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| ID | | (Required) The ID attribute is a pervasive attribute that uniquely identifies an element within a definition file. The ID needs to be a unique value within the definition. |
| SubDataGroupColumns | | (Required) Group Columns is a list of one or more columns that uniquely identifies a group of records. In a hierarchical rowset, each unique group creates a parent record. Separate each column with a comma. For example, to group records by customer and order, you might specify "CustomerID,OrderID". |
| SubDataSelectColumns | | Select Columns is a list of one or more columns you want included in the parent rows. Normally, only the Group Columns are included. However, you need to use Select Columns for values that you want to display in the parent row. (All fields are automatically included for the bottom-most SubData Group.) Separate each column with a comma. For example, to include the company name and contact name in the parent DataTable, you might specify "CompanyName,ContactName". |