MarkLogic 10 Product Documentationop.namedGroup
op.namedGroup( name as String, [columns as columnIdentifier[]] ) as groupdef
Summary
This function specifies the grouping keys for a group as a named list of zero or more columns. The result is used for building the first parameter for the prototype.groupToArrays function.
| Parameters | |
|---|---|
| name | The name for the list of grouping keys. |
| columns | The columns (if any) to use as grouping keys. The columns can be named with a string or a column parameter function such as op.col or constructed from an expression with op.as. |
See Also
Example
const op = require('/MarkLogic/optic');
op.fromView('main', 'expenses')
.groupToArrays(
[op.namedGroup('total'), op.namedGroup('byCategoryLocation', ['Category', 'Location'])],
op.sum("TotalAmount", "Amount"))
.result();