PLS Database Error Messages

PLS-00487: Invalid reference to variable ‘string’

oracle

PLS-00487: Invalid reference to variable 'string'
Cause: A variable was referenced in a way that is inconsistent with its datatype. For example, a scalar variable might have been mistakenly referenced as a record, as follows: 

DECLARE 

CURSOR emp_cur IS SELECT empno, ename, sal FROM emp; 

emp_rec emp_cur%ROWTYPE; 

my_sal NUMBER(7,2); 

BEGIN ... total_sal := total_sal + my_sal.sal; -- invalid ...
Action: Check the spelling of the variable name. Make sure the variable was declared properly and that the declaration and reference are consistent regarding datatype.

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