maxdb_affected_rows
maxdb->affected_rows
Gets the number of affected rows in a previous MaxDB operation
&reftitle.description;
Procedural style:
intmaxdb_affected_rows
resourcelink
Object oriented style (property):
maxdb
intaffected_rows
maxdb_affected_rows returns the number of rows affected by the last
INSERT, UPDATE, or DELETE query associated with the provided link
parameter. If this number cannot be determined, this function will return -1.
For SELECT statements maxdb_affected_rows works like
maxdb_num_rows.
The maxdb_affected_rows function only works with queries which modify
a table. In order to return the number of rows from a SELECT query, use the
maxdb_num_rows function instead.
&reftitle.returnvalues;
An integer greater than zero indicates the number of rows affected or retrieved.
Zero indicates that no records where updated for an UPDATE statement, no rows matched
the WHERE clause in the query or that no query has yet been executed.
-1 indicates that the number of rows affected can not be determined.
&reftitle.examples;
Object oriented style
query("DROP TABLE mycustomer");
maxdb_report (MAXDB_REPORT_ERROR);
/* Insert rows */
$maxdb->query("CREATE TABLE mycustomer AS SELECT * from hotel.customer");
printf("Affected rows (INSERT): %d\n", $maxdb->affected_rows);
$maxdb->query("ALTER TABLE mycustomer ADD Status int default 0");
/* update rows */
$maxdb->query("UPDATE mycustomer SET Status=1 WHERE cno > 50");
printf("Affected rows (UPDATE): %d\n", $maxdb->affected_rows);
/* delete rows */
$maxdb->query("DELETE FROM mycustomer WHERE cno < 50");
printf("Affected rows (DELETE): %d\n", $maxdb->affected_rows);
/* select all rows */
$result = $maxdb->query("SELECT title FROM mycustomer");
printf("Affected rows (SELECT): %d\n", $maxdb->affected_rows);
$result->close();
/* Delete table Language */
$maxdb->query("DROP TABLE mycustomer");
/* close connection */
$maxdb->close();
?>
]]>
Procedural style
50");
printf("Affected rows (UPDATE): %d\n", maxdb_affected_rows($link));
/* delete rows */
maxdb_query($link, "DELETE FROM mycustomer WHERE cno < 50");
printf("Affected rows (DELETE): %d\n", maxdb_affected_rows($link));
/* select all rows */
$result = maxdb_query($link, "SELECT title FROM mycustomer");
printf("Affected rows (SELECT): %d\n", maxdb_affected_rows($link));
maxdb_free_result($result);
/* Delete table Language */
maxdb_query($link, "DROP TABLE mycustomer");
/* close connection */
maxdb_close($link);
?>
]]>
The above examples would produce the following output:
&reftitle.seealso;
maxdb_num_rows
maxdb_info