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<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.4 $ -->
<!-- splitted from ./en/functions/fbsql.xml, last change in rev 1.1 -->
<refentry id="function.fbsql-affected-rows">
<refnamediv>
<refname>fbsql_affected_rows</refname>
<refpurpose>
Get number of affected rows in previous FrontBase operation
</refpurpose>
</refnamediv>
<refsect1>
&reftitle.description;
<methodsynopsis>
<type>int</type><methodname>fbsql_affected_rows</methodname>
<methodparam choice="opt"><type>resource</type><parameter>
link_identifier
</parameter></methodparam>
</methodsynopsis>
<para>
<function>fbsql_affected_rows</function> returns the number
of rows affected by the last INSERT, UPDATE or DELETE query
associated with <parameter>link_identifier</parameter>. If the
link identifier isn't specified, the last link opened by
<function>fbsql_connect</function> is assumed.
</para>
<note>
<para>
If you are using transactions, you need to call
<function>fbsql_affected_rows</function> after your INSERT,
UPDATE, or DELETE query, not after the commit.
</para>
</note>
<para>
If the last query was a DELETE query with no WHERE clause, all of
the records will have been deleted from the table but this
function will return zero.
</para>
<note>
<para>
When using UPDATE, FrontBase will not update columns where the
new value is the same as the old value. This creates the
possibility that <function>fbsql_affected_rows</function> may not
actually equal the number of rows matched, only the number of
rows that were literally affected by the query.
</para>
</note>
<para>
If the last query failed, this function will return -1.
</para>
<para>
See also: <function>fbsql_num_rows</function>.
</para>
</refsect1>
</refentry>
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