SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Function greater (children 1)
     ExpressionList (children 2)
      Function count (children 1)
       ExpressionList
      Literal UInt64_0
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier system.symbols
   Function and (children 1)
    ExpressionList (children 3)
     Function like (children 1)
      ExpressionList (children 2)
       Identifier symbol_demangled
       Literal \'%QueryMetricLog::startQuery%\'
     Function greater (children 1)
      ExpressionList (children 2)
       Identifier function_id
       Literal UInt64_0
     Function greater (children 1)
      ExpressionList (children 2)
       Function length (children 1)
        ExpressionList (children 1)
         Identifier symbol_demangled
       Literal UInt64_10
