SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 4)
   ExpressionList (children 1)
    Function greater (children 1)
     ExpressionList (children 2)
      Function arrayElement (children 1)
       ExpressionList (children 2)
        Identifier ProfileEvents
        Literal \'ParallelReplicasUsedCount\'
      Literal UInt64_0
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier system.query_log
   Function and (children 1)
    ExpressionList (children 2)
     Function equals (children 1)
      ExpressionList (children 2)
       Identifier type
       Literal \'QueryFinish\'
     Function in (children 1)
      ExpressionList (children 2)
       Identifier query_id
       Subquery (children 1)
        SelectWithUnionQuery (children 1)
         ExpressionList (children 1)
          SelectQuery (children 3)
           ExpressionList (children 1)
            Identifier query_id
           TablesInSelectQuery (children 1)
            TablesInSelectQueryElement (children 1)
             TableExpression (children 1)
              TableIdentifier system.query_log
           Function and (children 1)
            ExpressionList (children 4)
             Function equals (children 1)
              ExpressionList (children 2)
               Identifier current_database
               Function currentDatabase (children 1)
                ExpressionList
             Function equals (children 1)
              ExpressionList (children 2)
               Identifier log_comment
               Literal \'02950_parallel_replicas_used_replicas_count\'
             Function equals (children 1)
              ExpressionList (children 2)
               Identifier type
               Literal \'QueryFinish\'
             Function equals (children 1)
              ExpressionList (children 2)
               Identifier initial_query_id
               Identifier query_id
   Set
