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POParsing one field to fill another field in MySQL
 

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    <p>I am new to PHP/MySQL and am working my way through the basics.</p> <p>I have a MySQL database scwdb (that I moved from Access 2000 which my Windows 7 won't work with) with a table tblsplintersbowlinventory which has 2 fields: </p> <p>fields and data:</p> <pre><code>txtProductBowlCode data examples: OakSc07-001, MapleTi07-030, MapleTi07-034, BlackLimba07-002, AshSc07-017 txtProductPrimarySpecies data examples: Oak, Maple, Maple, BlackLimba, Ash </code></pre> <p>In other words, I want to record just the species in the txtProductPrimarySpecies field.</p> <p>I tried the following PHP script:</p> <pre><code> &lt;?php $con = mysql_connect("localhost","xxxxxxx","zzzzzzz"); if (!$con) { die('Could not connect: ' . mysql_error()); } mysql_select_db("scwdb", $con); $species = 'Maple'; mysql_query("UPDATE tblsplintersbowlinventory WHERE txtProductBowlCode LIKE $species SET txtProductPrimarySpecies=$species%"); echo "done"; mysql_close($con); ?&gt; </code></pre> <p>It seems to run, does not show an error and prints "done", but when I check the database I don't see any changes.</p> <p>What am I missing?</p> <p>This db has over 600 records, and I added this new txtProductPrimarySpecies field to make my searches easier while leaving the full code which has specific info on the bowl. There are several species that I need to do this to, so I plan on using a loop to run through a list of species. </p> <h1>How would I code that loop to read a list of species?</h1> <p>OK, I found the way to make this work!</p> <pre><code> &lt;?php $con = mysql_connect("localhost","xxxxxx","zzzzzzz"); if (!$con) { die('Could not connect: ' . mysql_error()); } mysql_select_db("scwdb", $con); $species = 'Maple'; $result = mysql_query("UPDATE tblsplintersbowlinventory SET txtProductPrimarySpecies = '$species' WHERE txtProductBowlCode LIKE '$species%'"); $result = mysql_query("SELECT * FROM tblsplintersbowlinventory WHERE txtProductBowlCode LIKE '$species%'"); echo "&lt;table border='1'&gt; &lt;tr&gt; &lt;th&gt;Index&lt;/th&gt; &lt;th&gt;Bowl Code&lt;/th&gt; &lt;th&gt;Species&lt;/th&gt; &lt;/tr&gt;"; while($row = mysql_fetch_array($result)) { echo "&lt;tr&gt;"; echo "&lt;td&gt;" . $row['intProductID'] . "&lt;/td&gt;"; echo "&lt;td&gt;" . $row['txtProductBowlCode'] . "&lt;/td&gt;"; echo "&lt;td&gt;" . $row['txtProductPrimarySpecies'] . "&lt;/td&gt;"; echo "&lt;/tr&gt;"; } echo "&lt;/table&gt;"; echo "done"; mysql_close($con); ?&gt; </code></pre> <p>This worked, and I manually changed the $species value and ran it for each of the species of wood in the database...since this was a one time shot it made more sense not to use a list and loop through it - I was bound to miss one or two species anyway.</p>
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    1. USStephen
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    1. COSET .. should be before WHERE .... you don't check for mysql errors - so you don't see any
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    2. COThere are quite a few errors in your code... you mixed up the order of `SET` and `WHERE` as well as your arguments for `LIKE` and `SET`, didn't put string values into single quotes for starters. Also the [mysql_*](http://news.php.net/php.internals/53799) extensions have been deprecated.
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    3. COPlease, don't use `mysql_*` functions to write new code. They are no longer maintained and the community has begun [deprecation process](http://goo.gl/q0gwD). See the [red box](http://goo.gl/OWwr2)? Instead you should learn about [prepared statements](http://goo.gl/orrj0) and use either [PDO](http://goo.gl/TD3xh) or [MySQLi](http://php.net/mysqli). If you can't decide which, [this article](http://goo.gl/YXyWL) will help you. If you pick PDO, [here is good tutorial](http://goo.gl/b2ATO). Also see [Why shouldn't I use mysql functions in PHP?](http://goo.gl/J5jAo)
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      1. USDaedalus
 

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