Reading column data type in SSAS tabular database using adomd

Question

I am working on SSAS tabular database and I need to find out the column datatype. I am using ADOMD for this. So far I looked at AdomdDataReader.GetSchemaTable
Method & looked at the below code snippet to retrive Metadata from the AdomdDataReader.
foreach (DataRow objRow in schemaTable.Rows)
foreach (DataColumn objColumn in schemaTable.Columns)
Console.WriteLine(objColumn.ColumnName + " = " + objRow[objColumn]);
Console.WriteLine();
I wonder with only the list of columns available to me, how can I execute a query/command and utilize adomd reader to get this information?
What is the best approach to read column metadata?

Answer 1

Hi, One option that you can try is to use AMO. Here is a sample code that connects to multi-dimensional model.
http://sqlblogcasts.com/blogs/drjohn/archive/2012/03/15/ssas-utility-to-check-you-have-the-correct-data-types-and-sizes-in-your-cube-definition.aspx
You will have to change few things to make it work for tabular model. Sorry, I did not try myself but I hope this will give you some ideas.
// get DSV - this code assumes only one DSV in cube definition
AMO.DataSourceView
dsv = olapDatabase.DataSourceViews[0];
foreach (AMO.Dimension
dim in olapDatabase.Dimensions)
 foreach (AMO.DimensionAttribute
attr in dim.Attributes)
 foreach (AMO.DataItem
dItem in attr.KeyColumns)
     AddAttributeDataItem(dtCubeDataTypes,
"Key", dsv, attr, dItem);
AMO.DataItem contains column size and data type when connected to a tabular database.