mirror of
https://github.com/featurebasedb/featurebase.git
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f030d58d95
* implemented distinct * implemented distinct * uses first cut of a buffer pool, and extendible hashing with thresholded spill to disk * tests * cleaned up some stuff around query plan output to make developing tooling easier * added optimization to call PQL Distinct() * fixed test * fix for passing wrong index name in orchestrator * back out change to DistinctTimestamp * fix other instance of wrong table name being passed * use full index name instead of abbreviated one for translation. sigh. * removed some unused code Co-authored-by: Matthew Jaffee <jaffee@pilosa.com>
74 lines
1.6 KiB
Go
74 lines
1.6 KiB
Go
// Copyright 2022 Molecula Corp. All rights reserved.
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package planner
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import (
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"context"
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"fmt"
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"github.com/molecula/featurebase/v3/sql3"
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"github.com/molecula/featurebase/v3/sql3/planner/types"
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)
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// PlanOpSubquery is an operator for a subquery
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type PlanOpSubquery struct {
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ChildOp types.PlanOperator
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warnings []string
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}
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func NewPlanOpSubquery(child types.PlanOperator) *PlanOpSubquery {
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return &PlanOpSubquery{
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ChildOp: child,
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warnings: make([]string, 0),
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}
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}
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func (p *PlanOpSubquery) Schema() types.Schema {
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return p.ChildOp.Schema()
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}
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func (p *PlanOpSubquery) Iterator(ctx context.Context, row types.Row) (types.RowIterator, error) {
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return p.ChildOp.Iterator(ctx, row)
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}
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func (p *PlanOpSubquery) Children() []types.PlanOperator {
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return []types.PlanOperator{
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p.ChildOp,
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}
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}
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func (p *PlanOpSubquery) WithChildren(children ...types.PlanOperator) (types.PlanOperator, error) {
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if len(children) != 1 {
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return nil, sql3.NewErrInternalf("unexpected number of children '%d'", len(children))
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}
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return NewPlanOpSubquery(children[0]), nil
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}
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func (p *PlanOpSubquery) Plan() map[string]interface{} {
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result := make(map[string]interface{})
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result["_op"] = fmt.Sprintf("%T", p)
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result["_schema"] = p.Schema().Plan()
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result["child"] = p.ChildOp.Plan()
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return result
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}
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func (p *PlanOpSubquery) String() string {
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return ""
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}
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func (p *PlanOpSubquery) AddWarning(warning string) {
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p.warnings = append(p.warnings, warning)
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}
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func (p *PlanOpSubquery) Warnings() []string {
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var w []string
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w = append(w, p.warnings...)
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if p.ChildOp != nil {
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w = append(w, p.ChildOp.Warnings()...)
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}
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return w
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}
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func (p *PlanOpSubquery) Name() string {
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return ""
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}
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