Statement returns null so that the folder exists

Hello
SQL>
  1      select count(unique(a.co_id)) from company a,cointro b,prod c,act d,co_contact e,
  2      co_location f,co_info g where a.co_id=b.co_id and a.co_id=c.co_id and a.co_id=d.co_id
  3      and a.co_id=e.co_id and a.co_id=f.co_id and a.co_id=g.co_id and
  4      (coname like upper('Aluminium') or coname like lower('Aluminium') or coname like initcap('Alu
  5      (coemail like upper('Aluminium') or coemail like lower('Aluminium') or coemail like initcap('
  6      (cointro like upper('Aluminium') or cointro like lower('Aluminium') or cointro like initcap('
  7      (prod like upper('Aluminium') or prod like lower('Aluminium') or prod like initcap('Aluminium
  8      (act like upper('Aluminium') or act like lower('Aluminium') or act like initcap('Aluminium'))
  9      (courl like upper('Aluminium') or courl like lower('Aluminium') or courl like initcap('Alumin
 10      (padd like upper('Aluminium') or padd like lower('Aluminium') or padd like initcap('Aluminium
 11      (country like upper('Aluminium') or country like lower('Aluminium') or country like initcap('
 12*     (associ like upper('Aluminium') or associ like lower('Aluminium') or associ like initcap('Alu
SQL> /

COUNT(UNIQUE(A.CO_ID))
----------------------
                     0
This "Aluminum" keyword exists in many different tables in the SQL statement mentioned above. I give an example of a column of the table of the prod prod
SQL> select count(unique(co_id)) from prod where prod='Aluminium';

COUNT(UNIQUE(CO_ID))
--------------------
                  12

SQL>
Please correct my statement

Thank you and best regards

You have no data in the tables that correspond to your selection criteria...

Can't say much more than that, it's your data.

If you post instructions insert for tables so I can tell you what is missing but I don't know your system or your data.

To get the results of your query...

You would need a registration in the company of a co_id of, say, 5
You would need a record in cointro with a co_id of 5,
You need a record of prod with a co_id of 5 AND a prod as "aluminum."

Either way, you must all these declarations of GOLD.

WHERE UPPER (prod) = 'ALUMINUM' would correspond to all.

See you soon

Ben

Don't forget to mark the answers useful or correct ;)

Tags: Database

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