SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 1)
    Function tuple (children 1)
     ExpressionList (children 2)
      Subquery (alias time_with_microseconds) (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 1)
         SelectQuery (children 5)
          ExpressionList (children 1)
           Identifier query_start_time_microseconds
          TablesInSelectQuery (children 1)
           TablesInSelectQueryElement (children 1)
            TableExpression (children 1)
             TableIdentifier system.query_log
          Function and (children 1)
           ExpressionList (children 3)
            Function equals (children 1)
             ExpressionList (children 2)
              Identifier current_database
              Function currentDatabase (children 1)
               ExpressionList
            Function like (children 1)
             ExpressionList (children 2)
              Identifier query
              Literal \'SELECT \\\'01461_query%\'
            Function greaterOrEquals (children 1)
             ExpressionList (children 2)
              Identifier event_date
              Function yesterday (children 1)
               ExpressionList
          ExpressionList (children 1)
           OrderByElement (children 1)
            Identifier query_start_time
          Literal UInt64_1
      Subquery (alias t) (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 1)
         SelectQuery (children 5)
          ExpressionList (children 1)
           Identifier query_start_time
          TablesInSelectQuery (children 1)
           TablesInSelectQueryElement (children 1)
            TableExpression (children 1)
             TableIdentifier system.query_log
          Function and (children 1)
           ExpressionList (children 3)
            Function equals (children 1)
             ExpressionList (children 2)
              Identifier current_database
              Function currentDatabase (children 1)
               ExpressionList
            Function like (children 1)
             ExpressionList (children 2)
              Identifier query
              Literal \'SELECT \\\'01461_query%\'
            Function greaterOrEquals (children 1)
             ExpressionList (children 2)
              Identifier event_date
              Function yesterday (children 1)
               ExpressionList
          ExpressionList (children 1)
           OrderByElement (children 1)
            Identifier query_start_time
          Literal UInt64_1
   ExpressionList (children 1)
    Function if (children 1)
     ExpressionList (children 3)
      Function equals (children 1)
       ExpressionList (children 2)
        Function dateDiff (children 1)
         ExpressionList (children 3)
          Literal \'second\'
          Function toDateTime (children 1)
           ExpressionList (children 1)
            Identifier time_with_microseconds
          Function toDateTime (children 1)
           ExpressionList (children 1)
            Identifier t
        Literal UInt64_0
      Literal \'ok\'
      Literal \'fail\'
