Updating a row in sql using php


19-Oct-2019 16:57

When updating a Mysql table with identical values nothing's really affected so row Count will return 0. Perl below noted this is not always preferred behaviour and you can change it yourself since PHP 5.3.Just create your PDO object with fetch All()), which seems like a ridiculous waste of overhead and programming time. ON DUPLICATE KEY UPDATE statement is not an INSERT statement, row Count won't return the number or rows inserted or updated for such a statement.At the end of a transaction that makes database changes, the database makes all the changes permanent or undoes them all.

You can get the source and compile it yourself from but I prefer RPMs.

UPDATE summary_data SET current_category = (SELECT category_id FROM products WHERE products.product_id = summary_data.product_id) WHERE EXISTS (SELECT category_id FROM products WHERE products.product_id = summary_data.product_id); If you want to test your skills using the SQL UPDATE statement, try some of our practice exercises.



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