A single aggregate column within an AggregateGroup. The op
determines which aggregate is computed for the column, and key is the
property the operation is applied to.
Every operation operates on a property and therefore requires a key, except
COUNT, which counts rows and takes none. A GROUP column groups the result
by key, producing one response row per distinct value.
A single aggregate column within an AggregateGroup. The
opdetermines which aggregate is computed for the column, andkeyis the property the operation is applied to.Every operation operates on a property and therefore requires a
key, exceptCOUNT, which counts rows and takes none. AGROUPcolumn groups the result bykey, producing one response row per distinct value.