FreeBSD Manual Pages
mysql_affected_rows(3) MariaDB Connector/C mysql_affected_rows(3)
Name
mysql_affected_rows - returns the number of rows affected by the last oper-
ation
Synopsis
#include <mysql.h>
my_ulonglong mysql_affected_rows(MYSQL * mysql);
Description
Returns the number of affected rows by the last operation associated with
mysql, if the operation was an "upsert" (INSERT, UPDATE, DELETE or REPLACE)
statement, or -1 if the last operation failed.
Parameters:
mysql is a connection identifier, which was previously allocated by
mysql_init(3) and connected by mysql_real_connect(3).
Notes:
* When using UPDATE, MariaDB will not update columns where the new value is
the same as the old value. This creates the possibility that mysql_af-
fected_rows may not actually equal the number of rows matched, only the
number of rows that were literally affected by the query.
* The REPLACE statement first deletes the record with the same primary key
and then inserts the new record. This function returns the number of
deleted records in addition to the number of inserted records.
Return value
Returns the number of affected rows or -1 on error.
See also
* mysql_num_rows(3)
Version 3.4 mysql_affected_rows(3)
Want to link to this manual page? Use this URL:
<https://man.freebsd.org/cgi/man.cgi?query=mysql_affected_rows&sektion=3&manpath=FreeBSD+Ports+15.1.quarterly>