Basic Oracle Concepts and Programming Question: Download Questions PDF
How To Loop through Data Rows in the Implicit Cursor?
![Oracle Database Interview Answer Oracle Database Interview Question](https://globalguideline.com/public/images/interview/12.png)
Answer:
You use the FOR ... IN ... LOOP statement to loop through data rows in the implicit cursor as the following syntax:
FOR row IN dml_statement LOOP
(statement block with row.field)
END LOOP;
Here "row" is a local RECORD type variable with fields automatically defined to match the fields in the data rows resulted from the DML statement. Here is a good tutorial exercise on loop through data rows with the implicit cursor:
BEGIN
FOR row IN (SELECT * FROM employees
WHERE manager_id = 101) LOOP
DBMS_OUTPUT.PUT_LINE('Name = ' || row.last_name);
END LOOP;
END;
/
Name = Greenberg
Name = Whalen
Name = Mavris
Name = Baer
Name = Higgins
FOR row IN dml_statement LOOP
(statement block with row.field)
END LOOP;
Here "row" is a local RECORD type variable with fields automatically defined to match the fields in the data rows resulted from the DML statement. Here is a good tutorial exercise on loop through data rows with the implicit cursor:
BEGIN
FOR row IN (SELECT * FROM employees
WHERE manager_id = 101) LOOP
DBMS_OUTPUT.PUT_LINE('Name = ' || row.last_name);
END LOOP;
END;
/
Name = Greenberg
Name = Whalen
Name = Mavris
Name = Baer
Name = Higgins
Download Oracle Database Interview Questions And Answers
PDF
Previous Question | Next Question |
How To Use Attributes of the Implicit Cursor in Oracle? | How To Define an Explicit Cursor in Oracle? |