doctrine / orm

            case ($expr instanceof AST\NullIfExpression):

            case ($expr instanceof AST\CoalesceExpression):

            case ($expr instanceof AST\GeneralCaseExpression):

            case ($expr instanceof AST\SimpleCaseExpression):

                $columnAlias = $this->getSQLColumnAlias('sclr');

                $resultAlias = $selectExpression->fieldIdentificationVariable ?: $this->scalarResultCounter++;

                $sql .= $expr->dispatch($this) . ' AS ' . $columnAlias;

                $this->scalarResultAliasMap[$resultAlias] = $columnAlias;

                if ( ! $hidden) {

                    // We cannot resolve field type here; assume 'string'.

                    $this->rsm->addScalarResult($columnAlias, $resultAlias, 'string');

                }

                break;

            case ($expr instanceof AST\Subselect):

                $columnAlias = $this->getSQLColumnAlias('sclr');

                }

                break;

            case ($expr instanceof AST\Subselect):

                $columnAlias = $this->getSQLColumnAlias('sclr');

                $resultAlias = $selectExpression->fieldIdentificationVariable ?: $this->scalarResultCounter++;

                $sql .= '(' . $this->walkSubselect($expr) . ') AS ' . $columnAlias;

                $this->scalarResultAliasMap[$resultAlias] = $columnAlias;

                if ( ! $hidden) {

                    // We cannot resolve field type here; assume 'string'.

                    $this->rsm->addScalarResult($columnAlias, $resultAlias, 'string');

                }

                break;

            case ($expr instanceof AST\NewObjectExpression):

                $sql .= $this->walkNewObject($expr,$selectExpression->fieldIdentificationVariable);