array_agg_distinct¶
Description¶
Returns an array of distinct input values. The expression must be a valid
expression (not a regex or other type). Different from
array_agg, array_agg_distinct does not accept an order_by
argument, and the order of values in the output array is non-deterministic.
Return type¶
generic array
Domain¶
This is an aggregate function (aggregates rows over a group in aggregate verbs.)
Categories¶
Usage¶
array_agg_distinct(expr)
Argument |
Type |
Optional |
Repeatable |
Restrictions |
|---|---|---|---|---|
expr |
storable |
no |
no |
none |
Examples¶
statsby server_type:array_agg_distinct(server_type), group_by(region)
Sets server_type to an array containing all distinct server types for each
region. The order of the server types in each region is non-deterministic.