Invalid reference to the variable 'NUMBER '.

Hi gurus

I understand that if someone helps me, I have the following code example.

Code example

SET SERVEROUTPUT ON

DECLARE

List_of_numbers_t TYPE TABLE IS NUMBER;

l_numbers list_of_numbers_t: =.

list_of_numbers_t (1,2,3);

BEGIN

DBMS_OUTPUT. Put_line (l_numbers (1).) (COUNT);

END;

Error

Error report:

ORA-06550: line 7, column 38:

PLS-00487: Invalid reference to the variable 'NUMBER '.

ORA-06550: line 7, column 3:

PL/SQL: Statement ignored

06550 00000 - "line %s, column % s:\n%s".

* Cause: Usually a PL/SQL compilation error.

* Action:

I want to check the index 1 of my collection, but I get the above error. Can someone help me to remove this error. Thank you

Concerning

Matt


Hi, Matt,

Matt. wrote:

Hi gurus

I understand that if someone helps me, I have the following code example.

Code example

SET SERVEROUTPUT ON

DECLARE

List_of_numbers_t TYPE TABLE IS NUMBER;

l_numbers list_of_numbers_t: =.

list_of_numbers_t (1,2,3);

BEGIN

DBMS_OUTPUT. Put_line (l_numbers (1).) (COUNT);

END;

Error

Error report:

ORA-06550: line 7, column 38:

PLS-00487: Invalid reference to the variable 'NUMBER '.

ORA-06550: line 7, column 3:

PL/SQL: Statement ignored

06550 00000 - "line %s, column % s:\n%s".

* Cause: Usually a PL/SQL compilation error.

* Action:

I want to check the index 1 of my collection, but I get the above error. Can someone help me to remove this error. Thank you

Concerning

Matt

The collections have some counts; scalars don't.

l_numbers is a collection, so you can see the number of items contained in it like this:

DECLARE

List_of_numbers_t TYPE TABLE IS NUMBER;

l_numbers list_of_numbers_t: =.

list_of_numbers_t (1,2,3);

BEGIN

DBMS_OUTPUT. Put_line (l_numbers. (COUNT);

END;

/

l_numbers (1) , however, is just a scalar NUMBER, you can't use COUNT on it

In other words, l_numbers (1) is the number 1, so we can not say

DBMS_OUTPUT. Put_line (l_numbers. (COUNT);

for exactly the same reason that you can't say

DBMS_OUTPUT. Put_line (1. (COUNT);

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