oracle select find specific values from array true or false - sql

Question

I will try to explain this the best that I can, I have an array of products ['VALUE1','VALUE2']
my table has this data as an example
lets say the values are
product_id
order_qty
VALUE1
5
VALUE2
3
How can I build a select statement to check the table if product_id equals VALUE1 and VALUE2 but if the array contains VALUE3 it returns false else it's true I know using a function would be better.

Answer 1

This is how I understood it.
SQL> set serveroutput on;
Sample table:
SQL> select * from product;
PRODUC ORDER_QTY
------ ----------
VALUE1 5
VALUE2 3
PL/SQL code; it intersects values from the table with contents of collection. If that result is equal to number of values in collection, result is TRUE:
SQL> declare
2 l_arr sys.odcivarchar2list := sys.odcivarchar2list();
3 l_cnt number;
4 begin
5 l_arr.extend;
6 l_arr(1) := 'VALUE1';
7 l_arr.extend;
8 l_arr(2) := 'VALUE2';
9
10 select count(*)
11 into l_cnt
12 from (select product_id from product
13 intersect
14 select column_value
15 from table(l_arr)
16 );
17 dbms_output.put_line(l_cnt);
18 if l_cnt = l_arr.count then
19 dbms_output.put_line('Result is TRUE');
20 else
21 dbms_output.put_line('Result is FALSE');
22 end if;
23 end;
24 /
2
Result is TRUE
PL/SQL procedure successfully completed.
What if we add VALUE3 to collection? Result is then FALSE.
SQL> declare
2 l_arr sys.odcivarchar2list := sys.odcivarchar2list();
3 l_cnt number;
4 begin
5 l_arr.extend;
6 l_arr(1) := 'VALUE1';
7 l_arr.extend;
8 l_arr(2) := 'VALUE2';
9 l_arr.extend;
10 l_arr(3) := 'VALUE3';
11
12 select count(*)
13 into l_cnt
14 from (select product_id from product
15 intersect
16 select column_value
17 from table(l_arr)
18 );
19 if l_cnt = l_arr.count then
20 dbms_output.put_line('Result is TRUE');
21 else
22 dbms_output.put_line('Result is FALSE');
23 end if;
24 end;
25 /
Result is FALSE
PL/SQL procedure successfully completed.
SQL>

Answer 2

SELECT
CASE WHEN
COUNT(CASE WHEN PRODUCT_ID IN ('VALUE1','VALUE2') THEN 1 END) = COUNT(*)
THEN 'TRUE' ELSE 'FALSE'
END CHK
FROM T;
or you can just compare collections (NESTED TABLE):
create table t_product as
select 'VALUE1' product_id from dual union all
select 'VALUE2' product_id from dual union all
select 'VALUE3' product_id from dual;
declare
type string_table is table of t_product.product_id%type;
arr_input string_table:=string_table('VALUE1','VALUE2');
tab_data string_table;
begin
select product_id bulk collect into tab_data from t_product;
if tab_data = arr_input
then
dbms_output.put_line('yes');
else
dbms_output.put_line('no');
end if;
end;
/
Or:
select
case
when sys.ku$_vcnt('VALUE1','VALUE2') = X
then 'true'
else 'false'
end chk
from (select cast(collect(cast(product_id as varchar2(4000))) as sys.ku$_vcnt) x from t_product);
NB: it's better to create and use own type instead of sys.ku$_vcnt, for example:
create or replace type varchar2_table as table of varchar2(4000);