DuckDB.Simple.FromField Methods showsPrec :: Int -> BitString -> ShowS # show :: BitString -> String # showList :: [BitString] -> ShowS #
FromField BitString Source #
Instance details Defined in Database.DuckDB.Simple.FromField Methods fromField :: FieldParser BitString Source #
DuckDBColumnType BitString Source #
Instance details Defined in Database.DuckDB.Simple.ToField Methods duckdbColumnTypeFor :: Proxy BitString -> Text Source #
ToField BitString Source #
Instance details Defined in Database.DuckDB.Simple.ToField Methods toField :: BitString -> FieldBinding Source #
Eq BitString Source #
Instance details Defined in Database.DuckDB.Simple.FromField Methods (==) :: BitString -> BitString -> Bool # (/=) :: BitString -> BitString -> Bool #

bsFromBool :: [Bool] -> BitString Source #

Construct a BitString from a list of Bools, where the first element

newtype BigNum Source #

Constructors

BigNum Integer

Instances

Instances details

Num BigNum Source #
Instance details Defined in Database.DuckDB.Simple.FromField Methods (+) :: BigNum -> BigNum -> BigNum # (-) :: BigNum -> BigNum -> BigNum # (*) :: BigNum -> BigNum -> BigNum # negate :: BigNum -> BigNum # abs :: BigNum -> BigNum # signum :: BigNum -> BigNum # fromInteger :: Integer -> BigNum #
Show BigNum Source #
Instance details Defined in Database.DuckDB.Simple.FromField Methods showsPrec :: Int -> BigNum -> ShowS # show :: BigNum -> String # showList :: [BigNum] -> ShowS #
FromField BigNum Source #
Instance details Defined in Database.DuckDB.Simple.FromField Methods fromField :: FieldParser BigNum Source #
DuckDBColumnType BigNum Source #
Instance details Defined in Database.DuckDB.Simple.ToField Methods duckdbColumnTypeFor :: Proxy BigNum -> Text Source #
ToField BigNum Source #
Instance details Defined in Database.DuckDB.Simple.ToField Methods toField :: BigNum -> FieldBinding Source #
Eq BigNum Source #
Instance details Defined in Database.DuckDB.Simple.FromField Methods (==) :: BigNum -> BigNum -> Bool # (/=) :: BigNum -> BigNum -> Bool #

fromBigNumBytes :: [Word8] -> Integer Source #

Decode DuckDB’s BIGNUM blob (3-byte header + big-endian payload where negative magnitudes are bitwise complemented) back into a Haskell Integer. We undo the complement when needed, then chunk the remaining bytes into machine-word limbs (MSB chunk first) for integerFromWordList.

toBigNumBytes :: Integer -> [Word8] Source #

Encode an Integer into DuckDB’s BIGNUM blob layout: emit the 3-byte header (sign bit plus payload length) followed by the magnitude bytes in the same big-endian / complemented-on-negative form that DuckDB stores internally.

data DecimalValue Source #

Constructors

DecimalValue
Fields decimalWidth :: !Word8 decimalScale :: !Word8 decimalInteger :: !Integer

Instances

Instances details

Show DecimalValue Source #
Instance details Defined in Database.DuckDB.Simple.FromField Methods showsPrec :: Int -> DecimalValue -> ShowS # show :: DecimalValue -> String # showList :: [DecimalValue] -> ShowS #
FromField DecimalValue Source #
Instance details Defined in Database.DuckDB.Simple.FromField Methods fromField :: FieldParser DecimalValue Source #
Eq DecimalValue Source #
Instance details Defined in Database.DuckDB.Simple.FromField Methods (==) :: DecimalValue -> DecimalValue -> Bool # (/=) :: DecimalValue -> DecimalValue -> Bool #

data IntervalValue Source #

Constructors

IntervalValue
Fields intervalMonths :: !Int32 intervalDays :: !Int32 intervalMicros :: !Int64

Instances

Instances details

Show IntervalValue Source #
Instance details Defined in Database.DuckDB.Simple.FromField Methods showsPrec :: Int -> IntervalValue -> ShowS # show :: IntervalValue -> String # showList :: [IntervalValue] -> ShowS #
FromField IntervalValue Source #
Instance details Defined in Database.DuckDB.Simple.FromField Methods fromField :: FieldParser IntervalValue Source #
DuckValue IntervalValue Source #
Instance details Defined in Database.DuckDB.Simple.Generic Methods duckToField :: IntervalValue -> FieldValue Source # duckFromField :: FieldValue -> Either String IntervalValue Source # duckLogicalType :: Proxy IntervalValue -> LogicalTypeRep Source #
Eq IntervalValue Source #
Instance details Defined in Database.DuckDB.Simple.FromField Methods (==) :: IntervalValue -> IntervalValue -> Bool # (/=) :: IntervalValue -> IntervalValue -> Bool #

