Updating a field in mysql

Posted by / 28-Sep-2020 23:59

the UPDATE statement is especially useful when you want to change many records or when the records that you want to change are in multiple tables. $description = mysql_escape_string($_POST['description']); // Update Database put the variables in a query $query = "UPDATE membership SET description='$description' WHERE username='$username'"; $result = mysql_query($query); if ($result) $description = mysql_escape_string($_POST['description']); $username = mysql_escape_string($_POST['username']); // Update Database put the variables in a query $query = "UPDATE membership SET description='$description' WHERE username='$username'"; $result = mysql_query($query); if($result) Double check the names of the username and description fields I have listed on the first 2 lines to make sure they match with your form. Make sure your textareas all have the name="" attribute. if you echo your $_POST['description'] do you see the data or is it empty? mysql_real_escape_string is the newer version of mysql_escape_string. Dates outside the range April 13, 1810 and September 16, 1989 exceed the size of an Integer field.To accommodate all possible dates, set the Field Size property of your Number field to Long Integer or greater.The process of updating data from one table to another follows these broad steps: The steps in this section assume the use of two similar tables.

When you need to update data from one table to another, consider the following rule: the data types for the source and destination fields must either match or be compatible.

By selecting data first, you can verify that you’re updating the records you want before you actually change any data.

Tip: Back up your database before you run an update query.

To use SQL view, create a blank, new query, and then switch the SQL view.

This section presents the syntax for and an example of an UPDATE statement.

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In some cases, the conversion process might delete some data.

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