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https://github.com/featurebasedb/featurebase.git
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e24978c4a7
* ID sql3 internal type representation is int64; fixed a bug that assumed incorrectly that it wasn't * refactored some names for clarity * primary: get nested loop joins to work; secondary get brute force aggregations for SUM working * added tests; removed debug output * review feedback * Update sql3/planner/compileselect.go review feedback Co-authored-by: Travis Turner <travis@pilosa.com> Co-authored-by: Travis Turner <travis@pilosa.com>
72 lines
1.6 KiB
Go
72 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/featurebasedb/featurebase/v3/sql3/planner/types"
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)
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// PlanOpTop implements the TOP operator
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type PlanOpTop struct {
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ChildOp types.PlanOperator
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expr types.PlanExpression
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warnings []string
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}
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func NewPlanOpTop(expr types.PlanExpression, child types.PlanOperator) *PlanOpTop {
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return &PlanOpTop{
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ChildOp: child,
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expr: expr,
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warnings: make([]string, 0),
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}
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}
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func (p *PlanOpTop) Schema() types.Schema {
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return p.ChildOp.Schema()
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}
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func (p *PlanOpTop) 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 *PlanOpTop) 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 *PlanOpTop) WithChildren(children ...types.PlanOperator) (types.PlanOperator, error) {
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return nil, nil
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}
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func (p *PlanOpTop) 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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sc := make([]string, 0)
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for _, e := range p.Schema() {
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sc = append(sc, fmt.Sprintf("'%s', '%s', '%s'", e.ColumnName, e.RelationName, e.Type.TypeName()))
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}
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result["_schema"] = sc
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result["expr"] = p.expr
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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 *PlanOpTop) String() string {
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return ""
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}
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func (p *PlanOpTop) AddWarning(warning string) {
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p.warnings = append(p.warnings, warning)
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}
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func (p *PlanOpTop) Warnings() []string {
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var w []string
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w = append(w, p.warnings...)
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w = append(w, p.ChildOp.Warnings()...)
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return w
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}
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