Molecule/molecule/molecule.boilerplate/molecule.boilerplate.api/KeywordsStable/countDistinct

countDistinct

molecule.boilerplate.api.KeywordsStable.countDistinct

trait countDistinct extends AggrCoalesce

Count of distinct attribute values.

Apply countDistinct keyword to attribute to return count of distinct attribute values of entities matching the molecule.

for {
 _ <- Person.firstName.lastName.age insert List(
   ("Ben", "Hayday", 42),
   ("Liz", "Taylor", 34),
   ("Liz", "Swifty", 34),
   ("Liz", "Mooray", 25)
 )
 _ <- Person.firstName.age(countDistinct).get.map(_ ==> List(
   ("Ben", 1),
   ("Liz", 2) // 34, 25
 ))
} yield ()

Attributes

Returns: Int
Source: Keywords.scala
Graph
Supertypes: trait AggrCoalesce

trait AggrKw

trait Kw

class Object

trait Matchable

class Any
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Known subtypes: object countDistinct.type

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