|PL/SQL User's Guide and Reference
Part Number A89856-01
PL/SQL Language Elements, 15 of 52
DELETE statement removes entire rows of data from a specified table or view. For a full description of the
DELETE statement, see Oracle9i SQL Reference.
This is another (usually short) name for the referenced table or view and is typically used in the
This clause instructs the SQL engine to bulk-bind output collections before returning them to the PL/SQL engine. The SQL engine bulk-binds all collections referenced in the
INTO list. The corresponding columns must store scalar (not composite) values. For more information, see "Reducing Loop Overhead for Collections with Bulk Binds".
This clause lets you return values from the deleted rows, thereby eliminating the need to
SELECT the rows beforehand. You can retrieve the column values into variables and/or host variables, or into collections and/or host arrays. However, you cannot use the
RETURNING clause for remote or parallel deletes.
This is a
SELECT statement that provides a set of rows for processing. Its syntax is like that of
select_into_statement without the
INTO clause. See "SELECT INTO Statement".
This specifies a table or view, which must be accessible when you execute the
DELETE statement, and for which you must have
The operand of
TABLE is a
SELECT statement that returns a single column value, which must be a nested table. Operator
TABLE informs Oracle that the value is a collection, not a scalar value.
This clause refers to the latest row processed by the
FETCH statement associated with the cursor identified by
cursor_name. The cursor must be
UPDATE and must be open and positioned on a row. If the cursor is not open, the
OF clause causes an error.
If the cursor is open, but no rows have been fetched or the last fetch returned no rows, PL/SQL raises the predefined exception
This clause conditionally chooses rows to be deleted from the referenced table or view. Only rows that meet the search condition are deleted. If you omit the
WHERE clause, all rows in the table or view are deleted.
You can use the
OF statement after a fetch from an open cursor (this includes implicit fetches executed in a cursor
FOR loop), provided the associated query is
UPDATE. This statement deletes the current row; that is, the one just fetched.
The implicit cursor
SQL and the cursor attributes
%ROWCOUNT let you access useful information about the execution of a
The following statement deletes from the
bonus table all employees whose sales were below quota:
The following statement returns two column values from a deleted row into local variables:
DECLARE my_empno emp.empno%TYPE; my_ename emp.ename%TYPE; my_job emp.job%TYPE; BEGIN ... DELETE FROM emp WHERE empno = my_empno RETURNING ename, job INTO my_ename, my_job; END;
You can combine the
COLLECT clause with a
FORALL statement, in which case, the SQL engine bulk-binds column values incrementally. In the following example, if collection
depts has 3 elements, each of which causes 5 rows to be deleted, then collection
enums has 15 elements when the statement completes:
FORALL j IN depts.FIRST..depts.LAST DELETE FROM emp WHERE deptno = depts(j) RETURNING empno BULK COLLECT INTO enums;
The column values returned by each execution are added to the values returned previously.
FETCH Statement, SELECT Statement