Oracle NOT pl / sql

Question

我想在做个案判决后做一个选择

即

 select x from dual  ( x is actually a variable in a report writer tool) 
 case when x = 'equipment' 
     select * from inside_sales
 else
     select * from outside_sales
 end

无法使用PL / SQL

任何帮助将不胜感激

Answer 1

我想你想要这个：

select * from inside_sales where x = 'equipment'
union all
select * from outside_sales where x <> 'equipment';

注意：如果x可以是NULL，则第二个条件稍微复杂一些。

Answer 2

像这样的东西。但是如何处理检索到的数据？

create function sales_report (is_x IN varchar2)
    return // what to return?
    is
      row_i_s  inside_sales%rowtype;
      row_o_s  ouside_sales%rowtype; 
    begin
      case is_x
      when 'equipment' 
      then
         select * 
         into row_i_s 
         from inside_sales;
      else
         select * 
         into row_o_s 
         from outside_sales;
      end;
      return // what to return?
    end;