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

     1  // Copyright 2016 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  // This file implements the select code that deals with column references
    12  // and resolving column names in expressions.
    13  
    14  package sql
    15  
    16  import (
    17  	"github.com/cockroachdb/cockroach/pkg/sql/sem/tree"
    18  	"github.com/cockroachdb/cockroach/pkg/sql/sqlbase"
    19  )
    20  
    21  // resolveNames walks the provided expression and resolves all names
    22  // using the tableInfo and iVarHelper.
    23  func (p *planner) resolveNames(
    24  	expr tree.Expr, source *sqlbase.DataSourceInfo, ivarHelper tree.IndexedVarHelper,
    25  ) (tree.Expr, error) {
    26  	if expr == nil {
    27  		return nil, nil
    28  	}
    29  	return sqlbase.ResolveNamesUsingVisitor(&p.nameResolutionVisitor, expr, source, ivarHelper, p.SessionData().SearchPath)
    30  }