github.com/cockroachdb/cockroach@v20.2.0-alpha.1+incompatible/pkg/sql/drop_type.go (about)

     1  // Copyright 2020 The Cockroach Authors.
     2  //
     3  // Use of this software is governed by the Business Source License
     4  // included in the file licenses/BSL.txt.
     5  //
     6  // As of the Change Date specified in that file, in accordance with
     7  // the Business Source License, use of this software will be governed
     8  // by the Apache License, Version 2.0, included in the file
     9  // licenses/APL.txt.
    10  
    11  package sql
    12  
    13  import (
    14  	"context"
    15  
    16  	"github.com/cockroachdb/cockroach/pkg/sql/sem/tree"
    17  	"github.com/cockroachdb/cockroach/pkg/util/errorutil/unimplemented"
    18  	"github.com/cockroachdb/errors"
    19  )
    20  
    21  type dropTypeNode struct {
    22  	n *tree.DropType
    23  }
    24  
    25  // Use to satisfy the linter.
    26  var _ planNode = &dropTypeNode{n: nil}
    27  
    28  func (p *planner) DropType(ctx context.Context, n *tree.DropType) (planNode, error) {
    29  	return nil, unimplemented.NewWithIssue(27793, "DROP TYPE")
    30  }
    31  
    32  func (n *dropTypeNode) startExec(params runParams) error {
    33  	return errors.AssertionFailedf(
    34  		"should not be calling startExec on DROP TYPE node",
    35  	)
    36  }
    37  
    38  func (n *dropTypeNode) Next(params runParams) (bool, error) { return false, nil }
    39  func (n *dropTypeNode) Values() tree.Datums                 { return tree.Datums{} }
    40  func (n *dropTypeNode) Close(ctx context.Context)           {}
    41  func (n *dropTypeNode) ReadingOwnWrites()                   {}