Hi Guys,
I have a situation where I need to access the column values from rowtype variable. However, the column names are dynamic.
below is sample code:
declare
Cursor c1 is select * from emp;
Cursor c2 is select column_name from xyztable;
v_c2 c2%rowtype;
v_str varchar2
v_value varchar2(200);
begin
for rec in c1
loop
open c2;---this cursor has column names like EMPLOYEE_ID, FIRST_NAME, LAST_NAME etc.
loop
fetch c2 into v_c2;
exit when c2%notfound;
/* now lets say i want to access value of LAST_NAME from cursor c1, so I am writing below code, however it does not work as expected */
v_str:= 'rec.'|| v_c2.column_name; -- this will give me string like "rec.EMPLOYEE_ID"
v_value:=v_str;
end loop;
end loop;
end;
/
Plz help ASAP.Thanks.
Answers were Sorted based on User's Feedback
DECLARE
CURSOR C1 IS SELECT *
FROM DEPT;
CURSOR C2 IS SELECT *
FROM EMP;
v_c2 C2%ROWTYPE;
v_str VARCHAR2(30);
v_res VARCHAR2(35);
BEGIN
OPEN C2;
FOR REC IN C1
LOOP
FETCH C2 INTO v_c2;
EXIT WHEN C2%NOTFOUND;
v_str := 'REC'||v_c2.ENAME;
v_res := V_STR;
DBMS_OUTPUT.PUT_LINE('NAME'||v_c2.ENAME);
END LOOP;
CLOSE C2;
END;
Is This Answer Correct ? | 1 Yes | 0 No |
Answer / abhishek jee
So what this PL/SQL block is trying to do is post as many records from "emp" table as there are records in "dept" table, i.e., if there are 27 records in "dept" table and 107 records in "emp" table, then the output would show the first 27 records from the "emp" table, isn't that so?
Is This Answer Correct ? | 0 Yes | 0 No |
What is the difference between cross join and natural join?
What is online transaction processing (oltp)?
How do you delete data from a table?
if we give update table_name set column_name= default. what will happen?
what is the difference between mysql_fetch_array and mysql_fetch_object? : Sql dba
How to combine two stored procedures in sql?
How do I audit the sql sent to the server?
How do I count rows in sql?
oracle is compiler or interpretter,can any one tell me the answer?
What is the difference between database trigger and stored procedure?
What is rtm stands for?
What is the first action to perform a query? Suppose I have four tables and five joins and my query is getting slow day by day.