FreeBSD Manual Pages
mysql_stmt_affected_rows(3) MariaDB Connector/C mysql_stmt_affected_rows(3)
Name
mysql_stmt_affected_rows - Returns the number of affected rows from previ-
ous executed prepared statement
Synopsis
#include <mysql.h>
my_ulonglong mysql_stmt_affected_rows(MYSQL_STMT * stmt);
Description
Returns the number of affected rows by the last prepared statement associ-
ated with mysql, if the operation was an "upsert" (INSERT, UPDATE, DELETE
or REPLACE) statement, or -1 if the last prepared statement failed.
Parameter
* stmt - a statement handle, which was previously allocated by
[mysql_stmt_init()](mysql_stmt_init().]]
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_stmt_affected_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.
See Also
* mysql_stmt_insert_id(3)
Version 3.4 mysql_stmt_affected_rows(3)
Want to link to this manual page? Use this URL:
<https://man.freebsd.org/cgi/man.cgi?query=mysql_stmt_affected_rows&sektion=3&manpath=FreeBSD+Ports+15.1.quarterly>