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trait Constraint extends AnyRef

A constraint that restricts states of data in a table.

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@Evolving()
Since

4.1.0

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Abstract Value Members

  1. abstract def enforced(): Boolean

    Indicates whether this constraint is actively enforced.

    Indicates whether this constraint is actively enforced. If enforced, data modifications that violate the constraint fail with a constraint violation error.

  2. abstract def name(): String

    Returns the name of this constraint.

  3. abstract def rely(): Boolean

    Indicates whether this constraint is assumed to hold true if the validity is unknown.

    Indicates whether this constraint is assumed to hold true if the validity is unknown. Unlike the validation status, this flag is usually provided by the user as a hint to the system.

  4. abstract def toDDL(): String

    Returns the definition of this constraint in the DDL format.

  5. abstract def toDescription(): String

    Returns the constraint description for DESCRIBE TABLE output, excluding the constraint name (shown separately).

  6. abstract def validationStatus(): ValidationStatus

    Indicates whether the existing data in the table satisfies this constraint.

    Indicates whether the existing data in the table satisfies this constraint. The constraint can be valid (the data is guaranteed to satisfy the constraint), invalid (some records violate the constraint), or unvalidated (the validity is unknown). The validation status is usually managed by the system and can't be modified by the user.

Concrete Value Members

  1. final def !=(arg0: Any): Boolean
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  2. final def ##: Int
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  3. final def ==(arg0: Any): Boolean
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  4. final def asInstanceOf[T0]: T0
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  5. def clone(): AnyRef
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    protected[lang]
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    @throws(classOf[java.lang.CloneNotSupportedException]) @IntrinsicCandidate() @native()
  6. final def eq(arg0: AnyRef): Boolean
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  7. def equals(arg0: AnyRef): Boolean
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  8. final def getClass(): Class[_ <: AnyRef]
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    @IntrinsicCandidate() @native()
  9. def hashCode(): Int
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    @IntrinsicCandidate() @native()
  10. final def isInstanceOf[T0]: Boolean
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  11. final def ne(arg0: AnyRef): Boolean
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  12. final def notify(): Unit
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    @IntrinsicCandidate() @native()
  13. final def notifyAll(): Unit
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    @IntrinsicCandidate() @native()
  14. final def synchronized[T0](arg0: => T0): T0
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  15. def toString(): String
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  16. final def wait(arg0: Long, arg1: Int): Unit
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    @throws(classOf[java.lang.InterruptedException])
  17. final def wait(arg0: Long): Unit
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  18. final def wait(): Unit
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Deprecated Value Members

  1. def finalize(): Unit
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    @throws(classOf[java.lang.Throwable]) @Deprecated
    Deprecated

    (Since version 9)

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