public void SimpleJoinOn()
{
OrderCollection collection = new OrderCollection();
collection.es.Connection.ConnectionString =
UnitTestBase.GetFktString(collection.es.Connection);
switch (collection.es.Connection.ProviderSignature.DataProviderName)
{
case "EntitySpaces.MSAccessProvider":
Assert.Ignore("SubQuery inside an ON clause not Supported");
break;
default:
// Query for the Join
OrderItemQuery oiq = new OrderItemQuery("oi");
// SubQuery of OrderItems with a discount
OrderItemQuery oisq = new OrderItemQuery("ois");
oisq.es.Distinct = true;
oisq.Select(oisq.Discount);
oisq.Where(oisq.Discount > 0);
// Orders with discounted items
OrderQuery oq = new OrderQuery("o");
oq.Select(oq.OrderID, oiq.Discount);
oq.InnerJoin(oiq).On(oq.OrderID == oiq.OrderID &
oiq.Discount.In(oisq));
Assert.IsTrue(collection.Load(oq));
Assert.AreEqual(2, collection.Count);
break;
}
}
public void FromClause()
{
OrderCollection collection = new OrderCollection();
collection.es.Connection.Name = "ForeignKeyTest";
switch (collection.es.Connection.ProviderSignature.DataProviderName)
{
//case "EntitySpaces.SqlServerCeProvider":
// Assert.Ignore("Not supported.");
// break;
default:
OrderQuery oq = new OrderQuery("o");
OrderItemQuery oiq = new OrderItemQuery("oi");
// The inner Select contains an aggregate,
// which requires a GroupBy for each non-aggregate in the Select.
// The outer Select includes the aggregate from the inner Select,
// plus columns where no GroupBy was desired.
oq.Select(oq.CustID, oq.OrderDate, oiq.UnitPrice);
oq.From
(
oiq.Select(oiq.OrderID, oiq.UnitPrice.Sum()).GroupBy(oiq.OrderID)
).As("sub");
oq.InnerJoin(oq).On(oq.OrderID == oiq.OrderID);
oq.OrderBy(oq.OrderID.Ascending);
Assert.IsTrue(collection.Load(oq));
Assert.AreEqual(5, collection.Count);
Decimal up = Convert.ToDecimal(collection[0].GetColumn("UnitPrice"));
Assert.AreEqual(5.11m, Math.Round(up, 2));
break;
}
}
public void InnerAlias()
{
OrderCollection collection = new OrderCollection();
collection.es.Connection.ConnectionString =
UnitTestBase.GetFktString(collection.es.Connection);
switch (collection.es.Connection.ProviderSignature.DataProviderName)
{
case "EntitySpaces.MSAccessProvider":
Assert.Ignore("Not supported");
break;
case "EntitySpaces.VistaDBProvider":
case "EntitySpaces.VistaDB4Provider":
OrderQuery oq = new OrderQuery("o");
OrderItemQuery odq = new OrderItemQuery("od");
oq.Select(oq.OrderID, odq.OrderID);
oq.InnerJoin(odq).On(oq.OrderID == odq.OrderID);
oq.OrderBy(oq.OrderID.Ascending);
Assert.IsTrue(collection.Load(oq), "Load");
string lq = collection.Query.es.LastQuery;
Assert.AreEqual(1, collection[0].OrderID.Value, "Property");
Assert.AreEqual(1, Convert.ToInt32(collection[0].GetColumn("OrderID_1")), "Virtual");
break;
default:
oq = new OrderQuery("o");
odq = new OrderItemQuery("od");
oq.Select(oq.OrderID, odq.OrderID);
oq.InnerJoin(odq).On(oq.OrderID == odq.OrderID);
oq.OrderBy(oq.OrderID.Ascending);
Assert.IsTrue(collection.Load(oq), "Load");
lq = collection.Query.es.LastQuery;
Assert.AreEqual(1, collection[0].OrderID.Value, "Property");
Assert.AreEqual(1, Convert.ToInt32(collection[0].GetColumn("OrderID1")), "Virtual");
break;
}
}
public void InnerSelectAllSecondaryQuery()
{
OrderCollection collection = new OrderCollection();
collection.es.Connection.ConnectionString =
UnitTestBase.GetFktString(collection.es.Connection);
OrderQuery oq = new OrderQuery("o");
OrderItemQuery oiq = new OrderItemQuery("oi");
oq.Select(oiq);
oq.InnerJoin(oiq).On(oq.OrderID == oiq.OrderID);
Assert.IsTrue(collection.Load(oq));
Assert.AreEqual(15, collection.Count);
string lq = collection.Query.es.LastQuery;
string all = lq.Substring(7, 4);
Assert.AreEqual("oi.*", all);
}
public void FromClauseWithAlias()
{
OrderCollection collection = new OrderCollection();
collection.es.Connection.Name = "ForeignKeyTest";
OrderQuery oq = new OrderQuery("o");
OrderItemQuery oiq = new OrderItemQuery("oi");
// Calculate total price per order
switch (collection.es.Connection.ProviderSignature.DataProviderName)
{
//case "EntitySpaces.SqlServerCeProvider":
// Assert.Ignore("Not supported.");
// break;
case "EntitySpaces.NpgsqlProvider":
case "EntitySpaces.Npgsql2Provider":
case "EntitySpaces.OracleClientProvider":
oq.Select(oq.CustID, oq.OrderDate, "<sub.\"OrderTotal\">");
break;
default:
oq.Select(oq.CustID, oq.OrderDate, "<sub.OrderTotal>");
break;
}
oq.From
(
oiq.Select(oiq.OrderID,
(oiq.UnitPrice * oiq.Quantity).Sum().As("OrderTotal"))
.GroupBy(oiq.OrderID)
).As("sub");
oq.InnerJoin(oq).On(oq.OrderID == oiq.OrderID);
oq.OrderBy(oq.OrderID.Ascending);
Assert.IsTrue(collection.Load(oq));
Assert.AreEqual(5, collection.Count);
Assert.AreEqual(13.11m, collection[0].GetColumn("OrderTotal"));
}
