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So far you have learnt how to put information into your My SQL database, view the information in it and select which information you would like to view.In this part I will show you how to do the two final actions, updating your database and deleting records from it.There may be a requirement where the existing data in a My SQL table needs to be modified. This will modify any field value of any My SQL table.The following code block has a generic SQL syntax of the UPDATE command to modify the data in the My SQL table − The WHERE clause is very useful when you want to update the selected rows in a table.Last week I explained how to create a link for each record to point to your update script.By using the $id variable you output links which would pass the correct ID to the script so that it can update the database.Maria DB 10.x version is a drop-in replacement for My SQL 5.5/5.6/5.7 Please, backup all existing databases using this KB article How to backup/restore a Plesk database dump?
For Debian 8 Debian 8 basically shipped with Maria DB.
My SQL version 5.6.14 is available for download for OSX, a double click and install is available named Mac OS X ver. (Don’t worry about the 10.7 naming, Works fine in OSX 10.9 and OSX 10.8) There is no upgrade option in the installer and you are presented with the 3 installations: You need to install all the three installers.
Control/Right click the mysql-5.6…pkg to avoid the security Gate Keeper. My SQL data and files will be stored at: So if you have made any customisations to the behaviour of My SQL then these will now need to be added in the new file and make a copy to /etc so any global changes will be read in when My SQL is launched.
This makes it much more effective for an update script.
$query = "UPDATE contacts SET first = '$ud_first', last = '$ud_last', phone = '$ud_phone', mobile = '$ud_mobile', fax = '$ud_fax', email = '$ud_email', web = '$ud_web' WHERE id = '$ud_id'"; This query tells the database to update the contacts table where the ID is the same as the value stored in $ud_id (which as you can see from the form on the previous page was set as the id of the record we are updating) and to set the following fields to the specified values (which were set using the form on the previous page).
But as often, there's much more to this than meets the eye, so I hope you will follow along to learn more.