protected override ShapedQueryExpression TranslateSum(ShapedQueryExpression source, LambdaExpression selector, Type resultType)
{
var selectExpression = (SelectExpression)source.QueryExpression;
selectExpression.PrepareForAggregate();
var newSelector = selector == null ||
selector.Body == selector.Parameters[0]
? selectExpression.GetMappedProjection(new ProjectionMember())
: ReplacingExpressionVisitor.Replace(selector.Parameters.Single(), source.ShaperExpression, selector.Body);
var projection = _sqlTranslator.TranslateSum(newSelector);
return(AggregateResultShaper(source, projection, throwOnNullResult: false, resultType));
}
protected override ShapedQueryExpression TranslateSum(ShapedQueryExpression source, LambdaExpression selector, Type resultType)
{
var selectExpression = (SelectExpression)source.QueryExpression;
selectExpression.PrepareForAggregate();
var newSelector = selector == null ||
selector.Body == selector.Parameters[0]
? selectExpression.GetMappedProjection(new ProjectionMember())
: RemapLambdaBody(source, selector);
var projection = _sqlTranslator.TranslateSum(newSelector);
return(projection != null
? AggregateResultShaper(source, projection, throwOnNullResult : false, resultType)
: null);
}