Home >> FAQs/Tutorials >> Oracle Tutorials

Oracle Tutorials - Error: Exact Fetch Returns More Rows

By: FYIcenter.com

(Continued from previous topic...)

Can You Assign Multiple Query Result Rows To a Variable?

You can use "SELECT ... INTO variable" to assign query results to variables. But what happens if the SELECT statements return multiple rows? The answer is that you will get a run time error. The following tutorial exercise shows this error condition:

DECLARE
  fname VARCHAR2(10);
  lname VARCHAR2(10);
BEGIN
  SELECT first_name, last_name INTO fname, lname 
    FROM employees WHERE employee_id = 100;
  DBMS_OUTPUT.PUT_LINE('Name = ' || fname || ' ' || lname);
  SELECT first_name, last_name INTO fname, lname 
    FROM employees WHERE employee_id > 100;
  DBMS_OUTPUT.PUT_LINE('Name = ' || fname || ' ' || lname);
END;
/
ORA-01422: exact fetch returns more than requested number 
  of rows
ORA-06512: at line 8
Name = Steven King

(Continued on next topic...)

  1. Can DML Statements Be Used in PL/SQL?
  2. Can DDL Statements Be Used in PL/SQL?
  3. Can Variables Be Used in SQL Statements?
  4. What Happens If Variable Names Collide with Table/Column Names?
  5. How To Resolve Name Conflicts between Variables and Columns?
  6. How To Assign Query Results to Variables?
  7. Can You Assign Multiple Query Result Rows To a Variable?
  8. How To Invoke Built-in Functions in PL/SQL?
  9. How To Retrieve the Count of Updated Rows?
  10. What Is the Implicit Cursor?
  11. How To Assign Data of the Deleted Row to Variables?
  12. What Is a RECORD in PL/SQL?
  13. How To Define a Specific RECORD Type?
  14. How To Define a Variable of a Specific RECORD Type?
  15. How To Assign Values to Data Fields in RECORD Variables?
  16. How To Retrieve Values from Data Fields in RECORD Variables?
  17. How To Define a Data Field as NOT NULL?
  18. How To Define a RECORD Variable to Store a Table Row?
  19. How To Assign a Table Row to a RECORD Variable?
  20. How To Insert a RECORD into a Table?
  21. How To Update a Table Row with a RECORD?
  22. How To Define a Variable to Match a Table Column Data Type?

Oracle Tutorials:

More...


Other Tutorials/FAQs:

More...


Related Resources:

More...


Selected Jobs:

More...