MDX filter level member - mysql

Question

My question is how to filter valid field by another field in MDX.
I have one table: samples;
if I use sql to solve problem , just like this:
select patient_id from samples where calc_test_type_id = 1;
I created dimension for this: Patient Characteristic
Hierarchy: id
level : id (patient id in samples table) , including property, named 'testA', 'testA' linked to calc_test_type_id.
So I tried MDX like this :
SELECT
{[Measures].[num_samples]} ON COLUMNS,
{
filter
(
distinct([Patient characteristic.id].[id].members),
[Patient characteristic.id].CurrentMember.Properties("calc_type") = 1
)
} ON ROWS
FROM [EIDCube]
[Measures].[num_samples] is to calculate how many rows for calc_test_type_id = 1.
But I found some data lost. So how to find all suitable patient id ?

Answer 1

Your code looks fine. Try creating the set first. Also I don't think you need distinct:
WITH SET [calc_type1] AS
FILTER
(
[Patient characteristic.id].[id].members)
,[Patient characteristic.id].CurrentMember.Properties("calc_type") = 1
)
SELECT
{[Measures].[num_samples]} ON 0,
[calc_type1] ON 1
FROM [EIDCube];
To check the set returned I'd be tempted to run this script without that measure first, like this:
WITH SET [calc_type1] AS
FILTER
(
[Patient characteristic.id].[id].members)
,[Patient characteristic.id].CurrentMember.Properties("calc_type") = 1
)
SELECT
{} ON 0,
[calc_type1] ON 1
FROM [EIDCube];