CreateQuery mv_dst (children 3)
 Identifier mv_dst
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectQuery (children 3)
    ExpressionList (children 3)
     Identifier a
     Function sumState (alias sum_b) (children 1)
      ExpressionList (children 1)
       Identifier b
     Function uniqState (alias uniq_b) (children 1)
      ExpressionList (children 1)
       Identifier b
    TablesInSelectQuery (children 1)
     TablesInSelectQueryElement (children 1)
      TableExpression (children 1)
       TableIdentifier dst_null
    ExpressionList (children 1)
     Identifier a
 ViewTargets (children 1)
  Storage definition (children 2)
   Function AggregatingMergeTree (children 1)
    ExpressionList
   Identifier a
