The limitSpec field provides the functionality to sort and limit the set of results from a groupBy query. If you group by a single dimension and are ordering by a single metric, we highly recommend using TopN Queries instead. The performance will be substantially better. Available options are:
The default limit spec takes a limit and the list of columns to do an orderBy operation over. The grammar is:
{ "type" : "default", "limit" : <integer_value>, "columns" : [list of OrderByColumnSpec], }
OrderByColumnSpecs indicate how to do order by operations. Each order-by condition can be a jsonString or a map of the following form:
{ "dimension" : "<Any dimension or metric name>", "direction" : <"ascending"|"descending">, "dimensionOrder" : <"lexicographic"(default)|"alphanumeric"|"strlen"|"numeric"> }
If only the dimension is provided (as a JSON string), the default order-by is ascending with lexicographic sorting.
See Sorting Orders for more information on the sorting orders specified by “dimensionOrder”.