Skip to content

Constraint

Constraint is an abstraction of table constraints that writers have to assert before writing.

Contract

Name

name: String

Used when:

Implementations

Sealed Trait

Constraint is a Scala sealed trait which means that all of the implementations are in the same compilation unit (a single file).

Check

A constraint with a SQL expression (Spark SQL) to check for when writing out data

NotNull

A constraint on a column to be not null

Name: NOT NULL


Last update: 2021-06-11
Back to top