-- basic test drop table if exists simple; create table simple (id UInt64,val SimpleAggregateFunction(sum,Double)) engine=AggregatingMergeTree order by id; insert into simple select number,number from system.numbers limit 10; select * from simple; select * from simple final; select toTypeName(val) from simple limit 1; -- merge insert into simple select number,number from system.numbers limit 10; select * from simple final; optimize table simple final; select * from simple; -- complex types drop table if exists simple; create table simple ( id UInt64, nullable_str SimpleAggregateFunction(anyLast,Nullable(String)), low_str SimpleAggregateFunction(anyLast,LowCardinality(Nullable(String))), ip SimpleAggregateFunction(anyLast,IPv4), status SimpleAggregateFunction(groupBitOr, UInt32), tup SimpleAggregateFunction(sumMap, Tuple(Array(Int32), Array(Int64))) ) engine=AggregatingMergeTree order by id; insert into simple values(1,'1','1','1.1.1.1', 1, ([1,2], [1,1])); insert into simple values(1,null,'2','2.2.2.2', 2, ([1,3], [1,1])); -- String longer then MAX_SMALL_STRING_SIZE (actual string length is 100) insert into simple values(10,'10','10','10.10.10.10', 4, ([2,3], [1,1])); insert into simple values(10,'2222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222','20','20.20.20.20', 1, ([2, 4], [1,1])); select * from simple final; select toTypeName(nullable_str),toTypeName(low_str),toTypeName(ip),toTypeName(status), toTypeName(tup) from simple limit 1; optimize table simple final; drop table simple;