Amazonka.Glue.Types.SkewedInfo

Documentation

data SkewedInfo

Specifies skewed values in a table. Skewed values are those that occur with very high frequency.

See: newSkewedInfo smart constructor.

Constructors

SkewedInfo'

Fields

• skewedColumnNames :: Maybe [Text]

  A list of names of columns that contain skewed values.

• skewedColumnValueLocationMaps :: Maybe (HashMap Text Text)

  A mapping of skewed values to the columns that contain them.

• skewedColumnValues :: Maybe [Text]

  A list of values that appear so frequently as to be considered skewed.

Instances

FromJSON SkewedInfo

Defined in Amazonka.Glue.Types.SkewedInfo

Methods

parseJSON :: Value -> Parser SkewedInfo

parseJSONList :: Value -> Parser [SkewedInfo]

ToJSON SkewedInfo

Defined in Amazonka.Glue.Types.SkewedInfo

Methods

toJSON :: SkewedInfo -> Value

toEncoding :: SkewedInfo -> Encoding

toJSONList :: [SkewedInfo] -> Value

toEncodingList :: [SkewedInfo] -> Encoding

Generic SkewedInfo

Defined in Amazonka.Glue.Types.SkewedInfo

Associated Types

type Rep SkewedInfo :: Type -> Type

Methods

from :: SkewedInfo -> Rep SkewedInfo x

to :: Rep SkewedInfo x -> SkewedInfo

Read SkewedInfo

Defined in Amazonka.Glue.Types.SkewedInfo

Methods

readsPrec :: Int -> ReadS SkewedInfo

readList :: ReadS [SkewedInfo]

readPrec :: ReadPrec SkewedInfo

readListPrec :: ReadPrec [SkewedInfo]

Show SkewedInfo

Defined in Amazonka.Glue.Types.SkewedInfo

Methods

showsPrec :: Int -> SkewedInfo -> ShowS

show :: SkewedInfo -> String

showList :: [SkewedInfo] -> ShowS

NFData SkewedInfo

Defined in Amazonka.Glue.Types.SkewedInfo

Methods

rnf :: SkewedInfo -> ()

Eq SkewedInfo

Defined in Amazonka.Glue.Types.SkewedInfo

Methods

(==) :: SkewedInfo -> SkewedInfo -> Bool

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

Hashable SkewedInfo

Defined in Amazonka.Glue.Types.SkewedInfo

Methods

hashWithSalt :: Int -> SkewedInfo -> Int

hash :: SkewedInfo -> Int

type Rep SkewedInfo

Defined in Amazonka.Glue.Types.SkewedInfo

type Rep SkewedInfo = D1 ('MetaData "SkewedInfo" "Amazonka.Glue.Types.SkewedInfo" "amazonka-glue-2.0-7miPWwBHdfn8N8SvbpLgE0" 'False) (C1 ('MetaCons "SkewedInfo'" 'PrefixI 'True) (S1 ('MetaSel ('Just "skewedColumnNames") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 (Maybe [Text])) :*: (S1 ('MetaSel ('Just "skewedColumnValueLocationMaps") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 (Maybe (HashMap Text Text))) :*: S1 ('MetaSel ('Just "skewedColumnValues") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 (Maybe [Text])))))

newSkewedInfo :: SkewedInfo

Create a value of SkewedInfo with all optional fields omitted.

Use generic-lens or optics to modify other optional fields.

The following record fields are available, with the corresponding lenses provided for backwards compatibility:

$sel:skewedColumnNames:SkewedInfo', skewedInfo_skewedColumnNames - A list of names of columns that contain skewed values.

$sel:skewedColumnValueLocationMaps:SkewedInfo', skewedInfo_skewedColumnValueLocationMaps - A mapping of skewed values to the columns that contain them.

$sel:skewedColumnValues:SkewedInfo', skewedInfo_skewedColumnValues - A list of values that appear so frequently as to be considered skewed.

skewedInfo_skewedColumnNames :: Lens' SkewedInfo (Maybe [Text])

A list of names of columns that contain skewed values.

skewedInfo_skewedColumnValueLocationMaps :: Lens' SkewedInfo (Maybe (HashMap Text Text))

A mapping of skewed values to the columns that contain them.

skewedInfo_skewedColumnValues :: Lens' SkewedInfo (Maybe [Text])

A list of values that appear so frequently as to be considered skewed.