SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Asterisk
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier system.query_log
   Function and (children 1)
    ExpressionList (children 5)
     Function equals (children 1)
      ExpressionList (children 2)
       Function arrayElement (children 1)
        ExpressionList (children 2)
         Identifier Settings
         Literal \'max_streams_to_max_threads_ratio\'
       Literal \'10000000\'
     Function like (children 1)
      ExpressionList (children 2)
       Identifier query
       Literal \'%FROM 03403_data%\'
     Function equals (children 1)
      ExpressionList (children 2)
       Identifier type
       Literal \'QueryFinish\'
     Function greater (children 1)
      ExpressionList (children 2)
       Identifier memory_usage
       Literal UInt64_20000000
     Function equals (children 1)
      ExpressionList (children 2)
       Identifier current_database
       Function currentDatabase (children 1)
        ExpressionList
