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Revert "Return empty DataTable from GetSchemaTable. (#419)" #696

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Merged
merged 2 commits into from
Aug 20, 2020
Merged

Revert "Return empty DataTable from GetSchemaTable. (#419)" #696

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0dd6b0c
Revert "Return empty DataTable from GetSchemaTable. (#419)"
cheenamalhotra Aug 18, 2020
7b9420f
Nit fix
cheenamalhotra Aug 20, 2020
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2 changes: 1 addition & 1 deletion src/Microsoft.Data.SqlClient/netcore/src/Microsoft/Data/SqlClient/SqlDataReader.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -1454,7 +1454,7 @@ public override DataTable GetSchemaTable()
Debug.Assert(null != _metaData.schemaTable, "No schema information yet!");
}
}
return _metaData?.schemaTable ?? new DataTable();
return _metaData?.schemaTable;
}
finally
{
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3 changes: 1 addition & 2 deletions src/Microsoft.Data.SqlClient/netfx/src/Microsoft/Data/SqlClient/SqlDataReader.cs
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Expand Up @@ -1681,10 +1681,9 @@ override public DataTable GetSchemaTable()
{
_metaData.schemaTable = BuildSchemaTable();
Debug.Assert(null != _metaData.schemaTable, "No schema information yet!");
// filter table?
}
}
return _metaData?.schemaTable ?? new DataTable();
return _metaData?.schemaTable;
}
finally
{
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19 changes: 1 addition & 18 deletions src/Microsoft.Data.SqlClient/tests/ManualTests/SQL/DataReaderTest/DataReaderTest.cs
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Expand Up @@ -38,6 +38,7 @@ public static void LoadReaderIntoDataTableToTestGetSchemaTable()
[ConditionalFact(typeof(DataTestUtility), nameof(DataTestUtility.AreConnStringsSetup))]
public static void MultiQuerySchema()
{
SqlConnectionStringBuilder builder = new SqlConnectionStringBuilder(DataTestUtility.TCPConnectionString);
using (SqlConnection connection = new SqlConnection(DataTestUtility.TCPConnectionString))
{
connection.Open();
Expand Down Expand Up @@ -66,25 +67,7 @@ public static void MultiQuerySchema()
}
}

[ConditionalFact(typeof(DataTestUtility), nameof(DataTestUtility.AreConnStringsSetup))]
public static void GetSchemaTable_returns_null_when_no_resultset()
{
using (SqlConnection connection = new SqlConnection(DataTestUtility.TCPConnectionString))
{
connection.Open();

using (SqlCommand command = connection.CreateCommand())
{
command.CommandText = "SELECT 1";
using (SqlDataReader reader = command.ExecuteReader())
{
reader.NextResult();
Assert.NotNull(reader.GetSchemaTable());
}
}
}
}

// Checks for the IsColumnSet bit in the GetSchemaTable for Sparse columns
[ConditionalFact(typeof(DataTestUtility), nameof(DataTestUtility.AreConnStringsSetup))]
public static void CheckSparseColumnBit()
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