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POMySQL INSERT IGNORE / ON DUPLICATE KEY UPDATE not detecting duplicates
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12876104
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2012-10-13T19:12:42.150
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2012-10-13T19:25:28.190
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2012-10-13T19:25:28.190
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Body
I'm having an issue here, and after 2 hours of Googling Stackoverflow answers and testing different ideas I can't figure it out. Hopefully it's a no-brainer for someone out there. EDIT: Fixed! See solutions below. Here is my code: <pre><code>// Establish Table and vars mysql_query("CREATE TABLE IF NOT EXISTS pages(page varchar(255), content varchar(255))"); $page = 'Hello'; $content = 'This is the content.'; // Ive tried this: mysql_query("INSERT INTO pages SET page='$page' ON DUPLICATE KEY UPDATE content='$content'"); // Ive also tried: mysql_query("INSERT IGNORE INTO pages SET page='$page', content='$content'")); mysql_query("INSERT IGNORE INTO pages SET page='$page'")); // No content </code></pre> Expected result: Create one row with 'page' value of 'Hello' ('content' value of 'This is the content.'). When script is run a second time, no additional row is created, because there is already a row with 'page' value of 'Hello'. Observed Result: Every time script is run, a new row with page value of 'Hello' is created, assumedly because this is not a duplicate key. Buy why not? I have tried creating a table with an ID field that is AUTO_INCREMENT and the primary key, but I thought that was causing the problem so I simplified it. (That code was:) <pre><code>mysql_query("CREATE TABLE IF NOT EXISTS pages(id INT AUTO_INCREMENT NOT NULL, page varchar(255), content varchar(255), primary key (id))"); </code></pre> Desired Result: A new row should be inserted into the table if there is no row with a 'page' field of 'Hello.' Once this has been created, running the same script again should NOT result in a new row. Thank you! EDIT: Fixed! See solutions below. My solution: <pre><code>// Table needs a primary key to search for duplicates. mysql_query("CREATE TABLE IF NOT EXISTS pages(page varchar(255), content varchar(255), primary key (page))"); // Establish Table </code></pre>
Tags
<mysql><duplicates><ignore>
Title
MySQL INSERT IGNORE / ON DUPLICATE KEY UPDATE not detecting duplicates
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