| Function | Description |
| Ancestor | Returns the ancestor of a member at a specified level or distance. |
| ClosingPeriod | Returns the last sibling among the descendants of a member at a specified level. |
| Cousin | Returns the child member with the same relative position under a parent member as the specified child member. |
| CurrentMember | Returns the current member along a specified dimension or hierarchy during iteration. |
| DataMember | Returns the system-generated data member that is associated with a nonleaf member of a dimension. |
| DefaultMember | Returns the default member of a dimension or hierarchy. |
| FirstChild | Returns the first child of a member. |
| FirstSibling | Returns the first child of the parent of a member. |
| Item (Member) | Returns a member from a specified tuple. |
| Lag | Returns the member that is a specified number of positions before a specified member along the member's dimension. |
| LastChild | Returns the last child of a specified member. |
| LastSibling | Returns the last child of the parent of a specified member. |
| Lead | Returns the member that is a specified number of positions following a specified member along the member's dimension. |
| LinkMember | Returns the member equivalent to a specified member in a specified hierarchy. |
| Members (String) | Returns a member specified by a string expression. |
| NextMember | Returns the next member in the level that contains a specified member. |
| OpeningPeriod | Returns the first sibling among the descendants of a specified level, optionally at a specified member. |
| ParallelPeriod | Returns a member from a prior period in the same relative position as a specified member. |
| Parent | Returns the parent of a member. |
| PrevMember | Returns the previous member in the level that contains a specified member. |
| StrToMember | Returns the member specified by an MDX-formatted string. |
| UnknownMember | Returns the unknown member associated with a level or member. |
| ValidMeasure | Returns a valid measure in a virtual cube by forcing inapplicable dimensions to their top level. |