data TimeWithZone Source #

Constructors

TimeWithZone
Fields timeWithZoneTime :: !TimeOfDay timeWithZoneZone :: !TimeZone

Instances

Instances details

Show TimeWithZone Source #
Instance details Defined in Database.DuckDB.Simple.FromField Methods showsPrec :: Int -> TimeWithZone -> ShowS # show :: TimeWithZone -> String # showList :: [TimeWithZone] -> ShowS #
FromField TimeWithZone Source #
Instance details Defined in Database.DuckDB.Simple.FromField Methods fromField :: FieldParser TimeWithZone Source #
DuckValue TimeWithZone Source #
Instance details Defined in Database.DuckDB.Simple.Generic Methods duckToField :: TimeWithZone -> FieldValue Source # duckFromField :: FieldValue -> Either String TimeWithZone Source # duckLogicalType :: Proxy TimeWithZone -> LogicalTypeRep Source #
Eq TimeWithZone Source #
Instance details Defined in Database.DuckDB.Simple.FromField Methods (==) :: TimeWithZone -> TimeWithZone -> Bool # (/=) :: TimeWithZone -> TimeWithZone -> Bool #

data ResultError Source #

Exception thrown if conversion from a SQL value to a Haskell value fails.

Constructors

Incompatible	The SQL and Haskell types are not compatible.
Fields errSQLType :: Text errSQLField :: Text errHaskellType :: Text errMessage :: Text
UnexpectedNull	A SQL `NULL` was encountered when the Haskell type did not permit it.
Fields errSQLType :: Text errSQLField :: Text errHaskellType :: Text errMessage :: Text
ConversionFailed	The SQL value could not be parsed, or could not be represented as a valid Haskell value, or an unexpected low-level error occurred (e.g. mismatch between metadata and actual data in a row).
Fields errSQLType :: Text errSQLField :: Text errHaskellType :: Text errMessage :: Text

Instances

Instances details

Exception ResultError Source #
Instance details Defined in Database.DuckDB.Simple.FromField Methods toException :: ResultError -> SomeException # fromException :: SomeException -> Maybe ResultError # displayException :: ResultError -> String #
Show ResultError Source #
Instance details Defined in Database.DuckDB.Simple.FromField Methods showsPrec :: Int -> ResultError -> ShowS # show :: ResultError -> String # showList :: [ResultError] -> ShowS #
Eq ResultError Source #
Instance details Defined in Database.DuckDB.Simple.FromField Methods (==) :: ResultError -> ResultError -> Bool # (/=) :: ResultError -> ResultError -> Bool #

type FieldParser a = Field -> Ok a Source #

Parser used by FromField instances and utilities such as fieldWith. The supplied Field contains column metadata and an already-decoded FieldValue; callers should return Ok on success or Errors (typically wrapping a ResultError) when the conversion fails.

class FromField a where Source #

Types that can be constructed from a DuckDB column.

