Npgsql.Tests.ReaderNewSchemaTests.BaseColumnName C# (CSharp) Method

        public void BaseColumnName()
        {
            using (var conn = OpenConnection())
            {
                conn.ExecuteNonQuery("CREATE TEMP TABLE data (foo INTEGER)");

                using (var cmd = new NpgsqlCommand("SELECT foo,8 AS bar,8,'8'::VARCHAR(10) FROM data", conn))
                using (var reader = cmd.ExecuteReader(CommandBehavior.SchemaOnly))
                {
                    var columns = reader.GetColumnSchema();
                    Assert.That(columns[0].BaseColumnName, Is.EqualTo("foo"));
                    Assert.That(columns[1].BaseColumnName, Is.EqualTo("bar"));
                    Assert.That(columns[2].BaseColumnName, Is.Null);
                    Assert.That(columns[3].BaseColumnName, Is.EqualTo("varchar"));
                }
            }
        }