Important: be careful when executing UPDATE and DELETE statements. Return Values. Bug #92813: insert ..on duplicate key update return 0 rows affected: Submitted: 17 Oct 2018 4:54: Modified: 17 Oct 2018 9:46: Reporter: beebol ding: Email Updates: However, sometimes the mysql_affected_rows() returns 0 instead of 1; so my code continues to INSERT a new row and I end up with a duplicate. We're trying to figure out how to use that feature, and it seems that few people use it or even think about using it. If the CLIENT_FOUND_ROWS flag to mysql_real_connect() is specified when connecting to mysqld, affected rows is instead the number of rows matched by the WHERE clause. 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 with MySQL versions prior to 4.1.2. Procedural style: mixed mysqli_affected_rows ( object link). These are the top rated real world PHP examples of ibase_affected_rows extracted from open source projects. They can be executed in the same way as INSERT, with the exec() method. The mysqli_stmt_affected_rows() function returns the number of rows affected (changed, deleted, inserted) by the recently executed statement.. PHP ibase_affected_rows - 30 examples found. > >Is there an easy way to get MySQL always return the > >number of rows matched in an UPDATE? About the mysql PHP extensions, in local I've installed mysql, mysqli and mysqlnd: on the other machine I've got mysql and mysqli. Returns the number of affected rows on success, and -1 if the last query failed. It doesn't execute queries the same way a PHP or JSP script would. MySQL Database MySQL Connect MySQL Create DB MySQL Create Table MySQL Insert Data MySQL Get Last ID MySQL Insert Multiple MySQL Prepared MySQL Select Data MySQL Where MySQL Order By MySQL Delete Data MySQL Update Data MySQL Limit Data PHP XML PHP XML Parsers PHP SimpleXML Parser PHP SimpleXML - Get PHP XML Expat PHP XML DOM PHP - AJAX If the last query was invalid, this function will return -1. Above query could have been written as below by having . Return Values. Due to the fact that an UPDATE statement could affect many rows, or indeed, none at all, it is helpful to receive feedback on how many rows were affected. Syntax : The basic syntax of the Update Query is – This causes problems. The PDOStatement::rowCount() at the end of the example returns the number of rows affected by the last SQL query, just like the mysqli_affected_rows() function does. Description. update multiple rows with different values python and mysql, Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, PHP, Python, Bootstrap, Java Update multiple rows at a single time in MySQL Python. UPDATE `employee` SET `salary` = 5500 WHERE `salary` < 5500; The MySQL manual says that the update statement returns the number of affected rows. 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 with MySQL versions prior to 4.1.2. Returns the number of affected rows on success, or -1 if the last operation failed. Another frequently asked question is caused by the fact that mysql won't update the row, if new value is the same as old one. 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