public void Correlated()
{
OrderItemCollection collection = new OrderItemCollection();
collection.es.Connection.ConnectionString =
UnitTestBase.GetFktString(collection.es.Connection);
OrderItemQuery oiq = new OrderItemQuery("oi");
ProductQuery pq = new ProductQuery("p");
// oiq.ProductID in the inner Select is pulled from
// the outer Select, making a correlated SubQuery.
oiq.Select(
oiq.OrderID,
(oiq.Quantity * oiq.UnitPrice).Sum().As("Total")
);
oiq.Where(oiq.ProductID
.In(
pq.Select(pq.ProductID)
.Where(oiq.ProductID == pq.ProductID)
)
);
oiq.GroupBy(oiq.OrderID);
Assert.IsTrue(collection.Load(oiq));
Assert.AreEqual(5, collection.Count);
}
public void HavingWithComplexExpression()
{
OrderItemCollection coll = new OrderItemCollection();
coll.es.Connection.Name = "ForeignKeyTest";
OrderItemQuery q = new OrderItemQuery();
q.Select(q.OrderID, (q.Quantity * q.UnitPrice).Sum().As("TotalPrice"));
q.Where(q.Discount.IsNull());
q.GroupBy(q.OrderID);
q.Having((q.Quantity * q.UnitPrice).Sum() > 500);
switch (coll.es.Connection.ProviderSignature.DataProviderName)
{
case "EntitySpaces.SqlServerCeProvider":
case "EntitySpaces.SqlServerCe4Provider":
case "EntitySpaces.VistaDBProvider":
case "EntitySpaces.VistaDB4Provider":
q.OrderBy("<TotalPrice>", esOrderByDirection.Descending);
break;
default:
q.OrderBy((q.Quantity * q.UnitPrice).Sum().Descending);
break;
}
Assert.IsTrue(coll.Load(q), "Load");
Assert.AreEqual(2, coll.Count, "Count");
decimal price = Convert.ToDecimal(coll[0].GetColumn("TotalPrice"));
Assert.AreEqual(1940.0M, price, "GetColumn");
}
public void HavingWithSimpleExpression()
{
OrderItemCollection coll = new OrderItemCollection();
coll.es.Connection.Name = "ForeignKeyTest";
OrderItemQuery q = new OrderItemQuery();
//q.es2.Connection.Name = "ForeignKeyTest";
q.Select(q.OrderID, q.Quantity.Sum().As("TotalQty"));
q.Where(q.Discount.IsNull());
q.GroupBy(q.OrderID);
switch (coll.es.Connection.ProviderSignature.DataProviderName)
{
case "EntitySpaces.SqlServerCeProvider":
case "EntitySpaces.SqlServerCe4Provider":
case "EntitySpaces.VistaDBProvider":
case "EntitySpaces.VistaDB4Provider":
q.Having(q.Quantity.Sum() > 100);
q.OrderBy("<TotalQty>", esOrderByDirection.Descending);
break;
case "EntitySpaces.SQLiteProvider":
q.Having((q.Quantity * 1).Sum() > 100);
q.OrderBy(q.Quantity.Sum().Descending);
break;
default:
q.Having(q.Quantity.Sum() > 100);
q.OrderBy(q.Quantity.Sum().Descending);
break;
}
Assert.IsTrue(coll.Load(q), "Load");
Assert.AreEqual(3, coll.Count, "Count");
int qty = Convert.ToInt32(coll[0].GetColumn("TotalQty"));
Assert.AreEqual(240, qty, "GetColumn");
}
public void OneAddAggregate()
{
OrderItemCollection collection = new OrderItemCollection();
collection.es.Connection.Name = "ForeignKeyTest";
OrderItemQuery oiq = new OrderItemQuery("oiq");
oiq.Select(oiq.ProductID,
(oiq.UnitPrice + oiq.Discount).Sum().As("SomeDecimal"));
oiq.GroupBy(oiq.ProductID);
oiq.OrderBy(oiq.ProductID, esOrderByDirection.Ascending);
Assert.IsTrue(collection.Load(oiq));
decimal someDec = Convert.ToDecimal(collection[0].GetColumn("SomeDecimal"));
Assert.AreEqual(Convert.ToDecimal("0.12"), Math.Round(someDec, 2));
}
