Deveel.Data.AggregateFunctionTests.DistinctCount C# (CSharp) Method

        public void DistinctCount()
        {
            var result = SelectAggregate("DISTINCT_COUNT", SqlExpression.Reference(new ObjectName("a")));
            Assert.IsNotNull(result);
            Assert.IsFalse(result.IsNull);
            Assert.IsInstanceOf<NumericType>(result.Type);
            Assert.IsInstanceOf<SqlNumber>(result.Value);

            var value = (SqlNumber)result.Value;
            Assert.AreEqual(new SqlNumber(15), value);
        }