こんなことしたい…
SELECT DISTINCT T1.*
FROM T1
INNER JOIN T2 ON T2.ID1 = T1.ID1
INNER JOIN T3 ON T3.ID2 = T2.ID2
--FOLLOWING CAN BE ADDED MULTIPLE TIMES (LOOPS IN C#?)
INNER JOIN T2 AS T2A ON T3.ID2 = T2A.ID2
INNER JOIN T1 AS T1A ON T1A.ID1 = T2A.ID1
--END MULTI
WHERE T1.ID1 = 1
AND T3.ID3 = 2
AND T3.ID4 = 3
--THE FOLLOWING CONDITIONS WILL ALSO BE FOR EVERY SET OF EXTRA JOINS (LOOPS IN C#?)
AND T1A.ID1 = 4
AND T1I.ID5 = 5
--END MULTI
...LinqまたはLLBLGenコードのいずれか。どんな助けでも大歓迎です!
これが私がこれまでに持っているLLBGenです...
IPredicateExpression filter = new PredicateExpression();
filter.Add(ProductTypeOptionAttributeFields.OptionId == dl.Key);
filter.AddWithAnd(ProductTypeOptionAttributeCombinationFields.ProductTypeId == DataSource.DataItem.ProductTypeId);
filter.AddWithAnd(ProductTypeOptionAttributeCombinationFields.ProductId == DataSource.ProductID);
bucket.PredicateExpression.Add(filter);
bucket.Relations.Add(ProductTypeOptionAttributeEntity.Relations.ProductTypeOptionAttributeCombinationProfileEntityUsingProductTypeOptionAttributeId, JoinHint.Inner);
bucket.Relations.Add(ProductTypeOptionAttributeCombinationProfileEntity.Relations.ProductTypeOptionAttributeCombinationEntityUsingProductTypeOptionAttributeCombinationId, JoinHint.Inner);
var filtered = _dropdowns.Where(k => ((DropDownList)k.Value[1]).SelectedValue != "-1" && k.Key != dl.Key);
foreach (var filteredDdl in filtered)
{
IPredicateExpression subFilter = new PredicateExpression();
subFilter.AddWithAnd(ProductTypeOptionAttributeFields.AttributeId == int.Parse(((DropDownList)filteredDdl.Value[1]).SelectedValue));
subFilter.AddWithAnd(ProductTypeOptionAttributeFields.OptionId == filteredDdl.Key);
bucket.PredicateExpression.AddWithAnd(subFilter);
}
ProductTypeOptionAttributeCollection attrs = new ProductTypeOptionAttributeCollection();
attrs.GetMulti(bucket.PredicateExpression, -1, null, bucket.Relations);
そして、これが私が欲しい実際のクエリです...
SELECT DISTINCT PTOA.*
FROM ProductTypeOptionAttribute AS PTOA
INNER JOIN ProductTypeOPtionAttributeCombinationProfile AS PTOACP ON PTOACP.ProductTypeOPtionAttributeID = PTOA.AttributeID
INNER JOIN ProductTypeOPtionAttributeCombination AS PTOAC ON PTOAC.CombinationID = PTOACP.ProductTypeOptionAttributeCombinationID
--FOLLOWING CAN BE ADDED MULTIPLE TIMES (LOOPS IN C#?)
INNER JOIN ProductTypeOPtionAttributeCombinationProfile AS PTOACP2 ON PTOAC.CombinationID = PTOACP2.ProductTypeOptionAttributeCombinationID
INNER JOIN ProductTypeOPtionAttribute AS PTOA2 ON PTOACP2.ProductTypeOPtionAttributeID = PTOA2.AttributeID
--END MULTI
WHERE PTOA.OptionID = 59
AND PTOAC.ProductTypeID = 11
AND PTOAC.ProductID = 218
--THE FOLLOWING CONDITIONS WILL ALSO BE FOR EVERY SET OF EXTRA JOINS (LOOPS IN C#?)
AND PTOA2.AttributeID = 42
AND PTOA2.OptionID = 58
--END MULTI
乾杯