Copyright	(c) 2013-2021 Brendan Hay
License	Mozilla Public License, v. 2.0.
Maintainer	Brendan Hay <brendan.g.hay+amazonka@gmail.com>
Stability	auto-generated
Portability	non-portable (GHC extensions)
Safe Haskell	None

Amazonka.Glue.Types.SkewedInfo

Description

Synopsis

Documentation

data SkewedInfo Source #

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

See: newSkewedInfo smart constructor.

Constructors

SkewedInfo'
Fields 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. skewedColumnNames :: Maybe [Text] A list of names of columns that contain skewed values.

Instances

Instances details

Eq SkewedInfo Source #
Instance details Defined in Amazonka.Glue.Types.SkewedInfo Methods (==) :: SkewedInfo -> SkewedInfo -> Bool # (/=) :: SkewedInfo -> SkewedInfo -> Bool #
Read SkewedInfo Source #
Instance details Defined in Amazonka.Glue.Types.SkewedInfo Methods readsPrec :: Int -> ReadS SkewedInfo # readList :: ReadS [SkewedInfo] # readPrec :: ReadPrec SkewedInfo # readListPrec :: ReadPrec [SkewedInfo] #
Show SkewedInfo Source #
Instance details Defined in Amazonka.Glue.Types.SkewedInfo Methods showsPrec :: Int -> SkewedInfo -> ShowS # show :: SkewedInfo -> String # showList :: [SkewedInfo] -> ShowS #
Generic SkewedInfo Source #
Instance details Defined in Amazonka.Glue.Types.SkewedInfo Associated Types type Rep SkewedInfo :: Type -> Type # Methods from :: SkewedInfo -> Rep SkewedInfo x # to :: Rep SkewedInfo x -> SkewedInfo #
NFData SkewedInfo Source #
Instance details Defined in Amazonka.Glue.Types.SkewedInfo Methods rnf :: SkewedInfo -> () #
Hashable SkewedInfo Source #
Instance details Defined in Amazonka.Glue.Types.SkewedInfo Methods hashWithSalt :: Int -> SkewedInfo -> Int # hash :: SkewedInfo -> Int #
ToJSON SkewedInfo Source #
Instance details Defined in Amazonka.Glue.Types.SkewedInfo Methods toJSON :: SkewedInfo -> Value # toEncoding :: SkewedInfo -> Encoding # toJSONList :: [SkewedInfo] -> Value # toEncodingList :: [SkewedInfo] -> Encoding #
FromJSON SkewedInfo Source #
Instance details Defined in Amazonka.Glue.Types.SkewedInfo Methods parseJSON :: Value -> Parser SkewedInfo # parseJSONList :: Value -> Parser [SkewedInfo] #
type Rep SkewedInfo Source #
Instance details Defined in Amazonka.Glue.Types.SkewedInfo type Rep SkewedInfo = D1 ('MetaData "SkewedInfo" "Amazonka.Glue.Types.SkewedInfo" "libZSservicesZSamazonka-glueZSamazonka-glue" 'False) (C1 ('MetaCons "SkewedInfo'" 'PrefixI 'True) (S1 ('MetaSel ('Just "skewedColumnValueLocationMaps") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 (Maybe (HashMap Text Text))) :: (S1 ('MetaSel ('Just "skewedColumnValues") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 (Maybe [Text])) :: S1 ('MetaSel ('Just "skewedColumnNames") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 (Maybe [Text])))))

newSkewedInfo :: SkewedInfo Source #

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: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.

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

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

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

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

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

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

A list of names of columns that contain skewed values.