|PL/SQL User's Guide and Reference
10g Release 1 (10.1)
Part Number B10807-01
Oracle implicitly opens a cursor to process each SQL statement not associated with an explicit cursor. In PL/SQL, you can refer to the most recent implicit cursor as the
SQL cursor, which always has the attributes
%ROWCOUNT. They provide information about the execution of data manipulation statements. The
SQL cursor has additional attributes,
%BULK_EXCEPTIONS, designed for use with the
FORALL statement. For more information, see "Querying Data with PL/SQL".
Keyword and Parameter Description
A composite attribute designed for use with the
FORALL statement. This attribute acts like an index-by table. Its ith element stores the number of rows processed by the ith execution of an
DELETE statement. If the ith execution affects no rows,
%BULK_ROWCOUNT(i) returns zero.
An associative array that stores information about any exceptions encountered by a
FORALL statement that uses the
SAVE EXCEPTIONS clause. You must loop through its elements to determine where the exceptions occurred and what they were. For each index value
i between 1 and
SQL%BULK_EXCEPTIONS(i).ERROR_INDEX specifies which iteration of the
FORALL loop caused an exception.
SQL%BULK_EXCEPTIONS(i).ERROR_CODE specifies the Oracle error code that corresponds to the exception.
TRUE if an
DELETE statement affected one or more rows or a
INTO statement returned one or more rows. Otherwise, it returns
FALSE, because Oracle closes the
SQL cursor automatically after executing its associated SQL statement.
The logical opposite of
%FOUND. It returns
TRUE if an
DELETE statement affected no rows, or a
INTO statement returned no rows. Otherwise, it returns
Returns the number of rows affected by an
DELETE statement, or returned by a
The name of the Oracle implicit cursor.
You can use cursor attributes in procedural statements but not in SQL statements. Before Oracle opens the
SQL cursor automatically, the implicit cursor attributes return
The values of cursor attributes always refer to the most recently executed SQL statement, wherever that statement appears. It might be in a different scope. If you want to save an attribute value for later use, assign it to a Boolean variable immediately.
INTO statement fails to return a row, PL/SQL raises the predefined exception
NO_DATA_FOUND, whether you check
SQL%NOTFOUND on the next line or not. A
INTO statement that calls a SQL aggregate function never raises
NO_DATA_FOUND, because those functions always return a value or a null. In such cases,
%BULK_ROWCOUNT is not maintained for bulk inserts; that would be redundant. For example, the following
FORALL statement inserts one row per iteration. After each iteration,
%BULK_ROWCOUNT returns 1:
CREATE TABLE num_table (n NUMBER); DECLARE TYPE NumList IS TABLE OF NUMBER; nums NumList := NumList(1,3,5,7,11,13,17); BEGIN FORALL i IN nums.FIRST .. nums.LAST INSERT INTO num_table (n) VALUES (nums(i)); FOR i IN nums.FIRST .. nums.LAST LOOP dbms_output.put_line('Inserted ' || SQL%BULK_ROWCOUNT(i) || ' row(s)' || ' on iteration ' || i); END LOOP; END; / DROP TABLE num_table;
You can use the scalar attributes
%ROWCOUNT with bulk binds. For example,
%ROWCOUNT returns the total number of rows processed by all executions of the SQL statement.
%NOTFOUND refer only to the last execution of the SQL statement, you can use
%BULK_ROWCOUNT to infer their values for individual executions. For example, when
%BULK_ROWCOUNT(i) is zero,
The following example inserts a new row only if an update affects no rows:
CREATE TABLE visitors (email VARCHAR2(128), pages_visited INTEGER DEFAULT 1); CREATE OR REPLACE PROCEDURE someone_visited (visitor_email visitors.email%TYPE) AS BEGIN UPDATE visitors SET pages_visited = pages_visited + 1 WHERE email = visitor_email; IF SQL%NOTFOUND THEN INSERT INTO visitors (email) VALUES (visitor_email); dbms_output.put_line('Adding ' || visitor_email || ' to the table.'); ELSE dbms_output.put_line('Incremented counter for ' || visitor_email || '.'); END IF; END; / DECLARE visitor_email visitors.email%TYPE := 'fred@fictional_domain.com'; BEGIN someone_visited(visitor_email); someone_visited(visitor_email); END; / DROP TABLE visitors; DROP PROCEDURE someone_visited;
The following example raises an exception if more than 10 rows are deleted:
CREATE TABLE temp AS SELECT object_name name FROM user_objects; DECLARE large_deletion EXCEPTION; rows_deleted NUMBER; BEGIN DELETE FROM temp WHERE name LIKE '%A%'; rows_deleted := SQL%ROWCOUNT; COMMIT; IF rows_deleted > 10 THEN RAISE large_deletion; END IF; dbms_output.put_line('Nothing unusual detected.'); EXCEPTION WHEN large_deletion THEN dbms_output.put_line('Recording deletion of ' || rows_deleted || ' rows in case of error.'); END; / DROP TABLE temp;
The following example uses
%BULK_ROWCOUNT. After the
FORALL statement completes, the program checks how many rows were updated by the third
CREATE TABLE num_table (n NUMBER); DECLARE TYPE NumList IS TABLE OF NUMBER; nums NumList := NumList(1,3,5,5,11,5,5); BEGIN FORALL i IN nums.FIRST .. nums.LAST INSERT INTO num_table (n) VALUES (nums(i)); -- All the numbers in the table will be squared. -- Some updates will affect more rows than others. FORALL j IN nums.FIRST .. nums.LAST UPDATE num_table SET n = n * n WHERE n = nums(j); FOR k IN nums.FIRST .. nums.LAST LOOP dbms_output.put_line('Update #' || k || ' affected ' || SQL%BULK_ROWCOUNT(k) || ' rows.'); END LOOP; END; / DROP TABLE num_table;