Project: talenddataquality
Issue TDQ-5694: for mdm analysis in java engine can not get the row count, null count  successfully for record which contains null value.
1. create a column analysis about mdm connection. 2. run with java engine check the result for row count and null count, can not get the rows for which values is NULL. for example, there is an entity has 4 records--a,a, b and NULL, so the 'row count' is 3, and 'null count' is 0, and distinct is 2, in fact should be 4,1 and 3. note: for distinct, both sql and java should change.
Story points: 13