CreateQuery simple_agg_groupArrayLastArray (children 3)
 Identifier simple_agg_groupArrayLastArray
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration key (children 1)
    DataType Int
   ColumnDeclaration value (children 1)
    DataType SimpleAggregateFunction (children 1)
     ExpressionList (children 2)
      Function groupArrayLastArray (children 1)
       ExpressionList (children 1)
        Literal UInt64_5
      DataType Array (children 1)
       ExpressionList (children 1)
        DataType UInt64
 Storage definition (children 2)
  Function AggregatingMergeTree (children 1)
   ExpressionList
  Identifier key