SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Function if (children 1)
     ExpressionList (children 3)
      Function equals (children 1)
       ExpressionList (children 2)
        Function count (children 1)
         ExpressionList
        Literal UInt64_2
      Literal \'OK\'
      Function concat (children 1)
       ExpressionList (children 2)
        Literal \'Fail: \'
        Function toString (children 1)
         ExpressionList (children 1)
          Function count (children 1)
           ExpressionList
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier system.query_thread_log
   Function and (children 1)
    ExpressionList (children 3)
     Function like (children 1)
      ExpressionList (children 2)
       Identifier query
       Literal \'select \\\'01546_log_queries_min_query_duration_ms-slow%\'
     Function equals (children 1)
      ExpressionList (children 2)
       Identifier current_database
       Function currentDatabase (children 1)
        ExpressionList
     Function greaterOrEquals (children 1)
      ExpressionList (children 2)
       Identifier event_date
       Function yesterday (children 1)
        ExpressionList
