Updating a mysql table with php

30 Dec

For more information about PHP's maximum integer values, please see the integer documentation. 75down vote I've found an answer to this problem :)by Pomyk SET @update_id := 0; UPDATE some_table SET row = 'value', id = (SELECT @update_id := id)WHERE some_other_row = 'blah' LIMIT 1; SELECT @update_id; EDIT by aefxx This technique can be further expanded to retrieve the ID of every row affected by an update statement: SET @uids := null; UPDATE footable SET foo = 'bar' WHERE fooid There's nothing inherently wrong with using auto-increment fields.

There's also nothing wrong with the main competetive idea, which is for the database to supply a primitive sequence of non-repeating identifiers, typically integers.

My SQL provides us with a very useful statement that changes the name of one or more tables.

To change one or more tables, we use the statement to rename a temporary table, but you can use the ALTER TABLE statement to rename a temporary table.

PDF (US Ltr) - 37.9Mb PDF (A4) - 38.0Mb PDF (RPM) - 37.3Mb HTML Download (TGZ) - 10.3Mb HTML Download (Zip) - 10.3Mb HTML Download (RPM) - 8.9Mb Man Pages (TGZ) - 216.8Kb Man Pages (Zip) - 329.6Kb Info (Gzip) - 3.4Mb Info (Zip) - 3.4Mb My SQL Backup and Recovery My SQL Globalization My SQL Information Schema My SQL Installation Guide My SQL and Linux/Unix My SQL and OS X My SQL Partitioning My SQL Performance Schema My SQL Replication Using the My SQL Yum Repository My SQL Restrictions and Limitations Security in My SQL My SQL and Solaris Building My SQL from Source Starting and Stopping My SQL My SQL Tutorial My SQL and Windows My SQL NDB Cluster 7.5 column definitions can specify the current timestamp for both the default and auto-update values, for one but not the other, or for neither.

Different columns can have different combinations of automatic properties.

This will use the SQL UPDATE command with the WHERE clause to update the selected data in the My SQL table tutorials_tbl.

The following example will update the tutorial_title field for a record having the tutorial_id as 3.

-php-mysql except I changed my code to have one button at the top instead of one at the end of every row, to make things easier for the users.First of all, we connect to the database and select the appropriate record.$id=$_GET['id']; $username="username"; $password="password"; $database="your_database"; mysql_connect(localhost,$username,$password); $query=" SELECT * FROM contacts WHERE id='$id'"; $result=mysql_query($query); $num=mysql_numrows($result); mysql_close(); $i=0; while ($i As you can see, this code will output a standard form, but instead of having blank boxes like on the form for inserting a new record, this one already has the current information from the database inserted into it.This is rather like which side of the road you drive on.The bigger problem is when people don't understand what they are doing with database access.