How to suppress records that contain zero values

Question

Dear folks,
Please take a look at my query below. This is a sample query with only 6 columns but my actual query has about 70 columns. Basically I need to be able to suppress those rows where numerical values are zeros across a row. But even if one column has a value greater than zero, I need that row. Is there any better way to do it or this is the only way to do it? I am just trying to avoid creating a big WHERE clause with all fields in there. Kind regards.
with my_table as (
Select 'A' as org, 12 as val_1, 13 as val_2, 14 as val_3, 40 as val_4, 100 as val_5 from dual
union all
Select 'b' as org, 12 as val_1, 13 as val_2, 14 as val_3, 40 as val_4, 100 as val_5 from dual
union all
Select 'c' as org, 12 as val_1, 13 as val_2, 14 as val_3, 40 as val_4, 100 as val_5 from dual
union all
Select 'A' as org, 0 as val_1, 0 as val_2, 0 as val_3, 0 as val_4, 0 as val_5 from dual)
select * from my_table
where
( val_1 != 0 And val_2 != 0 and val_3 != 0 and val_4 != 0 and val_5 != 0)

Answer 1

Hi,
dreporter wrote:
Dear folks,
Please take a look at my query below. This is a sample query with only 6 columns but my actual query has about 70 columns. Basically I need to be able to suppress those rows where numerical values are zeros across a row. But even if one column has a value greater than zero, I need that row. Is there any better way to do it or this is the only way to do it? I am just trying to avoid creating a big WHERE clause with all fields in there. Kind regards.Sorry, I don't know of any way to avoid referencing each column by name.
The fact that you want to do this hints that this is a denormalized table, designed to make coding difficult and inefficient. A better design would be:
SELECT 'A' as org, 12 as val,  1 AS col_num     FROM dual  UNION ALL
SELECT 'A',           13,            2              FROM dual  UNION ALL
SELECT 'A',        4,            3          FROM dual  UNION ALL
SELECT 'A',        40,            4          FROM dual  UNION ALL
SELECT 'A',         100,            5          FROM dual  UNION ALL
...Then you could use the MAX function to see if any of them were greater than 0, regardless of how many there were.
with my_table as (
Select 'A' as org, 12 as val_1, 13 as val_2, 14 as val_3, 40 as val_4, 100 as val_5 from dual
union all
Select 'b' as org, 12 as val_1, 13 as val_2, 14 as val_3, 40 as val_4, 100 as val_5 from dual
union all
Select 'c' as org, 12 as val_1, 13 as val_2, 14 as val_3, 40 as val_4, 100 as val_5 from dual
union all
Select 'A' as org, 0 as val_1, 0 as val_2, 0 as val_3, 0 as val_4, 0 as val_5 from dual)
select * from my_table
where
( val_1 != 0 And val_2 != 0 and val_3 != 0 and val_4 != 0 and val_5 != 0)That shows the rows where ALL 5 of the columns are not 0.
If you want the rows where AT LEAST 1 of the columns are not 0, then use OR instead of AND.
!= means not equal to 0. You said you were interested in whether the columns were greater than 0, which is >=.