A sort definition consisting of an expression and sort direction.
Report sorting and group sorting is defined as a series of column, sort direction pairs. Each pair is a Sort Criteria structure.
An expression that gives the sort key on which to sort.
An expression that gives the sort key on which to sort. The simplest case is the name of a column. The expression can also be an expression that includes columns. When used for a group, the expression can contain an aggregate computed over the group.
Expressions that include only a column name are candidates for "pushing" into the data set. However, sort keys that are expressions must be evaluated within BIRT, and so the sorting itself must occur within BIRT.
The sort direction: Ascending (the default) or Descending.
The sort direction: Ascending (the default) or Descending.