Function unresolvedNameToColName

server/ast/expr.go:875–903

unresolvedNameToColName converts a tree.UnresolvedName to a vitess.ColName with the appropriate name qualifiers set.

(name *tree.UnresolvedName)

// unresolvedNameToColName converts a tree.UnresolvedName to a vitess.ColName with the appropriate name qualifiers set.
func unresolvedNameToColName(name *tree.UnresolvedName) (*vitess.ColName, error) {
	var tableName vitess.TableName
	switch name.NumParts {
	case 4:
		tableName = vitess.TableName{
			Name:            vitess.NewTableIdent(name.Parts[1]),
			SchemaQualifier: vitess.NewTableIdent(name.Parts[2]),
			DbQualifier:     vitess.NewTableIdent(name.Parts[3]),
		}
	case 3:
		tableName = vitess.TableName{
			Name:            vitess.NewTableIdent(name.Parts[1]),
			SchemaQualifier: vitess.NewTableIdent(name.Parts[2]),
		}
	case 2:
		tableName = vitess.TableName{
			Name: vitess.NewTableIdent(name.Parts[1]),
		}
	case 1:
		// no table name
	default:
		return nil, errors.Errorf("invalid name: %s", name)
	}

	return &vitess.ColName{
		Name:      vitess.NewColIdent(name.Parts[0]),
		Qualifier: tableName,
	}, nil
}

// translateConvertType translates the *vitess.ConvertType expression given to a new one, substituting type names as
// appropriate. An error is returned if the type named cannot be supported.