deletion

type Argument struct {
	Ts           uint64
	DeleteCtx    *DeleteCtx
	AffectedRows uint64
	Engine       engine.Engine
	// when detele data in a remote CN,
	// IsRemote is true, and we need IBucket
	// and NBucket to know those data in batch
	// that we need to delete in this CN, because
	// we need to make sure one Block will be processed
	// by only one CN, this is useful for our compaction
	IsRemote bool
	IBucket  uint64
	NBucket  uint64
}

type DeleteCtx struct {
	CanTruncate bool

	DelSource []engine.Relation
	DelRef    []*plan.ObjectRef

	IdxSource []engine.Relation
	IdxIdx    []int32

	OnRestrictIdx []int32

	OnCascadeSource []engine.Relation
	OnCascadeIdx    []int32

	OnSetSource       []engine.Relation
	OnSetUniqueSource [][]engine.Relation
	OnSetIdx          [][]int32
	OnSetRef          []*plan.ObjectRef
	OnSetTableDef     []*plan.TableDef
	OnSetUpdateCol    []map[string]int32
}