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UPDATE statement is used to modify the data in the database table

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Keywords Network programming Mysql tutorial
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Update the data in the database

UPDATE statement is used to modify data in the database table.

Syntax UPDATE table_name SET column_name = new_value WHERE column_name = some_value

Note: SQL is not case sensitive. UPDATE and update equivalent.

In order for PHP to execute the above statement, we must use mysql_query (function. This function is used to send queries and commands to the SQL connection.

example

Earlier, we created a table named "Person" in this tutorial. It looks something like this:

FirstName LastName Age Peter Griffin 35 Glenn Quagmire 33

The following example updates some data for the "Person" table:

<? php $ con = mysql_connect ("localhost", "peter", "abc123"); if ($ con) {die ('Could not connect:'. mysql_error ());} mysql_select_db ("my_db", $ mysql_query ("UPDATE Person SET Age = '36' WHERE FirstName = 'Peter' AND LastName = 'Griffin'"); mysql_close ($ con);?>

After this update, the "Person" table looks like this:

FirstName LastName Age Peter Griffin 36 Glenn Quagmire 33

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