IT. Expert System.

PHP

Returns the number of rows affected by an SQL statement


db2_num_rows

(PECL ibm_db2 >= 1.0.0)

db2_num_rows Returns the number of rows affected by an SQL statement

Description

int db2_num_rows ( resource $stmt )

Returns the number of rows deleted, inserted, or updated by an SQL statement.

To determine the number of rows that will be returned by a SELECT statement, issue SELECT COUNT(*) with the same predicates as your intended SELECT statement and retrieve the value.

If your application logic checks the number of rows returned by a SELECT statement and branches if the number of rows is 0, consider modifying your application to attempt to return the first row with one of db2_fetch_assoc(), db2_fetch_both(), db2_fetch_array(), or db2_fetch_row(), and branch if the fetch function returns FALSE.

Note:

If you issue a SELECT statement using a scrollable cursor, db2_num_rows() returns the number of rows returned by the SELECT statement. However, the overhead associated with scrollable cursors significantly degrades the performance of your application, so if this is the only reason you are considering using scrollable cursors, you should use a forward-only cursor and either call SELECT COUNT(*) or rely on the boolean return value of the fetch functions to achieve the equivalent functionality with much better performance.

Parameters

stmt

A valid stmt resource containing a result set.

Return Values

Returns the number of rows affected by the last SQL statement issued by the specified statement handle.



Content

Android Reference

Java basics

Java Enterprise Edition (EE)

Java Standard Edition (SE)

SQL

HTML

PHP

CSS

Java Script

MYSQL

JQUERY

VBS

REGEX

C

C++

C#

Design patterns

RFC (standard status)

RFC (proposed standard status)

RFC (draft standard status)

RFC (informational status)

RFC (experimental status)

RFC (best current practice status)

RFC (historic status)

RFC (unknown status)

IT dictionary

License.
All information of this service is derived from the free sources and is provided solely in the form of quotations. This service provides information and interfaces solely for the familiarization (not ownership) and under the "as is" condition.
Copyright 2016 © ELTASK.COM. All rights reserved.
Site is optimized for mobile devices.
Downloads: 3753 / . Delta: 0.03511 с