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// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved. See License.txt in the project root for license information.
namespace System.Data.Entity.Query
{
using System.Data.Entity.Core.Metadata.Edm;
using Xunit;
public class FunctionTests : TestBase
{
private static readonly MetadataWorkspace workspace = QueryTestHelpers.CreateMetadataWorkspace(
ProductModel.csdl, ProductModel.ssdl, ProductModel.msl);
[Fact]
public void Inline_function_count_Products()
{
var query =
@"Function CountProducts(products Collection(ProductModel.Product)) as
(count(select value 1 from products))
select gkey, CountProducts(GroupPartition(P))
FROM ProductContainer.Products as P
Group By P.ProductName as gkey";
var expectedSql =
@"SELECT
1 AS [C1],
[GroupBy1].[K1] AS [ProductName],
[GroupBy1].[A1] AS [C2]
FROM ( SELECT
[Extent1].[ProductName] AS [K1],
COUNT(1) AS [A1]
FROM [dbo].[Products] AS [Extent1]
WHERE [Extent1].[Discontinued] IN (0,1)
GROUP BY [Extent1].[ProductName]
) AS [GroupBy1]";
QueryTestHelpers.VerifyQuery(query, workspace, expectedSql);
}
[Fact]
public void Inline_functions_MaxProductId_and_MinProductId()
{
var query =
@"Function MinProductId(products Collection(ProductModel.Product)) as
(min(select value pp.ProductId from products as pp))
Function MaxProductId(products Collection(ProductModel.Product)) as
(max(select value pp.ProductId from products as pp))
select gkey, MinProductId(GroupPartition(P)), MaxProductId(GroupPartition(P))
FROM ProductContainer.Products as P
Group By P.ProductName as gkey";
var expectedSql =
@"SELECT
1 AS [C1],
[GroupBy1].[K1] AS [ProductName],
[GroupBy1].[A1] AS [C2],
[GroupBy1].[A2] AS [C3]
FROM ( SELECT
[Extent1].[ProductName] AS [K1],
MIN([Extent1].[ProductID]) AS [A1],
MAX([Extent1].[ProductID]) AS [A2]
FROM [dbo].[Products] AS [Extent1]
WHERE [Extent1].[Discontinued] IN (0,1)
GROUP BY [Extent1].[ProductName]
) AS [GroupBy1]";
QueryTestHelpers.VerifyQuery(query, workspace, expectedSql);
}
[Fact]
public void Inline_function_MaxMinProductId()
{
var query =
@"Function MaxMinProductId(products Collection(ProductModel.Product)) as
(
max(select value pp.ProductId from products as pp) -
min(select value pp.ProductId from products as pp)
)
select gkey, MaxMinProductId(GroupPartition(p))
FROM ProductContainer.Products as P
Group By P.ProductName as gkey";
var expectedSql =
@"SELECT
1 AS [C1],
[GroupBy1].[K1] AS [ProductName],
[GroupBy1].[A1] - [GroupBy1].[A2] AS [C2]
FROM ( SELECT
[Extent1].[ProductName] AS [K1],
MAX([Extent1].[ProductID]) AS [A1],
MIN([Extent1].[ProductID]) AS [A2]
FROM [dbo].[Products] AS [Extent1]
WHERE [Extent1].[Discontinued] IN (0,1)
GROUP BY [Extent1].[ProductName]
) AS [GroupBy1]";
QueryTestHelpers.VerifyQuery(query, workspace, expectedSql);
}
[Fact]
public void Inline_function_one_level_above()
{
var query =
@"Function MaxProductId(products Collection(ProductModel.Product)) as
(
max(select value pp.ProductId from products as pp)
)
select i.gkey, (MaxProductId(i.groupProducts))
from (
select gkey as gkey, GroupPartition(P) as groupProducts
FROM ProductContainer.Products as P
Group By P.ProductName as gkey
) as i";
var expectedSql =
@"SELECT
1 AS [C1],
[GroupBy1].[K1] AS [ProductName],
[GroupBy1].[A1] AS [C2]
FROM ( SELECT
[Extent1].[ProductName] AS [K1],
MAX([Extent1].[ProductID]) AS [A1]
FROM [dbo].[Products] AS [Extent1]
WHERE [Extent1].[Discontinued] IN (0,1)
GROUP BY [Extent1].[ProductName]
) AS [GroupBy1]";
QueryTestHelpers.VerifyQuery(query, workspace, expectedSql);
}
[Fact]
public void Inline_function_MaxInt()
{
var query =
@"Function MaxInt(i Collection(Int32)) as (max(i))
select gkey, MaxInt(groupPartition(a))
FROM {1,1,2,2,2} as a
Group By a as gkey";
var expectedSql =
@"SELECT
[GroupBy1].[K1] AS [C1],
[GroupBy1].[A1] AS [C2]
FROM ( SELECT
[UnionAll4].[C1] AS [K1],
MAX([UnionAll4].[C1]) AS [A1]
FROM (SELECT
[UnionAll3].[C1] AS [C1]
FROM (SELECT
[UnionAll2].[C1] AS [C1]
FROM (SELECT
[UnionAll1].[C1] AS [C1]
FROM (SELECT
1 AS [C1]
FROM ( SELECT 1 AS X ) AS [SingleRowTable1]
UNION ALL
SELECT
1 AS [C1]
FROM ( SELECT 1 AS X ) AS [SingleRowTable2]) AS [UnionAll1]
UNION ALL
SELECT
2 AS [C1]
FROM ( SELECT 1 AS X ) AS [SingleRowTable3]) AS [UnionAll2]
UNION ALL
SELECT
2 AS [C1]
FROM ( SELECT 1 AS X ) AS [SingleRowTable4]) AS [UnionAll3]
UNION ALL
SELECT
2 AS [C1]
FROM ( SELECT 1 AS X ) AS [SingleRowTable5]) AS [UnionAll4]
GROUP BY [UnionAll4].[C1]
) AS [GroupBy1]";
QueryTestHelpers.VerifyQuery(query, workspace, expectedSql);
}
[Fact]
public void Inline_aggregate_funtion_MinProductId()
{
var query =
@"Function MinProductId(products Collection(ProductModel.Product)) as
(
anyelement(select value min(pp.ProductId) from products as pp)
)
select gkey, MinProductId(GroupPartition(P))
FROM ProductContainer.Products as P
Group By P.ProductName as gkey";
var expectedSql =
@"SELECT
1 AS [C1],
[Project2].[ProductName] AS [ProductName],
[Project2].[C1] AS [C2]
FROM ( SELECT
[Distinct1].[ProductName] AS [ProductName],
(SELECT
MIN([Extent2].[ProductID]) AS [A1]
FROM [dbo].[Products] AS [Extent2]
WHERE ([Extent2].[Discontinued] IN (0,1)) AND (([Distinct1].[ProductName] = [Extent2].[ProductName]) OR (([Distinct1].[ProductName] IS NULL) AND ([Extent2].[ProductName] IS NULL)))) AS [C1]
FROM ( SELECT DISTINCT
[Extent1].[ProductName] AS [ProductName]
FROM [dbo].[Products] AS [Extent1]
WHERE [Extent1].[Discontinued] IN (0,1)
) AS [Distinct1]
) AS [Project2]";
QueryTestHelpers.VerifyQuery(query, workspace, expectedSql);
}
}
}
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