Methods

fromField :: FieldParser a Source #

Instances

Instances details

FromField Int16 Source #
Instance details Defined in Database.DuckDB.Simple.FromField Methods fromField :: FieldParser Int16 Source #
FromField Int32 Source #
Instance details Defined in Database.DuckDB.Simple.FromField Methods fromField :: FieldParser Int32 Source #
FromField Int64 Source #
Instance details Defined in Database.DuckDB.Simple.FromField Methods fromField :: FieldParser Int64 Source #
FromField Int8 Source #
Instance details Defined in Database.DuckDB.Simple.FromField Methods fromField :: FieldParser Int8 Source #
FromField Word16 Source #
Instance details Defined in Database.DuckDB.Simple.FromField Methods fromField :: FieldParser Word16 Source #
FromField Word32 Source #
Instance details Defined in Database.DuckDB.Simple.FromField Methods fromField :: FieldParser Word32 Source #
FromField Word64 Source #
Instance details Defined in Database.DuckDB.Simple.FromField Methods fromField :: FieldParser Word64 Source #
FromField Word8 Source #
Instance details Defined in Database.DuckDB.Simple.FromField Methods fromField :: FieldParser Word8 Source #
FromField ByteString Source #
Instance details Defined in Database.DuckDB.Simple.FromField Methods fromField :: FieldParser ByteString Source #
FromField BigNum Source #
Instance details Defined in Database.DuckDB.Simple.FromField Methods fromField :: FieldParser BigNum Source #
FromField BitString Source #
Instance details Defined in Database.DuckDB.Simple.FromField Methods fromField :: FieldParser BitString Source #
FromField DecimalValue Source #
Instance details Defined in Database.DuckDB.Simple.FromField Methods fromField :: FieldParser DecimalValue Source #
FromField FieldValue Source #
Instance details Defined in Database.DuckDB.Simple.FromField Methods fromField :: FieldParser FieldValue Source #
FromField IntervalValue Source #
Instance details Defined in Database.DuckDB.Simple.FromField Methods fromField :: FieldParser IntervalValue Source #
FromField TimeWithZone Source #
Instance details Defined in Database.DuckDB.Simple.FromField Methods fromField :: FieldParser TimeWithZone Source #
FromField Null Source #
Instance details Defined in Database.DuckDB.Simple.FromField Methods fromField :: FieldParser Null Source #
FromField Text Source #
Instance details Defined in Database.DuckDB.Simple.FromField Methods fromField :: FieldParser Text Source #
FromField Day Source #
Instance details Defined in Database.DuckDB.Simple.FromField Methods fromField :: FieldParser Day Source #
FromField UTCTime Source #
Instance details Defined in Database.DuckDB.Simple.FromField Methods fromField :: FieldParser UTCTime Source #
FromField LocalTime Source #
Instance details Defined in Database.DuckDB.Simple.FromField Methods fromField :: FieldParser LocalTime Source #
FromField TimeOfDay Source #
Instance details Defined in Database.DuckDB.Simple.FromField Methods fromField :: FieldParser TimeOfDay Source #
FromField UUID Source #
Instance details Defined in Database.DuckDB.Simple.FromField Methods fromField :: FieldParser UUID Source #
FromField String Source #
Instance details Defined in Database.DuckDB.Simple.FromField Methods fromField :: FieldParser String Source #
FromField Integer Source #
Instance details Defined in Database.DuckDB.Simple.FromField Methods fromField :: FieldParser Integer Source #
FromField Natural Source #
Instance details Defined in Database.DuckDB.Simple.FromField Methods fromField :: FieldParser Natural Source #
FromField Bool Source #
Instance details Defined in Database.DuckDB.Simple.FromField Methods fromField :: FieldParser Bool Source #
FromField Double Source #
Instance details Defined in Database.DuckDB.Simple.FromField Methods fromField :: FieldParser Double Source #
FromField Float Source #
Instance details Defined in Database.DuckDB.Simple.FromField Methods fromField :: FieldParser Float Source #
FromField Int Source #
Instance details Defined in Database.DuckDB.Simple.FromField Methods fromField :: FieldParser Int Source #
FromField Word Source #
Instance details Defined in Database.DuckDB.Simple.FromField Methods fromField :: FieldParser Word Source #
(Generic a, GFromField (Rep a), Typeable a) => FromField (ViaDuckDB a) Source #	Deriving-via `FromField` instance. Errors are rewrapped using the existing `returnError` helper so callers receive a proper `ResultError`.
Instance details Defined in Database.DuckDB.Simple.Generic Methods fromField :: FieldParser (ViaDuckDB a) Source #
FromField (StructValue FieldValue) Source #
Instance details Defined in Database.DuckDB.Simple.FromField Methods fromField :: FieldParser (StructValue FieldValue) Source #
FromField (UnionValue FieldValue) Source #
Instance details Defined in Database.DuckDB.Simple.FromField Methods fromField :: FieldParser (UnionValue FieldValue) Source #
FromField a => FromField (Maybe a) Source #
Instance details Defined in Database.DuckDB.Simple.FromField Methods fromField :: FieldParser (Maybe a) Source #
(Typeable a, FromField a) => FromField [a] Source #
Instance details Defined in Database.DuckDB.Simple.FromField Methods fromField :: FieldParser [a] Source #
(Typeable a, FromField a) => FromField (Array Int a) Source #
Instance details Defined in Database.DuckDB.Simple.FromField Methods fromField :: FieldParser (Array Int a) Source #
(Ord k, Typeable k, Typeable v, FromField k, FromField v) => FromField (Map k v) Source #
Instance details Defined in Database.DuckDB.Simple.FromField Methods fromField :: FieldParser (Map k v) Source #

returnError :: forall b. Typeable b => (Text -> Text -> Text -> Text -> ResultError) -> Field -> Text -> Ok b Source #

Helper to construct a ResultError with field context. based on postgresql-simple's implementation

FieldNull
FieldInt8 Int8
FieldInt16 Int16
FieldInt32 Int32
FieldInt64 Int64
FieldWord8 Word8
FieldWord16 Word16
FieldWord32 Word32
FieldWord64 Word64
FieldUUID UUID
FieldFloat Float
FieldDouble Double
FieldText Text
FieldBool Bool
FieldBlob ByteString
FieldDate Day
FieldTime TimeOfDay
FieldTimestamp LocalTime
FieldInterval IntervalValue
FieldHugeInt Integer
FieldUHugeInt Integer
FieldDecimal DecimalValue
FieldTimestampTZ UTCTime
FieldTimeTZ TimeWithZone
FieldBit BitString
FieldBigNum BigNum
FieldEnum Word32
FieldArray (Array Int FieldValue)
FieldList [FieldValue]
FieldMap [(FieldValue, FieldValue)]
FieldStruct (StructValue FieldValue)
FieldUnion (UnionValue FieldValue)

LogicalTypeScalar DuckDBType
LogicalTypeDecimal !Word8 !Word8
LogicalTypeList LogicalTypeRep
LogicalTypeArray LogicalTypeRep !Word64
LogicalTypeMap LogicalTypeRep LogicalTypeRep
LogicalTypeStruct !(Array Int (StructField LogicalTypeRep))
LogicalTypeUnion !(Array Int UnionMemberType)
LogicalTypeEnum !(Array Int Text)