Oracle 第三网格中 2 个交互式网格列的顶点总和

Question

I have 3 Interactive grids in my Apex application. The source table for all the three is same, just that the flags are different.

First grid:

    select kpi_a_pk, dept_name, to_char(kpi_a_1,'999,999,999,999'),to_char(kpi_a_2,'999,999,999,999'),to_char(kpi_a_3,'999,999,999,999') 
FROM KPI where dept_name = 'A'

Columns are numeric but need to be rendered comma separated. In processes i am converting them using to_number to save them.

Second grid:

select kpi_a_pk, dept_name, to_char(kpi_a_1,'999,999,999,999'),to_char(kpi_a_2,'999,999,999,999'),to_char(kpi_a_3,'999,999,999,999') 
from KPI where dept_name = 'B'

Third grid needs to be sum of the columns A and B:

select kpi_a_pk, dept_name, to_char(kpi_a_1,'999,999,999,999'),to_char(kpi_a_2,'999,999,999,999'),to_char(kpi_a_3,'999,999,999,999') 
from KPI where dept_name = 'C'

So its expected query would have the logic like:

KPI_A_1 =  case when dept_name = 'A' then kpi_a_1
+case when dept_name = 'B' then kpi_a_1

But when i try writing something like this in query, it returns nothing. I need to convert to number for calculation. sum up, then again use to char to separate comma.

select kpi_a_pk, dept_name, 
case when dept_name = 'A' then to_char(kpi_a_1,'999,999,999,999') else null end +
case when dept_name = 'B' then to_char(kpi_a_1,'999,999,999,999') else null end
,to_char(kpi_a_2,'999,999,999,999'),to_char(kpi_a_3,'999,999,999,999') 
from KPI where dept_name = 'C'

So if Grid for DEPT A:

Grid for DEPT B:

Then expected Grid for Dept C should be:

How can i modify the third grid query to get the values added cell by cell? In my opinion DA shouldn't be needed. I tried modifying the query but it doesn't return anything.

Answer 1

I'm not following your logic; why do you TO_CHAR those numbers? Wouldn't you rather use format mask to display them properly?

As of problem you have in the 3rd grid which doesn't display the sum:

• don't sum strings, as that's what you are doing. TO_CHAR(kpi_a_1, ...) is a string. That's as if you want to know result of av$#5 + #$fs . Sum numbers, not strings

• though, if Oracle managed to implicitly convert those values into numbers, it did that (and didn't raise an error). But, this is what might be bothering you:

   case when dept_name = 'A' then to_char(kpi_a_1,'999,999,999,999') else null end ----

  You're adding NULL if dept_name isn't 'A' . Adding NULL to anything results in null :

   SQL> select 1 + null as result from dual; RESULT ---------- SQL>

  Maybe you'd rather use else 0